882 results about "Jet (fluid)" patented technology

The invention provides a fluid-structure interaction vibration simulation and suppression method for a water-jet propeller, and belongs to the field of numerical simulation of computational fluid mechanics. The method comprises the following steps: establishing a finite element model of a water-jet propeller impeller-shafting coupling system; performing dry mode and wet mode comparative analysis on the finite element model by utilizing a finite element method, and verifying the effectiveness of the model; dividing finite element grids of a structural domain and a flow field domain; establishing a fluid-solid coupling model; on the basis of bidirectional fluid-solid coupling numerical calculation, the flow field speed and acting force are solved through CFD, the structure movement speed and displacement are updated, a flow field grid is further updated, flow numerical calculation continues to be conducted, and iteration is conducted till the simulation time ends; flow-induced vibration characteristics are analyzed through post-processing, and the vibration amplitude is restrained by adjusting the mass center position of the impeller airfoil. According to the method, the bidirectional fluid-solid coupling model of the impeller-shafting system of the water-jet propeller is constructed, structural deformation and transient flow field information are directly associated, and the hydrodynamic performance is improved.

A multi-scale coupling analysis method for a high-temperature liquid metal and jet water interaction system mainly comprises the following steps as shown in an attached drawing: 1, carrying out geometric modeling and grid division on a liquid metal pool type space, jet water and other pipeline systems, and setting a valve action sequence; 2, setting a coupling boundary, and establishing an IPC communication pipeline; 3, performing steady-state calculation, and mutually providing initial boundaries for overall initialization; 4, a system program is imported into the boundary of the two-dimensional fluid domain, the fluid state in the pipeline under the decompression heating condition is calculated, and boundary information in a result is written into the IPC pipeline; 5, the two-dimensional fluid program reads source items from the system program, thermodynamic parameter distribution of the molten pool is calculated, and boundary information is provided; and 6, judging the action condition of the component at the current moment and repeating the step 4 and the step 5 until the calculation time reaches the end moment. The method provided by the invention can simulate the whole interaction process of liquid metal and jet water and embody the influence of flash evaporation in a critical flow jet boundary and an injection pipeline on jet.

A valve system includes at least one spin chamber having an outlet drain configured to allow flow out of the spin chamber. A main spin surface of the at least one spin chamber is defined around the outlet drain. A directional jet system is in fluid communication with the at least one spin chamber. The directional jet system includes a plurality of members each is configured to move between a first position for directing a tangential flow around the drain of the at least one spin chamber and a second position for directing a radial flow toward the drain of the at least one spin chamber.

The invention discloses a jet fluid pushing type self-guiding drill bit which comprises a drill bit assembly, a drilling part, a gauge protection part and a drill body part which are sequentially connected, a blade and a drilling nozzle are arranged on the drilling part, a plurality of pushing nozzle rows are arranged on the gauge protection part at intervals in the circumferential direction, each pushing nozzle row comprises at least one pushing nozzle, and the drilling body part is provided with a plurality of pushing nozzles; a drilling fluid flow channel communicated with the drilling nozzle and the pushing nozzle is formed in the drill bit assembly; the rotary inner cylinder is arranged in the drilling fluid flow channel of the gauge protection part, an overflowing hole row is formed in the side wall of the rotary inner cylinder, and the overflowing hole row comprises at least one overflowing hole; the measurement and control assembly is arranged on the drill body part in a sealed mode, and the measurement and control assembly comprises a near-bit measurement module, a data processing module, a regulation and control module and a power module; and the regulation and control module can control the rotary inner cylinder to rotate to a target position relative to the drill bit assembly based on real-time parameters obtained by the near-bit measurement module, so that the drill bit assembly can drill and deflect in the target drilling direction under the counter-acting force of the jet flow of the jet flow liquid pushing the well wall.

The invention relates to an array type underwater propeller with high maneuverability and low energy consumption, a pump jet generating device and a flow divider jointly form a propeller front end, an intelligent fluid director forms a propeller rear end, and the pump jet generating device drives an impeller through a rotating motor to drive surrounding water flow to rotate to generate a main jet flow; an isolation structure is arranged in the flow divider and used for evenly dividing the main jet flow into multiple strands of independent sub jet flows, and all the sub jet flows form propelling power after entering the intelligent flow guider to be guided. The intelligent fluid directors are connected with the flow channels of the flow divider in a one-to-one correspondence mode and used for converting fluid flowing out of the flow divider and out of the jet flow face into effective action jet flow with the adjustable flow speed. The intelligent fluid director comprises a jet flow end regulation and control mechanism and a pressure relief end regulation and control mechanism, and the jet flow end regulation and control mechanism is used for independently regulating the flow speed of effective jet flow ejected from the fluid director; and the pressure relief end regulation and control mechanism is used for maintaining the constant flow velocity at the inlet of the fluid director by releasing part of water flow when the effective jet flow velocity is regulated.

The invention relates to an ultrasonic atomization pulse type cold air jet cooling and lubricating device and an operation process thereof. The device comprises an air compressor, a cold air generator, a gas storage tank, a pulse control valve and an ultrasonic atomization nozzle module which are sequentially connected through a gas pipeline. The ultrasonic atomizing nozzle module comprises an ultrasonic transducer, a stepped amplitude-variable rod, a waterproof cover, a sealing cover and a focusing nozzle. In the working process, the stepped amplitude-variable rod amplifies the high-frequency mechanical vibration amplitude of the ultrasonic transducer, and cutting fluid is efficiently atomized into micron-sized liquid drops through the cavitation effect and the capillary wave effect; meanwhile, the cold air generator converts high-pressure air provided by the air compressor into low-temperature gas and temporarily stores the low-temperature gas in the gas storage tank, and the low-temperature gas is released in a pulse mode through the precise pulse control valve according to the set frequency and duty ratio. The pulse low-temperature gas enters the sealing cover to be fully mixed with the atomized liquid drops, uniform gas-liquid two-phase jet flow is formed, finally, the jet flow is accelerated by the focusing nozzle to form high-speed convergent jet flow, the high-speed convergent jet flow acts on a cutting area accurately, and pulse type efficient cooling and lubricating cutting machining is achieved.

The invention relates to the technical field of jet milling, in particular to a jet milling control method for a fluidized bed jet mill. The method comprises the following steps: acquiring the scattered particle weight increment of large particles and the fine weight increment of fine particles between adjacent sampling moments; dividing into an initial increasing stage and a uniform increasing stage according to the numerical value change of the weight increment of the scattered particles at the maximum value position; in the initial increasing stage, the retention degree is determined according to the trend change of the small weight increment; the drag force degree is determined according to the numerical comparison of the fine weight increment and the granular weight increment in the initial increasing stage and the uniform increasing stage; and determining an adjustment coefficient of the jet milling pressure by combining the retention degree and the drag force degree at the current moment, and regulating and controlling the jet milling pressure at the current moment according to the adjustment coefficient. The airflow crushing pressure can be adjusted and controlled more objectively and reasonably, and the airflow crushing efficiency is effectively improved.

The invention belongs to the technical field of fluid mixing heat exchange, and particularly relates to a low-flow-resistance jet spray type liquid cooling low-temperature gas supply device and application thereof. Comprising a gas diversion system and a liquid supply system; the gas diversion system comprises a pre-cooling pipeline and a hemispherical diversion structure arranged in the pre-cooling pipeline; the precooling pipeline comprises an air inlet and an air outlet; the liquid supply system is arranged around the gas inlet end of the pre-cooling pipeline, communicates with the pre-cooling pipeline through a nozzle system arranged in the circumferential direction and is used for spraying liquid nitrogen into the pre-cooling pipeline so as to cool gas to be cooled; the hemispherical flow guide structure is arranged at the air inlet end of the pre-cooling pipeline, and the spherical face side of the hemispherical flow guide structure faces the air inlet and is used for guiding sprayed liquid nitrogen. In the working process, the temperature uniformity and the total pressure recovery coefficient are high, and the temperature distortion rate is low.

A system and method for enhancing marine vessel efficiency through integrated hull optimizations is disclosed. The system includes automated bow thruster covers that reduce hull drag and condition water flow, coupled with strategically positioned air lubrication nozzles that create and maintain an air layer under the vessel. The bow thruster covers may be configured as circular doors or parallel panels, optionally incorporating air discharge ports or working in conjunction with dedicated air jets. An intelligent control system optimizes the integrated components using real-time sensor data and computational fluid dynamic analysis. The system modulates air distribution and cover positions based on sea conditions and vessel speed, maintaining optimal efficiency during operation. External surfaces may incorporate superaerophilic structures to enhance air retention and reduce drag. The comprehensive integration of these components provides improved hydrodynamic efficiency while maintaining full bow thruster functionality when required.

The invention relates to the technical field of mixing pile machines, in particular to a two-way mixing drill bit structure for a mixing pile machine and a construction method.The two-way mixing drill bit structure comprises a sleeve body, and multiple sets of sleeve holes are formed in the outer wall of the sleeve body; a rotary shaking mechanism is arranged in the sleeve body, and an air injection blowing mechanism and a bidirectional rotating mechanism are arranged on the sleeve body; the rotary shaking mechanism comprises sliding grooves formed in the inner wall of the sleeve body and corresponding to the two sides of the sleeve hole, the inner wall of each sliding groove is slidably connected with a lifting plate, a spring is fixedly connected to the position, corresponding to the interior of the corresponding sliding groove, of one end of the outer side of each lifting plate, and each spring is fixedly connected with the corresponding sliding groove. According to the device, a lifting plate can move inwards and outwards, so that a pushing column is driven to do the same movement, soil in a sleeve hole is pushed away, the sleeve hole is prevented from being blocked by the soil, and the flowability of the sleeve hole is guaranteed.

The invention discloses a distributed jet active flow control-based rotor wind tunnel test method, which belongs to the technical field of aviation aerodynamic wind tunnel tests, and comprises the steps of rotor test bed dynamic characteristic test, manipulation matrix calibration, preposed preparation of rotor model dynamic balance and common taper adjustment, and dynamic balance and common taper adjustment. And then hovering and forward flight wind tunnel tests of distributed jet active flow control are carried out in sequence, test data are collected and processed, and the aerodynamic performance of the rotor wing under the condition that jet control exists or not is compared and analyzed. According to the invention, the industrial blank of the lack of a distributed jet active flow control rotor wind tunnel test method is filled, and key technical support is provided for theoretical research, technical optimization and engineering application of the rotor distributed jet active flow control method.

Provided herein are shaped-charges having curved walls to provide better controllable and improved liquid jet parameters. The shaped-charge comprises a container having a plurality of curved walls for containing a liquid. One or more explosive charges are immersed in the liquid and a detonator channel positioned through the container wall to controllably detonate the one or more explosive charges and from a wedge-shaped liquid jet. Multipoint initiation is achieved using a number of initiation points; a location of one or more initiation contact points with the geometrically-shaped explosive charges; and / or an initiation timing of each of the initiation contact points, including simultaneous initiation or a sequence of initiations. Also provided are related methods of forming liquid jets and attendant applications, including target disruption.

The utility model relates to the technical field of fluid mixing, and discloses a fluid mixing device which comprises a main support, a movable support, a plurality of micropore pipes, a vibration mechanism and a flow pushing mechanism, the movable support is movably connected to the main support and provided with a flow inlet structure, the micropore pipes are arranged on the movable support and communicated with the flow inlet structure, and the flow pushing mechanism is arranged on the movable support. The vibrating mechanism comprises a vibrating device which is connected with the movable support so as to drive the multiple microporous pipes to vibrate, the flow pushing mechanism comprises a liquid pump and a flow spraying structure communicated with the liquid discharging end of the liquid pump, the flow spraying structure is provided with a liquid spraying opening, and the flow pushing mechanism can drive liquid to be sprayed out from the liquid spraying opening towards the upper portions of the multiple microporous pipes through the liquid pump. According to the fluid mixing device, fluid micronization can be achieved, the fluid mixing effect is improved, the operation energy consumption is extremely low, and the production cost can be saved.

The invention discloses an annular gap jet erosion test device which comprises a water tank, a stirring device, a circulating pipeline system and a jet erosion device, and the jet erosion device comprises a jet gap formed by an inner barrel and an outer barrel, a rotating mechanism and an arc-shaped nozzle structure. The rotating mechanism drives the arc-shaped nozzle to circumferentially rotate so as to adjust the jet flow angle, and the stirring device can realize uniform mixing of sand-containing water. During a test, clear water or sand-containing liquid forms a high-speed jet flow through the annular nozzle to impact the surface of the test piece after the flow rate is controlled by the circulating water pump and the flowmeter, and the erosion fluid circulates back to the water tank through the tail water tank. The device can simulate the spiral rising jet flow working condition of the gap between the runner crown and the top cover of the water turbine, monitors the weight loss and microscopic damage of a test piece by adjusting parameters such as the flow speed, the jet flow angle, the sand content and the gap size, and systematically analyzes the erosion characteristics. The device provides experimental data support for revealing the annular gap jet erosion rule, and has the advantages of being adjustable in multiple parameters, high in simulation precision, convenient to operate and the like.

The invention discloses a rapid calculation method for flow field prediction of a compression system of a variable cycle engine, and the method comprises the steps: building a parameterized mapping model of valve opening and total pressure distribution based on a wall attachment turbulent jet theory; the fan state conversion process is dispersed into a plurality of quasi-steady-state working conditions according to the actuation angle range of a mode selection valve; constructing a total pressure distribution and recovery coefficient prediction module under each working condition by using the parameterized model; the prediction module is embedded into a fluid mechanics solver in the form of boundary conditions, numerical simulation of the state transition process is completed, and performance change data are obtained. According to the scheme, full-three-dimensional complex calculation is replaced by parameterized mapping, the efficiency and precision of variable circulating fan mode conversion performance analysis are remarkably improved, meanwhile, the calculation cost is reduced, and quick-response technical support is provided for compression system optimization design.

An apparatus for generating an ultra-high pressure fluid jet during drilling comprises a drilling motor; a housing structure connected with the drilling motor; and a drill bit assembly connected at the downstream end of the housing structure. The housing structure comprises an oscillation tool configured to transfer a pressure energy from pumped drilling fluid to a closed loop hydraulic circuit and pressurize the same therein; a pressure intensifier pump configured to increase hydraulic pressure of closed loop hydraulic fluid to an ultra-high pressure; and a pressure transfer tool configured to transfer the ultra-high pressure from the closed loop hydraulic fluid to the low-pressure drilling fluid, without any communication between the drilling fluid and closed loop hydraulic fluid and without requiring the drilling fluid to enter pressure intensifier pump. The ultra-high pressure of drilling fluid is directed to the drill bit assembly to aid drilling efficiency in drilling applications.

The invention provides a Venturi tube anti-flash-rust agent filling mechanism which comprises a Venturi jet device, the inside of the Venturi jet device is sequentially provided with a first inlet section, a first contraction section, a first throat part and a first diffusion section from left to right, the first inlet section is cylindrical, the first contraction section is gradually contracted from the tail end of the first inlet section, and the first throat part is communicated with the first diffusion section. The first throat part is the position with the smallest pipe diameter, and the first diffusion section is gradually enlarged from the tail end of the first throat part. Compared with the prior art, the device has the following beneficial effects that the independent mixing mechanism is arranged, the mixing cylinder is integrated at the joint of the venturi jet device and the venturi flow meter, and not only is the mixing impeller arranged in the cylinder, but also the baffle plates arranged at equal intervals are arranged in the cylinder. When the fluid flows through the mixing cylinder, the mixing impeller rotates under the pushing of the fluid to actively stir the flash rust preventing agent and the main fluid, and the baffle plate further changes the flow direction of the fluid to form a turbulent flow effect, so that the mixing uniformity is greatly improved.

The invention relates to the technical field of micro-nano bubbles, discloses a gas-water double-shearing micro-nano bubble generation method and equipment, and comprises the gas-water double-shearing micro-nano bubble generation equipment. Comprising a water spraying unit for generating high-speed atomized water flow, a gas-water premixing unit for premixing gas and water by adopting gas-water rotary cutting, a gas-water mixing unit for adopting rotary cutting, a gas-water double-shearing mixing unit for gas-water double shearing and a uniform stabilizing unit for stabilizing and discharging micro-nano bubbles. Based on the phenomena of self-excited oscillation, jet mixing and gas-liquid interface in fluid dynamics, by combining various mature fluid dynamics principles of cavitation effect, Venturi effect, shear breaking, impinging stream mixing and static mixing, the design of multiple gas chambers is added, especially the cavitation cavity, the annular gas chamber and the double-shear configuration, gas self-absorption is achieved, and the gas self-absorption effect is achieved. And the generation efficiency and uniformity of the bubbles are effectively improved.

The present invention relates to a multistage series microreactor and a fluid mixing method. The microreactor includes a base internally etched with a fluid passage, the base being provided with a fluid inlet and a fluid outlet which are communicated with the fluid passage, where the fluid passage includes a plurality of micro mixing tanks, a jet port is formed at an inlet of the micro mixing tank, adjacent micro mixing tanks are connected by jet port at a contraction section, and a splayed flow baffle plate and a flow splitting column which are arranged corresponding to the jet port are provided in the micro mixing tank, the flow splitting column being arranged below the splayed flow baffle plate. By means of a jet manner, a fluid to be mixed in the invention can be continuously split, compounded, stretched and crushed, thereby realizing rapid mixing and efficient, continuous reaction.

The invention provides a jet impingement cold plate structure and electronic equipment. The jet impingement cold plate structure comprises a cover plate; a fluid cavity is formed between the impacted plate and the cover plate; the pore plate is provided with at least one jet flow hole and at least one pressurizing structure, the pore plate is arranged in the fluid cavity, and the edge of the pore plate abuts against the cavity wall of the fluid cavity; wherein the cover plate is provided with a liquid medium inlet and a liquid medium outlet. Through cooperation of the jet flow holes in the pore plate and the pressurizing structure, the speed of impacting the impacted plate by the liquid medium is increased, and the heat exchange capacity of the cold plate is enhanced.

A jet impingement cooling apparatus includes a target having a flat surface and a plurality of recesses recessed from the flat surface, and a jet member having a plurality of orifices aligned with the plurality of recesses, respectively, wherein a cooling fluid is ejected from each orifice to the plurality of recesses.

The invention relates to a staggered jet flow micro-channel heat dissipation device which comprises a cover plate layer, a manifold layer, a jet flow layer and a micro-channel layer which are stacked in sequence, a fluid inlet and a fluid outlet are formed in the cover plate layer, the manifold layer is used for shunting fluid at the fluid inlet, jet flow holes and backflow holes which are distributed in an array mode are formed in the jet flow layer, and the micro-channel layer is used for cooling the fluid at the fluid outlet. The jet flow holes and the backflow holes are distributed in a staggered mode, heat dissipation grooves are formed in the micro-channel layer, columnar pin fins distributed in an array mode are arranged in the heat dissipation grooves, pin fin micro-channels are formed, and the axial direction of the columnar pin fins is parallel to the jet flow direction of the jet flow holes. Fluid ejected out of the jet flow holes absorbs heat, boils in the pin-fin micro-channels and transversely flows, and based on staggered distribution of the jet flow holes and the backflow holes, the transversely-flowing fluid in the pin-fin micro-channels is in staggered reverse flow and flows to the fluid outlet through the backflow holes. Compared with the prior art, the temperature uniformity of a heat dissipation object is improved, generation of local hot spots is effectively restrained, and the heat exchange efficiency is greatly improved.

The invention belongs to the technical field of erosion corrosion experiment testing, and particularly discloses an erosion corrosion experiment device and method for liquid-solid two-phase flow immersion jet flow, a cooling system is designed for solving the problem that the temperature of an erosion corrosion solution is increased due to the throttling effect, the heat dissipation area of a circulating erosion system is increased through finned tubes, and the heat dissipation efficiency is improved. And the erosion corrosion solution flowing through the finned tube can transfer heat to the liquid in the heat exchange groove, so that the temperature of a fluid medium of the erosion corrosion solution in the circulating erosion system is reduced. According to the invention, the included angle between the sample and the nozzle can be changed through the angle adjusting mechanism so as to test the material damage condition under the impact of different angles and different flow velocities, so that the real-time monitoring of the electrochemical process of the liquid-solid two-phase flow damaged material is realized; the erosion corrosion damage process and mechanism of a material in a multiphase flow environment can be researched conveniently, and gas can be injected into the immersion jet tank through the gas storage bottle and the gas injection pipe so as to realize an under-pressure experiment for dissolving acid gas.

The invention relates to a jet pump (100) for conveying a suction fluid (242) in a refrigerant circuit (200) of a temperature control system using a propellant fluid (231) and utilizing the Bernoulli effect, wherein the jet pump (100) has a primary nozzle (103) for accelerating the propellant fluid, a secondary connection interface (102) for supplying the suction fluid, a mixing tube (104) downstream of the primary nozzle (103) and downstream of the secondary connection interface (102), and a diffuser (105) downstream of the mixing tube (104), wherein in an end section (140) of the mixing tube (104), which is located at an end of the mixing tube (104) furthest from the primary nozzle (103) and closer to the diffuser (105), a thrust edge (130) is provided which is configured to act in a supersonic The flow in the mixing tube (104) is intended to trigger a compression pulse in the final section (140). Furthermore, a refrigerant circuit (200) with such a jet pump (100) is proposed.

The application discloses a gas-liquid mixed delivery pump and a gas-liquid mixed delivery method, and relates to the technical field of pumps. The pump body is detachably connected to a bearing box; a bubble dispersion plate is arranged in a suction chamber; a rotating shaft penetrates through the bearing box and extends into the pump body, a mechanical seal assembly is sleeved on the rotating shaft and located in the bearing box; a premixing impeller and a centrifugal impeller are arranged at intervals along the rotating shaft and located in the pump body, the outlet of the premixing impeller is in fluid communication with the inlet of the centrifugal impeller; a side wall of the suction chamber is provided with a jet device; a diffuser is arranged between the outlet of the centrifugal impeller and the inlet of a discharge chamber; and the outlet of the discharge chamber is connected to an outlet pipeline. The two-stage crushing structure of the bubble dispersion plate and the jet device reduces the gas phase aggregation phenomenon, improves the gas-liquid mixing uniformity, and avoids the efficiency reduction of the centrifugal impeller caused by the gas phase aggregation; the diffuser can specifically inhibit the gas-liquid separation, cooperates with the premixing effect of the premixing impeller, and widens the adaptation range of the pump body to different gas rate working conditions.

The invention provides a cold spraying system and method for submicron and nano powder deposition, belongs to the technical field of cold air power spraying, and aims to solve the technical problems of poor powder fluidity, low deposition efficiency and high-temperature deformation of a metal substrate. The cold spraying system comprises a high-pressure gas generating device, a heating device and a jet spraying device which are connected in sequence, and further comprises a spraying liquid storage tank which is connected with the jet spraying device through a pipeline. Jet flow sprayed by the jet flow spraying device is deposited on the receiving device; the problem of poor flowability of submicron and nano powder is effectively solved, the phenomena of powder agglomeration and blockage are avoided, it is ensured that the powder is uniformly dispersed in suspension liquid, stable powder feeding is achieved, meanwhile, liquid nitrogen can serve as carrier gas after being gasified, the gas pressure in a spraying pipe is improved, and the powder acceleration capacity is enhanced. In addition, the vacuum not only is favorable for reducing the influence of shock waves on the deposition efficiency of the nanopowder, but also can realize the vacuum cooling effect on the substrate.

A filament mesh structure, methods of manufacture and forming the filament mesh structure, and seat assembly having the filament mesh structure. The filament mesh structure may be cut by a fluid jet, may be heated with fluid to facilitate reshaping, or both. The filament mesh structure may be provided with a foldable connecting segment that facilitates folding of the filament mesh structure.

A pool cleaner having a base is provided. The base includes one or more jet ports disposed about a bottom of the base and a fluid conduit system enclosed within the base having one or more flow paths. The pool cleaner includes an elongated connector is coupled to the base and configured to intake fluid into the fluid conduit system. A plenum coupled to the base for discharging fluid. The pool cleaner also includes a drive system having one or more drive units coupled to the base and configured to move the pool cleaner via the fluid.

The application discloses a step variable pressure type micro-channel heat dissipation structure and a high-power laser cut-off light screen, and the structure comprises a flow channel (3), a gradually widened micro-channel (4), a first step variable pressure structure (5) and a second step variable pressure structure (6). The first step variable pressure structure (5) and the second step variable pressure structure (6) comprise a plurality of step-by-step increased elliptical cylinder arrays, the number of the elliptical cylinders is step-by-step increased, the length of the short axis of the elliptical cylinder is step-by-step decreased, the fluid flow cross-sectional area is step-by-step decreased, and the flow speed is step-by-step increased to form a jet effect to accelerate the fluid, and finally the fluid enters the gradually widened micro-channel (4) at a higher flow speed to realize flow heat exchange. The step variable pressure structure with the step-by-step increased number of elliptical cylinders, the step-by-step decreased length of the short axis and the step-by-step decreased total flow cross-sectional area at the micro-channel inlet section can rapidly and gradiently increase the pressure to accelerate the fluid, and effectively solve the problems of excessive and concentrated pressure at the micro-channel inlet.

The invention discloses a magnetorheological polishing liquid supply system and method based on a jet technology, and relates to the technical field of magnetorheological polishing, the magnetorheological polishing liquid supply system comprises a liquid storage and conveying module, the liquid storage and conveying module comprises a liquid storage device, a conveying device and a pulsation attenuation module, and the magnetorheological pulsation attenuation module is provided with a magnetorheological pulsation attenuator which is connected in series between an outlet of a servo variable pump and a conveying pipeline; the spraying execution module comprises a nozzle and a position adjusting assembly; the multi-dimensional detection module comprises a visual sensor, a Coriolis flow meter and an MEMS pressure sensor; the modeling and predicting module is used for calculating pipeline resistance according to the relative position of the nozzle and the workpiece and predicting pulsation by decomposing a pump pulsation rule through Fourier transform; and the dynamic regulation and control module is used for controlling the attenuator to counteract the pulsation according to the pulsation prediction output reverse current, and regulating the displacement and the rotating speed of the pump in real time through a fuzzy PID algorithm in combination with preset target flow and pressure. The problem that in the prior art, the injection parameter control precision is limited is solved, and high-precision regulation and control are achieved.