265 results about "Liquid interface" patented technology

The invention relates to the technical field of chemical automation control, and discloses an intelligent closed-loop control system for producing p-dichlorobenzene by a biomass method, which comprises a signal acquisition module, a residence time reconstruction module, a thermal coupling analysis module, a parameter self-adaptive scheduling module and an execution control module. The rheological characteristics of raw materials are monitored by collecting the current of a stirring motor, the liquid level is dynamically increased through a retention time reconstruction module to prolong the retention time of the materials, and a liquid level periodic migration strategy is introduced to prevent scaling of a gas-liquid interface; the thermal coupling analysis module and the parameter self-adaptive scheduling module are used for calculating thermal retardation post factors, temperature control parameters are corrected in real time, the upper limit of cooling output is limited, inner wall supercooling crystallization is prevented, and the problems that the conversion rate is reduced, the heat transfer efficiency is reduced and equipment is hung on the wall due to viscosity fluctuation of biomass raw materials are effectively solved. And the self-adaptive stable control of the reaction process is realized.

The invention relates to a preparation method of a silicon single crystal rod and a silicon wafer. Comprising a melting stage, a temperature adjusting stage, a welding stage, a seeding stage, a shouldering stage, an equal-diameter stage, an ending stage and a breaking stage which are carried out in sequence, in the equal-diameter stage, the pulling speed is controlled to be within a first pulling speed range, and the solid-liquid interface temperature gradient is controlled to be within a first gradient range; wherein the range of the first pulling speed ranges from 0.5 mm / min to 1.1 mm / min; the first gradient range is 3 DEG C / cm to 5 DEG C / cm. By reducing the temperature gradient of a solid-liquid interface and lowering the crystal pulling rate, the stability of a thermal field is enhanced, and sufficient conditions are provided for the composite reaction of Sii and V, so that the impurity capturing efficiency is improved, the internal purity of the crystal is improved, and the impurities are effectively removed.

The invention provides a single crystal furnace crystal pulling ending parameter control method and system based on adaptive regulation, and the method comprises the steps: collecting production data and parameter data of an ending starting point through a distributed sensor network and a processing equipment interface, and processing the data to obtain current state data of a crystal; and performing similarity comparison on the current state data of the crystal to obtain initial process parameters of the ending stage, and deducing and predicting state expectation evolution data of the crystal in the ending process based on the current state data of the crystal and the initial process parameters. According to the method, through the synergistic effect of full-state perception, foresight deduction, risk quantification and self-adaptive regulation and control, the bubble capture risk index is stably controlled to be 0.5 or below, the stability of a solid-liquid interface in the ending stage is improved, the technological process is not affected by the experience level of operators, and the optical uniformity consistency between batches is greatly improved.

A crystal pulling method and system for fabricating a large-diameter silicon single crystal, and a silicon single crystal and a medium. The method can comprise: performing global two-dimensional simulation on a crystal pulling process, and acquiring a global temperature distribution, a velocity field distribution and an initial solid-liquid interface value during the crystal pulling process under a preset crystal pulling apparatus and a preset crystal pulling parameter; on the basis of the global temperature distribution and the velocity field distribution, determining a boundary condition, and on the basis of the boundary condition, performing local three-dimensional simulation on the crystal pulling process to determine a target solid-liquid interface value; adjusting the preset crystal pulling parameter until the initial solid-liquid interface value is equal to the target solid-liquid interface value within a threshold range, and using the adjusted preset crystal pulling parameter as a reference crystal pulling parameter; on the basis of the reference crystal pulling parameter, simulating and calculating a simulated defect during the crystal pulling process; on the basis of the simulated defect, iteratively optimizing the reference crystal pulling parameter until the simulated defect meets a preset condition, and using the optimized reference crystal pulling parameter as a target crystal pulling parameter; and fabricating a defect-free silicon single crystal.

The invention discloses an oxygen-enriched destressing crystal growth method and a crystal growth furnace, and relates to the technical field of crystal growth, and the oxygen-enriched destressing crystal growth method comprises the following steps: step 1, pre-treating a PMNT polycrystal material, and putting the pretreated PMNT polycrystal material into a crucible; 2, pre-flushing the growth furnace and creating an oxygen partial pressure environment; 3, raising the temperature in the growth furnace to melt and homogenize the PMNT polycrystal material in the crucible; step 4, the crucible moves downwards for directional solidification of the crystal, a solid-liquid interface is formed and stably moves upwards, and in the process, a dynamic regulation and control strategy is adopted in the growth furnace to control an oxygen-enriched environment to promote crystal growth, so that the crystal digests growth stress in the growth process, and formation of oxygen vacancies is inhibited; and step 5, after crystal growth is finished, gradient cooling is performed to room temperature in an oxygen-enriched environment, and a crystal ingot is obtained. Oxygen is used as a regulation and control tool, the stress problem caused by oxygen vacancy is physically solved, the color center and performance problems caused by oxygen vacancy are chemically solved, and the crystal growth quality is improved.

The invention provides a thermal response hydrogel construction method based on solid-liquid interface repulsive force and water content, which comprises the following steps: establishing a coarse graining model of a thermal response polymer network and a water molecule system, and constructing a three-dimensional polymer gel network by adjusting the number of polymer chain monomers and the proportion of a cross-linking agent; constructing a simulation box according to the network geometric dimension and filling the simulation box with water beads; defining interaction parameters among beads under the dissipative particle dynamics model, performing molecular dynamics simulation, counting the mass center of a polymer skeleton and the number of water beads adjacent to an interface, and calculating the equilibrium moisture content; establishing a solid-liquid interface model, and calculating an equilibrium distance and interaction energy between a water bead plane and a polymer skeleton plane at the adsorption temperature; the network polymerization degree is optimized by adjusting the number of polymer chain monomers, and the optimal design of the thermal response desorption performance is achieved. The method provided by the invention is suitable for macroscopic hydrogel structure evaluation, can quickly obtain equilibrium moisture content and interfacial interaction energy, and guides reasonable proportioning and preparation of the hydrogel.

The present invention discloses a bionic regulation method for a number of bounces of a droplet on a metal surface based on acoustic in-situ monitoring, which comprises the following steps: obtaining dynamic contact characteristics and acoustic properties of a solid-liquid interface of metal superhydrophobic surfaces with different surface information in the droplet bounce process based on an optical-acoustic synchronous in-situ testing system for droplet bounces; and obtaining a correlation among the metal superhydrophobic surface, the acoustic response and the droplet bounce behavior based on the dynamic contact characteristics and the acoustic properties of the solid-liquid interface, and machining and modifying a micro-nano structure of the metal surface by combining a coupled bionic concept according to the correlation. A scientific basis and a novel design method are provided for the bionic regulation of the number of droplet bounces over the metal surface.

The invention relates to the technical field of solid-liquid interfaces and liquid drop movement and control, in particular to a method and device for achieving left-right controllable spontaneous rotation of liquid drops based on light induction, and the method comprises the following steps that acid liquid drops containing photoacid are dropwise added to the surface of liquid metal; a light source system is adopted to irradiate liquid drops on one side of the liquid drops, the liquid drops are induced to locally release non-uniform H < + > ions, and interface chemistry is initiated to generate gradient change distribution; the light intensity generated by the light source system promotes the formation of asymmetric tension distribution on the liquid drop and liquid metal interface, and drives the liquid drop to rotate along a preset direction; and by changing the irradiation position, the liquid drops can be switched between left rotation and right rotation. According to the present invention, by using the mechanism of combining the interface Marangoni effect and the light-induced acidity regulation and control, the stable and rapid spinning behavior of the liquid drop can be represented by adjusting the position, the irradiation time and the irradiation intensity of the illumination region, and the rotation direction can be reversibly switched between the left rotation and the right rotation.

The invention discloses an indium phosphide single crystal growth dynamic thermal field control method based on AI calibration of multiple temperature zones, and relates to the technical field of semiconductor material preparation and artificial intelligence control. According to the method, a multi-temperature-zone thermal field digital twin model is constructed, multi-channel temperature data, heating power data and crystal growth image data in an indium phosphide single crystal growth furnace are collected, and real-time three-dimensional reconstruction of thermal field distribution in the furnace is carried out; with the crystal growth rate, the solid-liquid interface shape and the thermal stress distribution as optimization targets, power adjustment instructions of heaters in all temperature zones are output; an AI calibration module is introduced to correct thermophysical parameters of the digital twin model; deducing a thermal field state at a future moment, compensating a thermal hysteresis effect in advance, and realizing accurate closed-loop control of an indium phosphide single crystal growth process; according to the invention, the problem that the traditional PID control is difficult to cope with nonlinear, strong-coupling and large-lag thermal field change in large-size crystal growth is solved, and the single crystal yield and the lattice quality are remarkably improved.

This invention relates to the technical field of surface lubrication and friction measurement of machinery, and provides an apparatus and method for measuring the energy barrier at the surface solid-liquid interface of a microstructure. [Solution] The apparatus includes a micro-pump, a fixed elbow, a capillary tube, an upper contact surface, a lower contact surface, a droplet, a micro-movement stage, and a high-speed microscope camera. In this method, the micro-pump transports liquid to form a droplet between the upper and lower contact surfaces, the micro-movement stage is used to drag the lower contact surface at a constant speed to slide the droplet, and the high-speed camera monitors the deflection deformation caused by the droplet drag force of the capillary tube, calculates the dynamic drag force, and integrates the drag force-displacement curve to obtain the energy consumed by the droplet to overcome the microstructure. Finally, the solid-liquid interface energy barrier per unit area is obtained, overcoming the limitations of the conventional contact angle method, which cannot measure the dynamic interface energy barrier, and enabling direct and quantitative measurement of the surface solid-liquid interface energy of the microstructure.

The invention discloses a phase field method suitable for crystal growth under diffusion control in a molten salt system, and belongs to the field of numerical simulation of crystal growth in the molten salt system. According to the method, numerical simulation of the crystal growth process in the molten salt system is realized through the steps of geometric modeling, grid division, free energy function construction, order parameter and concentration evolution equation establishment, solution and the like. The method comprises the following steps: establishing a two-dimensional geometric model containing a crucible wall surface and a molten salt medium, and dividing grids; constructing a system free energy density functional; establishing a sequence parameter and concentration parameter evolution equation; and finally, calculating a phase field parameter and a physical property parameter of the single crystal material, and substituting the parameters into the equation for iterative solution to obtain a convergence solution of the sequence parameter and the concentration. Compared with the prior art, the method has the advantages that a solid-liquid interface does not need to be directly tracked, the model complexity and the calculation cost are reduced, the calculation requirement can be quickly responded, and the molten salt body ion concentration distribution can be calculated; the method can be applied to monitoring and prediction of the process of growing the single crystal material by the molten salt method.

The embodiment of the application provides a kind of mineral dissolution precipitation simulation model construction method, device and equipment, it is related to oil and gas field development field, the method is by obtaining shale mineral image and dividing boundary grid, the spatial position of solid-liquid reaction interface is clear, secondly, the calculation formula of net reaction flux is determined by combining reactant property parameter and preset rate reaction rule, the consumption of hydrogen ion of unit area solid-liquid interface is quantified, the two reactions of dissolution and precipitation are distinguished by the positive and negative of net reaction flux, then the volume source term representing the hydrogen ion consumption intensity of unit grid volume is derived based on net reaction flux, then the volume source term is integrated into the preset distribution function evolution equation to obtain the simulation model, the hydrogen ion migration process and the mineral dissolution and precipitation process caused by hydrogen ion are integrated into the same simulation system to operate synchronously, eliminate the simulation deviation caused by only single simulation mineral dissolution in prior art, improve the accuracy of mineral dissolution and precipitation simulation.

The application discloses a method for regulating solidification structure of aluminum-silicon-iron alloy by gas-phase synergistic double-melt blending. CH4 gas is introduced into high-temperature aluminum-titanium alloy liquid, C-containing active particles are decomposed from the CH4 gas in the alloy melt and gas-liquid reaction occurs between the C-containing active particles and Al and Ti particles to generate intermediate phases such as Al4C3 and Ti3AlC and unstable TiC particles, and the intermediate phases react to generate thermodynamically stable TiC nanoparticles. Meanwhile, aluminum-silicon alloy melt and aluminum-iron alloy melt with significant difference in volume and temperature are blended in a controlled diffusion manner to obtain aluminum-silicon-iron melt. During the gas-liquid blending process, due to the opposite directions of solid / liquid interface advancing direction and solute diffusion direction during melt solidification, there exist non-local micro temperature and concentration fluctuations, and grain refinement is realized by controlling the solidification nucleation and diffusion growth process. The gas-liquid casting technology is a new process with multiple processes in synergistic action, and multiple processes can have a superposition effect under synergistic action, so that the synergistic refinement of aluminum-silicon-iron alloy second phase and aluminum grains is realized.

The application discloses a preparation method of a metal oxide passivation film on a gallium nitride surface; the method comprises the following steps: mixing a metal nitrate precursor solution and a hole sacrificial agent to obtain a mixed solution; placing a substrate containing a GaN layer into the mixed solution and performing photochemical deposition under ultraviolet light to obtain a metal oxide passivation film formed on the surface of the GaN layer. The preparation method uses a metal nitrate as a precursor, and under ultraviolet light, photo-generated electrons and holes of the GaN are used to initiate a redox reaction at a solid / liquid interface to form a uniform and dense metal oxide passivation film. The method is simple in process, is performed at room temperature, does not need vacuum, has small interface damage, can be used to reduce the trap state density of the GaN surface, improve the interface stability and reliability of a device, and is suitable for surface / interface passivation treatment of power electronic and ultraviolet photoelectric devices.

The present application relates to the technical fields of chemical engineering automation control, and discloses an intelligent closed-loop control system for producing p-dichlorobenzene by biomass method, which comprises a signal acquisition module, a residence time reconstruction module, a thermal coupling analysis module, a parameter self-adaptive scheduling module and an execution control module. The rheological characteristics of raw materials are monitored by acquiring the current of the stirring motor, the liquid level is dynamically increased by the residence time reconstruction module to prolong the residence time of materials, and the periodic migration strategy of the liquid level is introduced to prevent the gas-liquid interface from scaling. The thermal resistance lag factor is calculated by the thermal coupling analysis module and the parameter self-adaptive scheduling module, the temperature control parameters are corrected in real time, and the upper limit of the cooling output is limited to prevent the overcooling crystallization of the inner wall. The problems of the decrease of the conversion rate, the decrease of the heat transfer efficiency and the wall-hanging of the equipment caused by the viscosity fluctuation of the biomass raw materials are effectively solved, and the adaptive stable control of the reaction process is realized.

This invention belongs to the field of data prediction technology, and provides a method and system for predicting solidification cracks in alloy welding. The method includes: acquiring the thermophysical parameters, scanning speed, and horizontal and vertical distances from the solidification point to the welding point of the alloy to be tested; calculating the theoretical angle between the scanning speed direction and the normal to the fusion line based on the horizontal and vertical distances from the solidification point to the welding point; establishing a continuous growth limiting factor calculation model based on the thermophysical parameters, scanning speed, and theoretical angle, and determining the derivative expression model between the solid-liquid interface temperature and the square root of the solid fraction; establishing a crack sensitivity index calculation model based on the continuous growth limiting factor calculation model and the derivative expression model; converting the crack sensitivity index calculation model into a data curve, and obtaining the welding solidification crack prediction result based on the data change characteristics of the target segment in the data curve. This scheme has a simple calculation process, strong engineering applicability, and improves the accuracy of solidification crack prediction.

This invention belongs to the technical field of carbon dioxide capture methods, specifically relating to a carbon dioxide capture material and method based on porous liquid physical absorption. The carbon dioxide capture material consists of a hydrophobic solid porous material and an aqueous dispersion medium containing polyvinylpyrrolidone (PVP). The aqueous dispersion medium accounts for 90-95 wt% of the total system mass, and the solid porous material accounts for 5-10 wt%. The preparation method includes the following steps: Step 1, placing the weighed PPVP-containing aqueous dispersion medium in an open container, forming a gentle vortex through stirring, and then slowly adding the solid porous material; Step 2, dispersing in an ultrasonic water bath; Step 3, oscillating in a constant-temperature shaker; Step 4, repeating the above ultrasonic and oscillation steps. Compared with a pure water system, the third type of porous liquid system based on hydrophobic porous particles obtained by this invention can achieve better continuous carbon dioxide capture through the synergistic effect of the solid porous material and the solid-liquid interface interaction region.

The embodiment of the invention relates to a laser metal additive manufacturing method based on dynamic microwave assistance, and the method comprises the following steps: S1, determining technological parameters of laser additive manufacturing, and determining the size of a preset molten pool based on the technological parameters; s2, a laser beam is controlled to act on the metal material to form a liquid molten pool, meanwhile, a multi-stage microwave screening device is used for conducting spatial constraint and screening on microwave beams, and the acting range of the microwave beams is focused to the size matched with the preset molten pool size; s3, directionally applying the screened microwave beams to a liquid molten pool and a solid-liquid interface area; and S4, the screened microwave beams and the laser beams are controlled to move synchronously, and the laser beams are matched to conduct layer-by-layer stacking of materials so as to complete part forming. By realizing localization, special shape and dynamic regulation and control of a microwave energy field, inherent defects of laser are compensated from the perspective of a thermal field, and metallurgical defects are improved from the perspective of microdynamics. The invention further provides a laser metal additive manufacturing device based on dynamic microwave assistance.

The present disclosure provides a three-phase flow and heat transfer coupled simulation method. The method includes: initializing parameters; reconstructing a liquid-liquid interface; determining a fluid volume fraction at an (n+1)-th time; determining a boundary grid; and determining a signed distance function of a grid cell at an n-th time; determining an interface curvature of the interface grid cell; determining abrupt physical quantities at a smooth interface; determining a surface tension of the interface; determining an intermediate fluid velocity; acquiring the fluid volume fraction and the intermediate velocity in each grid cell in the computational domain; determining a particle velocity; determining a displacement of a p-th solid particle at the (n+1)-th time and a solid volume fraction in the grid cell at the (n+1)-th time; determining a final velocity of the computational domain at the (n+1)-th time; and solving a temperature and an interface heat flux density.

The invention relates to a single crystal furnace and a control method thereof. The single crystal furnace comprises a furnace body; the crucible is arranged in the furnace body; the water cooling screen is positioned above the crucible; the guide cylinder is arranged in the furnace body and surrounds the peripheral side of the water cooling screen; and the electromagnetic heating piece is arranged on the peripheral side of the water cooling screen in a surrounding mode and located on the inner side of the flow guide cylinder, the electromagnetic heating piece is further located at the end, close to the crucible, of the water cooling screen, synchronously ascends and descends along with the water cooling screen and the flow guide cylinder, and the electromagnetic heating piece is used for heating a solid-liquid interface between the silicon liquid and the crystal bar. Therefore, the electromagnetic heating element can locally heat the silicon liquid, so that a supercooling area generated on the surface of the silicon liquid due to too high pulling speed in the growth process of the czochralski silicon single crystal is eliminated, the crystal twisting phenomenon is inhibited, the uniformity and high quality of crystal growth are ensured, the yield of the crystal can be ensured, and the uniformity of a thermal field is ensured.

The invention discloses a preparation method of a lithium ion battery, which comprises the following steps: S1, respectively preparing a positive pole piece and a negative pole piece; s2, mixing a lithium salt, a lithium salt ligand and a solvent in proportion to obtain an eutectic solution; s3, sequentially laminating the positive pole piece, the separator and the negative pole piece, injecting the eutectic solution, and standing; s4, drying; and S5, formation and aging. Compared with the prior art, the problem of poor solid-liquid interface contact is relieved, and the wettability of the electrode material is improved.

The invention discloses a CFD (Computational Fluid Dynamics)-based simulation analysis method for flow and evaporation characteristics of a falling film of a microstructure vertical pipe. According to the method, a geometric model is firstly constructed, grid local encryption and independence verification are carried out, then a control equation set containing continuity, momentum, energy and component transportation is constructed, an interface phase change model based on Rankine-Hugoniot jump conditions is particularly introduced, mass and energy transfer of a gas-liquid interface is accurately calculated through a user-defined function, and the gas-liquid interface phase change control method based on the Rankine-Hugoniot jump condition is obtained. And finally analyzing the film forming characteristic, flow field distribution and evaporation performance of the liquid film through post-treatment. According to the method, the physical mechanism of the microstructure induced secondary flow and the reconstructed thermal boundary layer can be analyzed, the heat transfer enhancement effect of different microstructures can be quantitatively evaluated, and the problem that a traditional empirical formula cannot predict the microstructure enhancement mechanism is effectively solved; and a low-cost and high-efficiency virtual experiment platform is provided for the optimal design of the high-performance vertical falling film evaporator.

The application discloses a two-dimensional metal organic framework nanopore sensor and a preparation method and application thereof. The two-dimensional metal organic framework nanopore sensor comprises a two-dimensional metal organic framework film with first nanopores, a silicon nitride film with second nanopores and a silicon substrate which are sequentially stacked, the two-dimensional metal organic framework film is formed through liquid-liquid interface force self-assembly and is transferred in situ to the silicon nitride film to form. The two-dimensional nanopore film material adopted by the application is a metal organic framework of a porphyrin organic ligand, the hydrophobic porphyrin ligand has high affinity with DNA molecules and can interact with the DNA molecules, so that the speed of the DNA passing through the two-dimensional nanopore is slowed down, the problem of fast pore passing speed when the two-dimensional nanopore sensor detects and distinguishes short-chain DNA is solved, and the time resolution capability of the two-dimensional nanopore is greatly improved under the premise of guaranteeing high spatial resolution of the two-dimensional nanopore.

This invention proposes a production process for protein mesh dressings, comprising the following steps: S1, firstly, pressing out several grooves of a preset pattern using an embossing process, the groove depth being 0.3-0.5 times the thickness of the formed protein thread; modifying the surface of the embossed release paper, the modification process including first using plasma activation treatment, followed by coating the release paper surface with a hydrophobic material; S2, preparing the active material; S3, coating the active material along the groove trajectory; S4, gradient drying and curing; firstly, pre-curing the release paper coated with the active material at low temperature, and then drying and curing using a gradient temperature rise mode; S5, post-treatment; the grooves in this invention not only provide physical boundaries, but also construct directional boundary tension constraints through the sidewalls, breaking the tension balance of disordered diffusion of liquid lines; while the hydrophobic modification further optimizes the boundary tension distribution of the solid-liquid interface, weakening the spreading driving force; thus avoiding the problems of coarsening of the wire diameter and sparse mesh in existing processes.

The application discloses a single crystal growth ending method and system based on convex solid-liquid interface control and belongs to the technical field of semiconductor material preparation. The method is applied to the ending stage of Czochralski method single crystal silicon growth, the heating power, the pulling speed, the crystal rotation state and the crystal lifting state are cooperatively controlled, the solid-liquid interface is adjusted from a concave surface to a plane and a convex shape towards the melt in four steps, and the rapid ending is completed under the stable convex interface; the matching system comprises a single crystal furnace body and a heating power and a pulling parameter control module, and further comprises a state monitoring and central control module, so that the accurate cooperation and automatic control of process parameters are realized. The application fundamentally eliminates the generation conditions of dislocation back extension and hidden cracks, reduces the occurrence rate, shortens the ending time, has strong process controllability, can be upgraded on the existing equipment, and has a good industrialization and popularization prospect.

The invention relates to a method for catalytically synthesizing a large-size single crystal covalent triazine framework (CTF) by using a mercury-based quantum dot dynamic interface. According to the method, the efficient catalytic synthesis of the aromatic dinitrile monomer is realized through the dynamic action of the mercury-based quantum dots at a superacid liquid-liquid interface. The preparation method comprises the following specific steps: firstly, dispersing aromatic dinitrile monomers and oleic acid coated mercury-based quantum dots in an organic solvent to form a precursor dispersion liquid; then slowly injecting the solution into superacid to form a clear liquid-liquid two-phase interface; under the conditions of proper temperature and rotating speed, inducing the monomers to be orderly assembled and grow through active species released by the mercury-based quantum dots; and finally, cleaning and drying to obtain the large-size CTF single crystal with high crystallinity. According to the method, the soft template effect of the mercury-based quantum dots and a super-acid enhanced reversible error correction mechanism are utilized, so that the nucleation entropy change can be effectively inhibited, and the crystal quality can be improved.

The invention belongs to the technical field of liquid metal corrosion numerical simulation, and particularly relates to a liquid metal corrosion simulation method based on a near-field dynamic reaction diffusion equation. By adopting a near-field dynamics method, the problems of heterogeneity, damage and the like can be naturally simulated; the corrosion process is regarded as a chemical reaction process, the relation between a reaction term and the current density and the overpotential can be directly obtained through formula derivation, the influence of the concentration gradient on the corrosion process is relieved, and the reversible reaction can be simulated; a phase change mechanism of autonomous evolution of the interface is combined, an autonomous moving solid-liquid interface is obtained, a random mechanism of mechanical key formation and fracture is introduced into a phase change model, and random characteristics in the random mechanism are described. According to the method, the influence of some parameters or conditions on the liquid metal corrosion process can be researched while the liquid metal corrosion process can be visually and physically described, and favorable help is provided for research in the field of liquid metal corrosion.

The invention relates to the technical field of single crystal growth, and discloses an integrated process method for purifying germanium from zinc leaching residues and pulling a single crystal, which comprises the following steps: periodically executing a stable growth period and a transient disturbance period in an equal-diameter growth period, and monitoring a driving torque signal in the stable period; the disturbance period is triggered by duration or torque drift, and transient torsional shear stress is induced on the solid-liquid interface and an impurity boundary layer is damaged by controlling the rotating speed of the crystal and the rotating speed of the crucible in a coupling mode at the same time and changing the relative angular speed of the crystal and the rotating speed of the crucible at the same time. Targeted efficient removal of an impurity boundary layer is achieved, and violent disturbance to a melt body is avoided.

The application discloses a salt cave sediment gap energy storage simulation experiment system and experiment method, which comprises a salt cavity simulation system, a gas phase injection system and a liquid phase injection system. The gas phase injection system is used for injecting constant flow or constant pressure gas into the salt cavity simulation system to simulate a gas injection and halogen discharge process. The liquid phase injection system is used for injecting constant flow or constant pressure liquid into the salt cavity simulation system to simulate a halogen injection and gas discharge process. The salt cavity simulation system comprises a single-well vertical cavity simulation system and a double-well horizontal cavity simulation system. The single-well vertical cavity simulation system is used for simulating the change of a gas-liquid interface and a sediment state in a high-pressure gas injection and halogen discharge process. The double-well horizontal cavity simulation system is used for simulating the change of a gas-liquid interface and a sediment state in a low-pressure gas injection and halogen discharge process. The application solves the real-time monitoring of a halogen discharge pressure, flow and sediment migration state in a gas injection and halogen discharge process in the sediment, and fills the blank of the simulation of the gas injection and halogen discharge process in the sediment gap.

The invention provides a quercetin eutectic composition which is prepared from the following raw materials in percentage by mass: 20-35% of quercetin, 10-75% of a eutectic compound and 10-56% of a crystal inhibitor, and the total amount of all the raw materials is 100%. The co-former is nicotinamide or L-proline, and the crystal inhibitor is povidone K30 or Kollidon VA64. The preparation method comprises the following steps: adding the co-former and the crystal inhibitor into the co-former; the quercetin eutectic composition prepared by the method can effectively inhibit crystal nucleation and growth of drugs in a supersaturated solution, and improve the stability of the active drug supersaturated solution in a solid-liquid interface layer and a bulk solution; the limitation that the solubility advantage of the eutectic crystal cannot be maintained is broken through, and a new thought is provided for research of a high-solubility quercetin eutectic crystal preparation.