11 results about "Chemical potential" patented technology

The invention discloses a method for establishing a soil body freezing characteristic curve based on a thermodynamic principle. The method comprises the following steps: step 1, determining zoning characteristics of the soil body freezing characteristic curve; 2, determining an ice water chemical potential balance equation in the freezing process; 3, determining an ice water mole entropy equation and a phase change latent heat equation; 4, determining a soil mechanical equilibrium equation and a freezing temperature equation; 5, determining a capillary effect equation and a freezing temperature equation of capillary pores; and 6, determining a pore size distribution equation, and determining a soil body freezing characteristic curve. According to the thermodynamic principle and the microscopic physical structure of the soil body pores, a theoretical model capable of representing the change rule of the unfrozen water in the soil body freezing process with high precision is established, the quantitative relation among the freezing temperature, the content of the unfrozen water and the pore structure parameters is defined, the application range is wide, and the method is suitable for large-scale popularization and application. And theoretical support is provided for related research of the soil freezing process.

The application provides a mudstone non-destructive and efficient dispersion method and relates to the technical field of mudstone dispersion. The mudstone non-destructive and efficient dispersion method comprises the following steps: step 1: sample grading pretreatment: according to the mudstone cementation strength, a grading crushing strategy is implemented, wherein high cementation strength mudstone is crushed to 0.1-0.2 cm granular, low cementation strength mudstone is crushed to 0.2-0.3 cm granular; a sample with a particle size deviation of no more than 0.05 cm is screened, after the sample surface impurities are removed by using deionized water, the sample is placed in a 50-70 DEG C constant temperature environment for drying for 10-14 hours to remove free water until the constant weight. The application constructs a three-stage composite salt solution gradient from low concentration to high concentration to balanced concentration, and is supplemented with a pulse vacuum negative pressure to break the mudstone pore gas lock effect; the first stage is to build a channel by shallow wetting, the second stage is to maximize the salt loading by near-saturation concentration, and the third stage is to utilize the chemical potential gradient by concentration adjustment to drive the surface microcrystals to diffuse inward, avoid the surface crust blockage and ensure the uniform penetration of the salt solution into the mudstone.

The invention discloses an environment-friendly gas arc particle component calculation method based on a system entropy increase principle in the field of low-carbon environment-friendly power equipment, and the method comprises the steps: receiving the initial particle data of an environment-friendly gas arc system under different gas types in a variable electric field environment, and calculating the entropy S of the arc system according to the initial particle data; translational entropy components of the electrons and the heavy particles and internal entropy components of the electrons, the monatomic particles and the polyatomic particles are calculated; the differential form of the arc system entropy is obtained by assuming that the ratio of the chemical potential of particles to the temperature is irrelevant to the number density; and starting to iterate the arc particle components from the initial value until the entropy value of the arc system reaches the maximum, and obtaining the final particle component distribution. Compared with a traditional method, the method has the advantages that a predefined chemical reaction path does not need to be considered, arc particle components can be calculated more quickly, and the method is also suitable for condensed substances with phase change and wider in application range.

The invention discloses a tailing filling body damage prediction method based on a phase change theory and acoustic emission parameters, and belongs to the field of structural health monitoring, and the method comprises the following steps: firstly, obtaining component and crystal structure data of a material, and constructing a self-consistent free energy function with a clear physical image; and then, inputting a free energy function into the phase change theoretical model, calculating and comparing free energy of different phases under different components and temperatures by solving equilibrium state conditions with the chemical potential phase as the core, thereby determining the thermodynamic stable phase and the coexistence relationship thereof, and finally outputting a predicted phase diagram. The method directly starts from the basic physical parameters of the material, the dependence on a large amount of empirical data and parameter fitting is remarkably reduced, the phase equilibrium relation between a new material system and a complex multi-element system can be efficiently and reliably predicted, and an efficient calculation tool is provided for material design and development.

The invention discloses a high-density solid hydrogen storage material based on TiFe alloy doping modification and a preparation method of the high-density solid hydrogen storage material, and particularly relates to the field of solid hydrogen storage materials and hydrogen energy application. The crystal structure of the material comprises a first sub-lattice, a second sub-lattice and an interstitial site set which are mutually occupied and independent; wherein the first sub-lattice is a Ti-site sub-lattice, and the Ti-site sub-lattice takes a Ti element as a matrix and contains at least one of a first stabilizing element Zr and a second stabilizing element Al. In the preparation process, preferential solid solution of various functional elements in gemini crystal lattices and space occupation distribution of interstitial elements are regulated and controlled, migration of doped atoms in the hydrogenation cycle process and formation of segregation bands are inhibited from the double aspects of dynamics and thermodynamics, and therefore chemical potential inverse wells are eliminated, and the reversible hydrogen desorption efficiency is improved.

The invention relates to the technical field of power equipment state monitoring, and discloses a pressure correction method and device for a dissolved gas equilibrium constant, a medium and equipment.The method comprises the steps that a liquid-phase reference chemical potential and a gas-phase reference chemical potential under standard atmospheric pressure are obtained, and the liquid-phase chemical potential and the gas-phase chemical potential of dissolved gas are established in combination with preset parameters; when the liquid-phase chemical potential is equal to the gas-phase chemical potential, constructing a chemical potential balance equation; and constructing target equilibrium constants under different air pressure conditions based on the dissolution concentration and the gas phase partial pressure, determining a reference equilibrium constant under the standard atmospheric pressure, and substituting the target equilibrium constants and the reference equilibrium constant into the chemical potential equilibrium equation to obtain a correction coefficient of the target equilibrium constants relative to the reference equilibrium constant. According to the method, the calculation accuracy of the component content of the dissolved gas in the transformer oil under different air pressure environment factors is improved, and the evaluation accuracy of the running state of the transformer is improved.

The invention provides a steady-state quantum turbulence generation method and a steady-state quantum turbulence generation system capable of guaranteeing particle number conservation. The method comprises the following steps: constructing an evolution model of the quantum fluid system, wherein the evolution model is obtained by introducing an external driving item and a particle number conservation dissipation item based on a Gross-Pitaevskii equation; the external driving item is an additional external potential of spatio-temporal variation and is used for injecting energy into the system; the particle number conservation dissipation item depends on the time change rate of the particle number density and is used for dissipating the energy of the system; the external driving item and the particle number conservation dissipation item are configured to keep the total particle number conservation of the system; and performing time evolution on the quantum fluid system based on the evolution model until the system reaches a steady-state quantum turbulence state of total kinetic energy dynamic balance. According to the method, the loss of chemical potential compensation particles does not need to be adjusted, quantum turbulence structures of different scales can be stably generated and regulated, and the physical self-consistency and long-term stability of the quantum fluid evolution process are guaranteed.

The invention discloses an atomic scale-based nanometer space gas solubility calculation method, which comprises the following steps of S1, establishing a nanometer scale graphene slit hole molecular model, and implementing double-control volume giant regular Monte Carlo-pressurized volume coupling related to water molecules on two sides of a slit hole to realize rapid stabilization of pressure; s2, water molecules on the two sides complete water saturation in the slit holes under the action of the chemical potential energy difference; s3, free-state ions are added into the nanometer gaps according to the actual water type; s4, performing giant regular Monte Carlo-molecular dynamics simulation hybrid operation in the nano slit area until chemical potential balance under given temperature and pressure conditions; and S5, capturing the number of gaseous solute molecules around the water molecules by adopting a radial distribution function by taking the oxygen atoms of the single solvent water molecules as the center, and obtaining the statistical change rule of the dissolved gas molecules in the radial range of the water molecules through ensemble averaging to realize accurate evaluation of the solubility. According to the method, accurate calibration of the gas solubility in the nanometer confinement space can be determined through the atomic-scale interaction relation from the aspect of the molecular thermodynamic property, the defects of test precision and scale of an existing experimental device are overcome, and theoretical support is provided for gas storage, underground space burying and the like.

The invention provides a molecular system ground state energy value output method, a medium, a system and related equipment, and the method comprises the steps: calculating the ground state energy value and the electron number of a fragment according to a specified chemical potential value for each fragment corresponding to a molecular system; iteratively adjusting the chemical potential value by using the total electron number calculated according to the fragments and the total electron number of the molecular system to obtain a target chemical potential value and a ground state energy value of each fragment corresponding to the target chemical potential value; and calculating and outputting the ground state energy value of the molecular system based on the ground state energy value of each fragment corresponding to the target chemical potential value. According to the method, the large molecular system is divided into the small fragments for calculation, the ground state energy value of each fragment is obtained through accurate calculation, the ground state energy value of the whole molecular system can be calculated with high precision in combination with the chemical potential value subjected to iterative adjustment, and the expandability and accuracy of the calculation result are improved.

The invention belongs to the technical field of perovskite film or crystal growth, and particularly relates to a chemical potential and thermodynamic coordinated regulation method for realizing on-demand controllable preparation of a perovskite phase and a non-perovskite phase. Fixing the main stoichiometric ratio of A-site cations and B-site cations of perovskite, and regulating and controlling the composition and content of two phase components of a precursor solution at normal temperature by adjusting the content of halogen acid as a thermodynamic perturbing agent; thermodynamic induction parameters, namely temperature T and time t, are adopted to synergistically induce phase transformation; separating the obtained precipitated phase particles from the solution, and drying at low temperature to obtain a perovskite main phase pure material and a non-perovskite second phase pure material; the problems that second-phase impurities are easily mixed in the preparation process of the perovskite main phase and second-phase by-products are difficult to prepare are solved at the same time. The pure material prepared by using the two-phase conversion process can be used for manufacturing a thin film or crystal perovskite detector, so that the defect density of the device is remarkably reduced, the non-radiative recombination is inhibited, the energy band structure is optimized, and the charge transport is promoted, thereby improving the performance of the device.

This invention relates to the field of electrolyte preparation process control technology, and discloses a method for preparing low-toxicity, cyanide-free silver electroplating electrolyte based on process control. The method includes: preparing a basic electroplating solution and setting theoretical steady-state parameters for producing the optimal dense plating layer; collecting data on the current effective activity of silver ions, current pH value, and current conductivity of the solution; obtaining real-time absolute temperature and standard reference temperature to determine the equivalent conductivity; constructing a replenishment control model coupling silver ion activity deviation, pH deviation, and conductivity decay, calculating the dynamic replenishment volumetric flow rate of the regulator, and using a nonlinear amplification factor reflecting the aging degree of the plating solution to dynamically compensate for the increase in kinematic viscosity and mass transfer resistance caused by organic degradation and byproduct accumulation, enabling the system to replenish its inherent chemical potential energy consumption and solving the problem of apparent stability but inherent aging of the formulation; implementing an anti-vibration mechanism and adaptively determining the aging endpoint during the aging stage to complete the preparation of the electrolyte.