53 results about "Jet velocity" patented technology

The invention relates to the technical field of radiators, and particularly provides a jet impact micro-channel heat dissipation device for server liquid cooling, which comprises a shell, the shell comprises an upper cover plate and a lower cover plate, and the lower cover plate is attached to a chip for heat dissipation; inlets are formed in the front and back of the upper cover plate, outlets are formed in the left and right of the lower cover plate, cooling fluid enters from the inlets, flows into the drainage cavity after entering the diversion layer, enters the annular cavity from the drainage cavity, and enters the lower cover plate through a turbine diversion module of the annular cavity; the high-heat-conduction ceramic layer is arranged on the cover plate on the lower portion of the liquid inlet, the pre-rotation effect brought by the turbine flow guide module enables the jet flow speed of the liquid outlet to be distributed more evenly, the impact heat exchange efficiency of jet flow on the high-heat-conduction ceramic layer is improved on the basis that the flow resistance is remarkably reduced, and the heat exchange efficiency is improved. Moreover, the high-thermal-conductivity ceramic layer enhances the wettability of the surface and accelerates the heat dissipation of the hot spot area of the chip, and then the cooling fluid flows out from the outlet. Compared with the prior art, the heat dissipation efficiency and the energy efficiency ratio are extremely high, and the heat dissipation requirement of a high-heat-flux hot spot of a high-power server is met.

The invention belongs to the technical field of liquid metal 3D printing, and particularly relates to a melt impact jet flow regulation and control system for an open launder. A pressure heat preservation device inputs gas into the pressure heat preservation device through a gas conveying pipeline and controls the gas flow to control the pressure in the pressure heat preservation device; the molten metal in the pressure heat preservation device is sprayed to a cooling platform located under the spraying device through the spraying device to be cooled; the laser Doppler radar velocimeter monitors the metal liquid jet velocity in real time and uploads the metal liquid jet velocity to the upper computer, the gas flow needing to be adjusted is calculated through a PID algorithm, a corresponding adjusting control instruction is generated and issued to the MFC and the electromagnetic valve or the small-aperture exhaust valve and the large-aperture exhaust valve, and therefore control over the jet velocity is achieved. Through jet velocity feedback monitored in real time, the flow of gas input into the pressure heat preservation device is adjusted in real time through a PID algorithm to control the pressure in the pressure heat preservation device in real time, and therefore accurate control over the jet velocity is achieved.

This invention provides a nozzle, method, and open-face wind tunnel for improving flow field quality. The nozzle for improving flow field quality has a coaxial double-layer jet, comprising a main jet and an outer jet coaxial with and surrounding the main jet, wherein the outer jet has a lower velocity than the main jet. This invention directly alters the starting position of the shear layer of the open-face wind tunnel jet, i.e., the nozzle structure, minimizing the generation of large-scale vortex structures and effectively maintaining good flow field quality in the wind tunnel test section (downstream of the nozzle).

The invention relates to the technical field of spinning machine air injection speed balancing, in particular to a spinning machine air injection speed balancing method and system based on an oval eccentric air chamber, and the method comprises the following steps: changing a second air chamber in double air chambers into an oval air chamber, and shifting the oval air chamber towards a supply pipe by setting a centrifugal distance; calculating the gas mass flow at the inlet of the supply pipe, and further solving the pressure distribution of the first gas chamber; mapping the ellipse to a circular domain, calculating a scale coefficient, and obtaining the pressure distribution of the elliptical air chamber in combination with the pressure distribution of the first air chamber; establishing a blowhole jet velocity calculation model, and calculating the jet velocity of the spinning machine by combining the pressure distribution of the elliptical air chamber; and the optimal ellipse semi-minor axis and centrifugal distance are solved with the aim of minimizing the speed variance of the air injection holes, and the form and position of the ellipse air chamber are adjusted. Through the design of ellipse and eccentricity, the pressure difference of the positions of the air injection holes is reduced, so that the flow is balanced, the speed difference of the air injection holes is reduced, and the production requirement of high-quality spinning is met.

The application is suitable for the technical field of fluid mechanics experiment, and provides a circulating water tunnel blade impact jet velocity multi-stage regulation test device, which comprises an experimental water tunnel, a velocity multi-stage regulation mechanism, a water pump, a laser generator, a pulse laser controller, a blade angle adjusting mechanism, a high-definition CCD camera, a water tank, an image acquisition computer and a signal synchronous collector; the water tank, the water pump and the experimental water tunnel are connected through pipelines to form a circulating loop; the velocity multi-stage regulation mechanism is installed on the experimental water tunnel; the blade angle adjusting mechanism is installed on the back plate of the experimental water tunnel; the laser generator is arranged above the experimental water tunnel; the optical axis of the high-definition CCD camera is perpendicular to the pulse laser sheet light provided by the laser generator; and the image acquisition computer is signal-connected with the high-definition CCD camera through the signal synchronous collector. The device can dynamically simulate the complex actual working conditions of a hydraulic torque converter with high fidelity, and realizes the visual measurement of the blade near-wall flow field.

The invention discloses a water bucket water cutting edge characterization method based on jet flow characteristic parameters, and belongs to the technical field of water bucket type water turbines. The method comprises the steps of calculating jet velocity through a water turbine design head, and determining jet diameter by combining design flow; then, a three-dimensional coordinate system with the rotating center of the water bucket as the original point is established, the jet flow diameter is equally divided into 2n parts, and a plurality of planes are constructed; calculating the diameter of a jet flow section in each plane, and determining an initial intersection point of a water cutting edge; and connecting the intersection points in sequence through polar coordinate conversion to form a water cutting edge space curve. Compared with the prior art, the method has the advantages that the geometric parameters of the water cutting edge are directly associated with the jet characteristic parameters innovatively, the problem that a traditional mathematical fitting method breaks away from actual working conditions is solved, and the requirements of high efficiency and stable operation are comprehensively considered while the water bucket is designed.

The present invention belongs to the field of underwater navigation equipment, and specifically relates to an underwater jet generator, underwater navigation equipment, and control method thereof. The underwater jet generator includes a cavity and a vibrating diaphragm. The cavity includes a gas accommodating chamber and a liquid accommodating chamber interconnected from top to bottom. The vibrating diaphragm is disposed within the gas accommodating chamber, and vibration of the vibrating diaphragm compresses or expands the volume of the gas accommodating chamber. The cavity is provided with a jet outlet within the liquid accommodating chamber. The underwater jet generator provided by the present invention improves the jet intensity and jet velocity of the underwater jet generator while reducing energy consumption.

The invention discloses a plasma spraying intelligent closed-loop control method based on machine learning. The plasma spraying intelligent closed-loop control method comprises the steps that firstly, the jet velocity and the jet temperature under different technological parameters are collected; 2, constructing a machine learning model; 3, the jet velocity and the jet temperature are input into the machine learning model, the coating performance of the predicted spraying sample is obtained, and technological parameters are fed back and adjusted: if the predicted coating performance deviates from the application boundary by 0-9%, the technological parameters are not changed; if it is predicted that the coating performance deviates from the application boundary by 10-20%, 1-2 technological parameters which have the highest weight and have the forward influence on the coating performance are adjusted; if the predicted coating performance deviates from the application boundary by 21-39%, coordinating and adjusting 3-4 process parameters which have the highest weight and have positive influence on the coating performance; and if the predicted coating performance exceeds 39% of the application boundary, the PLC cuts off the power supply, stops powder feeding, and introduces the protective gas. The method has the characteristic of improving prediction accuracy and adaptability.

The invention discloses an additive manufacturing process optimization method and system based on jet electrochemistry, and belongs to the technical field of additive manufacturing. The method comprises the steps that the pH value, the ion concentration, the temperature and the current density of a deposition interface micro-area are obtained in real time through a micro-area sensing array integrated in a jet flow nozzle; jet velocity, pressure, electrolyte components and environment interference information are synchronously collected; constructing a uniform process state representation vector for the multi-source heterogeneous data; inputting the vector into a pre-trained multi-physical field coupling process model to realize millisecond-level prediction of the deposition rate, the morphology and the side reaction probability; a reinforcement learning controller is used for generating a self-adaptive adjustment instruction for the voltage, the jet velocity and the nozzle track; the problems that in the prior art, the deposition process is unstable, and real-time micro-area sensing and regulation lag is lacked are solved, in-situ sensing and dynamic regulation of the micron space scale and the millisecond time scale are achieved, and the compactness, the component uniformity and the forming precision of a deposition layer are remarkably improved.

The low air-fuel ratio kiln burner of the present application, the stable flame axial air jet generated by the stable flame axial air jet conveying port interacts with the radial gas jet generated by the radial gas jet conveying port, the jet velocity is slowed down and fully mixed with the gas for combustion, forming a flame stable structure with wider adaptability; the axial gas jet generated by the axial gas jet conveying port starts to contact the flame formed by the radial gas jet at a suitable position, and fully mixes the unburned gas with the already burned flame part before the outlet of the combustion chamber, realizing the full combustion of the residual oxygen in the flue gas in the furnace by the entraining capacity of the high-speed flame, thereby greatly widening the working range of the burner, allowing the burner to work normally within the air excess coefficient range of 0.4-1.5, maintaining a certain flame shape and rigidity, maintaining stable heat exchange capacity, fully utilizing the residual oxygen in the furnace, reducing energy consumption and harmful gas emission.

The invention provides a conical shaped charge liner energy-gathered warhead material density, thickness and angle optimization design method based on a BP neural network and a conical shaped charge liner energy-gathered warhead. The method comprises the steps that core components and characteristics of a conical shaped charge liner are determined, the shaped charge liner is located at the front end of a main charge, and the shaped charge liner and the main charge are coaxially arranged; the cone top of the shaped charge faces the direction away from the main charge, the conical surface makes contact with the main charge to form an energy gathering structure symmetrical to the central axis, and the detonating device is arranged in the center of the end, away from the shaped charge, of the main charge to ensure that detonation waves are symmetrically spread from the end to the shaped charge; acquiring data of jet velocity, penetration depth, jet head shape and jet tail dispersion degree under different shaped charge liner parameter combinations through a numerical simulation tool; based on the obtained data, a BP neural network model is used for optimization, the optimal parameter combination of the shaped charge liner is screened out, the jet velocity, stability and penetration depth are precisely regulated and controlled, and the requirements of different damage scenes are met.

This invention provides a method for optimizing the uniform gas distribution of an airflow distributor in a biogas-liquid reactor, belonging to the technical field of biogas-liquid reactors. It solves the problem of the lack of a systematic optimization method in existing technologies. The method includes: estimating the critical velocity for seepage at the jet orifices; calculating and initially selecting the required number of jet orifices, the total length and number of all jet pipes, and initially selecting the airflow distributor structure; determining the frictional resistance coefficient f, momentum recovery coefficient k, and jet orifice flow coefficient c; analyzing the pressure drop distribution characteristics along the pipe length and the total pressure loss within the pipe; based on the analysis results, determining the airflow distributor parameter combination that meets the conditions; and outputting the final airflow distributor design parameters when the jet velocity and non-uniformity of each jet orifice simultaneously meet the preset seepage prevention conditions and non-uniformity requirements. This invention achieves optimized design of the airflow distributor structure.

The present application relates to the field of jet propulsion technology, and provides a micro-mixing nozzle structure with staggered outlet velocity and a combustion chamber. The micro-mixing nozzle structure comprises a mounting seat and a first nozzle unit; the first nozzle unit comprises a plurality of side-by-side arranged premixing micro-pipes, among which a part is reference position premixing micro-pipes and the other part is staggered position premixing micro-pipes; along the axial direction of the premixing micro-pipe, the premixing micro-pipe has an inlet end, an outlet end and a gas passage; the inlet end is provided with an oxidant inlet, and the side wall of the premixing micro-pipe is provided with a fuel inlet communicating with the gas passage; the effective areas of the oxidant inlets corresponding to the staggered position premixing micro-pipes and the reference position premixing micro-pipes are different, so that the jet velocities of the outlet ends of the staggered position premixing micro-pipes and the reference position premixing micro-pipes are different. The present application arranges the different premixing micro-pipes in a staggered manner according to the jet velocity, realizes the staggered arrangement of the flame delay time of the different premixing micro-pipes, effectively suppresses the combustion oscillation, and can ensure the stability of the flame combustion.

The invention discloses a gas-liquid integrated jet device, and belongs to the technical field of fluid jet. The device comprises a jet flow nozzle and a compressed gas nozzle, wherein the jet flow nozzle and the compressed gas nozzle are of an interlayer structure; the jet nozzle is used for jetting high-pressure liquid jet, the compressed gas nozzle is used for jetting high-pressure gas jet, and the high-pressure gas jet speed is larger than or equal to the high-pressure liquid jet speed. By adopting a high-speed gas clamping jet flow fluid technology, the problem of speed attenuation or liquid gasification of liquid jet flow influenced by air resistance can be greatly reduced.

The invention relates to the field of electric appliances, and provides an air conditioner control method and device and an air conditioner. The method comprises the steps of obtaining position information of a user, and determining a target swing angle of a swing blade assembly according to the position information of the user; according to the position information of the user and the needed set blowing air speed, the target air supply speed of the air conditioner and the target air guide angle of an air guide plate are calculated based on the jet flow speed model and the jet flow track center line model of air supply of the air conditioner; and adjusting the air conditioner according to the target air supply speed, the target swing angle and the target air guide angle. According to the method, the jet velocity model and the jet trajectory center line model are introduced, the user position information is used for calculating the target air supply speed and the target air guide angle at the same time, and cooperative adjustment of the air speed and the air direction is achieved.

The application discloses a near-wall fixed-hybrid synthetic jet depth reinforcement learning control method and system: a plurality of jet actuators are arranged on the surface of a fixed wing, a plurality of probes are arranged in the flow field around the fixed wing and the wake area, the probes acquire flow field transient velocity and pressure data solved by a CFD flow field solver in real time, a near-end policy optimization multi-action deep reinforcement learning algorithm is adopted by a DRL control end to dynamically output continuous and discrete mixed actions according to flow field state information solved by the CFD flow field solving end, the discrete actions are used to activate a group of adjacent jet actuators, and the continuous actions are used to determine the jet velocity and flow rate of the activated jet actuators, so that the action area of the synthetic jet can be automatically aligned with the flow separation point under different attack angles, thereby reducing the average resistance and suppressing the lift fluctuation. The application can effectively reduce the resistance of the ground effect fixed wing and suppress the lift oscillation under different working conditions.

The application discloses a micro-mixing nozzle with adjustable jet velocity, a combustor and a gas turbine, and relates to the technical field of micro-mixing nozzles.The micro-mixing nozzle comprises a nozzle body comprising a plurality of micro-mixing pipes, and an adjusting assembly comprising a plurality of adjusting units, each adjusting unit comprising an adjusting body, a connecting structure and a sleeve, each sleeve being sleeved on the outside of one micro-mixing pipe, the adjusting body being arranged at the outlet of the micro-mixing pipe, the adjusting body being connected to the inside of the sleeve through the connecting structure, and a sliding groove being arranged on the micro-mixing pipe to avoid the connecting structure; wherein the cross-sectional size of each adjusting body is arranged to be different along the length direction of the micro-mixing pipe, and the position of the adjusting body can be adjusted by moving the sleeve along the micro-mixing pipe, so as to change the outlet cross-sectional area of the micro-mixing pipe through the adjusting body. The technical scheme provided by the application can adjust the jet velocity of the micro-mixing nozzle, so as to adapt to the combustion requirements of different fuels and ensure the stability and safety of combustion.

This invention relates to the field of electrical appliances, providing a control method, control device, and single-fan air conditioner. The air conditioner has an upper air outlet and a lower air outlet, both connected to a single fan. The method includes: acquiring the air conditioner's operating mode, indoor user information, and a preset target airflow velocity; calculating the target airflow velocity of the air conditioner based on a jet velocity model of the air conditioner's air supply according to the indoor user information and the target airflow velocity, and adjusting the single fan according to the target airflow velocity; adjusting the upper and lower air guide mechanisms in the upper air outlet according to the operating mode to supply air to the indoor environment; and adjusting the upper and lower air guide mechanisms in the lower air outlet according to the operating mode and the indoor user information to supply air to the indoor user. This invention assigns different functional roles to the upper and lower air outlets and dynamically adjusts them in conjunction with the user's actual state and airflow propagation laws, enabling the system to simultaneously consider the uniformity of the overall indoor thermal environment and the precise air supply needs of individual users.

The present application relates to the technical field of flow distribution disc, and particularly relates to a high-pressure flow distribution disc three-section flow groove anti-cavitation structure, which comprises a flow distribution disc, the flow distribution disc comprises two centrally-symmetrically arranged large waist-shaped grooves, small waist-shaped grooves are symmetrically arranged on the two sides of the large waist-shaped grooves, the small waist-shaped grooves are arranged through the flow distribution disc, three-section flow grooves and a second single-section flow groove are respectively arranged at the two ends of the large waist-shaped grooves, and the two three-section flow grooves are centrally symmetrically arranged; the three-section flow groove comprises three triangular grooves which are completely identical in structure, the three triangular grooves are arranged at equal intervals, and one end of a same circular-arc groove is communicated with the end portions of the three triangular grooves, and the other end of the circular-arc groove is communicated with the large waist-shaped groove. The present application can increase the flow area, reduce the jet velocity, weaken the influence of wall shear force, thereby inhibit vortex production, further inhibit cavitation phenomenon of the flow distribution disc of the axial plunger pump under high-pressure working condition, reduce flow pressure pulsation and cavitation, and improve the efficiency and service life of the axial plunger pump.

The invention relates to an ammonia-doped burner capable of adjusting ammonia incident flow, and belongs to the technical field of ammonia-doped burners, the ammonia-doped burner comprises a fuel cylinder, a primary ammonia spraying cylinder and a plurality of secondary ammonia spraying mechanisms, and the other port of the fuel cylinder is a fuel nozzle; the primary ammonia spraying cylinder sleeves the fuel cylinder in a clearance manner; the multiple secondary ammonia spraying mechanisms are distributed on the peripheral side of the primary ammonia spraying barrel at intervals in the circumferential direction of the primary ammonia spraying barrel, and multiple secondary ammonia spraying openings are formed in the peripheral side, corresponding to the primary ammonia spraying openings, of the secondary ammonia spraying mechanisms. According to the invention, the primary ammonia injection port of the primary ammonia injection cylinder is utilized to inject primary ammonia gas to the periphery of the fuel nozzle of the fuel cylinder, and then the secondary ammonia injection ports of the plurality of secondary ammonia injection mechanisms are utilized to inject secondary ammonia gas to the periphery of the fuel nozzle of the fuel cylinder; due to the fact that the secondary ammonia spraying openings of the secondary ammonia spraying mechanism sequentially swing from the axial direction of the fuel barrel to the radial direction of the fuel barrel, the jet flow speed and the jet flow angle of ammonia spraying of the secondary ammonia spraying openings can be changed, ammonia gas and fuel are fully mixed and combusted, generation of NOx is reduced, and the ecological environment is protected.

The present disclosure provides a combustor comprising: an end plate; and a plurality of nozzle units arranged on the end plate, the plurality of nozzle units being configured to be arranged in axial and / or central symmetry about a center of the end plate, each of the plurality of nozzle units having a plurality of nozzles therein, the nozzles being adapted to contain a mixture of fuel and air to form an outgoing premixed gas; wherein at least one of the plurality of nozzle units has a portion of the nozzles therein configured to have different structural features from the other nozzles to cause the premixed gas mixed by the portion of the nozzles to form an outlet jet velocity and / or a premixing uniformity of the premixed gas that is different from the other nozzles to suppress a thermoacoustic coupling of a thermoacoustic oscillation generated by the combustor.

A high-pressure mud jet erosion test system for determining the wear resistance of metallic substrates coated with Colomonoy-88 and Stellite-6, consisting of: a pressurized mixing vessel for receiving water and abrasive material, wherein the mixing vessel is sealed at the top with a watertight cap and a pressure relief valve is functionally connected at the top to regulate the internal pressure; an erosion motor connected to the bottom of the mixing container for controlling the speed of the erosion particle feed; a water supply line attached to the top of the mixing funnel to supply fresh water to maintain an optimal sludge concentration, the water supply line being connected at its other end to a water tank and a high-pressure water pump being integrated into the water supply line to transfer water from the water tank to the mixing funnel while passing through a filter in the water tank; a mixing chamber which is functionally connected to the pressurized mixing funnel as a homogeneous suspension flow channel; a test chamber unit connected to the mixing chamber, wherein the test chamber unit includes a pressure nozzle and a sample holder as an integrated assembly, the pressure nozzle being positioned to generate a high-speed suspension jet, and the sample holder being configured to fix a test specimen at a fixed distance and adjustable angle with respect to the nozzle outlet; a sludge container arranged below the test chamber for collecting the sludge consumed after sample impact, wherein a high-pressure sludge recirculation pump is connected to the sludge container via a pipeline to draw in the consumed sludge and return it to the pressurized mixing vessel, thus creating a closed circuit; and a control unit configured to allow control of the sludge jet velocity, the angle of impact on the sample, the speed of the erosion motor, the speed of the high-pressure sludge recirculation pump, the speed of the high-pressure water supply pump, and the duration of the test procedure.

The invention discloses a control method of an air curtain dust isolation system for an open channel of a dressing plant workshop, and the control method comprises the following steps: S1, controlling the airflow jet velocity of an air blowing device to be V0, s2, the flow Q blowing of the blowing device is calculated according to the airflow jet velocity V0 of the blowing device in the step S1, Q blowing meets the condition that the gas flow is controlled by controlling the gas jet velocity of the blowing device of the air curtain dust isolation system, a stable blowing and suction air curtain is effectively formed for different workshop hoisting channels of the gyratory crushing station, and the service life of the air curtain dust isolation system is prolonged. Soft sealing dust isolation on the two sides of the hoisting channel is achieved, and the functions of isolating and purifying dust in the hoisting channel are achieved.

The invention is suitable for the technical field of fluid mechanics experiments, and provides a circulating water tunnel blade impact jet velocity multi-stage regulation and control test device which comprises an experimental water tunnel, a speed multi-stage regulation and control mechanism, a water pump, a laser generator, a pulse laser controller, a blade angle adjusting mechanism, a high-definition CCD camera, a water tank, an image acquisition computer and a signal synchronous acquisition device. The water tank, the water pump and the experimental water tunnel are connected through pipelines to form a circulation loop; the speed multi-stage regulation and control mechanism is mounted on the experimental water tunnel; the blade angle adjusting mechanism is mounted on a back plate of the experimental water tunnel; the laser generator is arranged above the experimental water tunnel; the optical axis of the high-definition CCD camera is perpendicular to the pulse laser sheet light provided by the laser generator; and the image acquisition computer is in signal connection with the high-definition CCD camera through the signal synchronous acquisition device. The device can dynamically simulate the complex actual working condition of the hydraulic torque converter in a high-fidelity mode, and visual measurement of the near-wall flow field of the blade is achieved.

The application discloses a method for optimizing linear jet velocity uniform distribution of a multi-jet orifice straight pipe gas distributor, an auxiliary pipe is arranged in a main pipe, and the following optimization design variables are used: an axial interval of adjacent jet orifices of the auxiliary pipe, a jet orifice diameter of the auxiliary pipe, a jet orifice number of the auxiliary pipe, a main pipe inclination angle, an interval between a main pipe inlet end and an auxiliary pipe inlet end, and a center distance between the main pipe and the auxiliary pipe; under the constraint that an error between a main pipe inlet mass flow and a total sum of mass flows of all jet orifices is less than an error threshold, linear jet velocities at all jet orifices in the main pipe are corrected, so that the coming flow gas is subjected to pressure redistribution at all jet orifices in the main pipe, and the structure optimization design of the straight pipe gas distributor with uniform linear jet velocity distribution at all jet orifices is realized. The linear jet velocity distribution uniformity of the multi-jet orifice straight pipe gas distributor optimized by the application is significantly improved, and cell culture damage and death or leakage phenomena in a bioreactor can be reduced or basically eliminated.

This invention proposes a gas jet velocity measurement system and method based on scalar field measurement data, comprising: determining that the optical diagnostic observation area or sensor is located in the fully developed section of the jet, and then measuring the mass fraction of the light gas jet centerline and radial direction; calculating the radial density data from the measured mass fraction data; fitting the radial density × mass fraction distribution to the given centerline position using a Gaussian distribution function to obtain the jet characteristic width at that centerline position based on the jet characteristic width and the law of conservation of mass.

The application discloses a jet flow velocity maximized compressor end wall gap structure and a design method, and belongs to the field of turbomachinery; the end wall gap structure is located on the end wall of the blade root in the cascade passage, and comprises a gap inlet located on the end wall on the pressure surface side of the blade, a gap outlet located on the end wall on the suction surface side of the blade, and an airflow channel connected between the gap inlet and the gap outlet, so as to realize the local connection of the end walls on both sides of the blade root; the fluid near the pressure side end wall enters the airflow channel from the gap inlet and is ejected from the gap outlet, and the transition cooperation of the upper and lower wall surfaces of the airflow channel with the gap inlet and the gap outlet makes the jet flow of the gap adhere to the end wall and flow. The application solves the defects of the end wall active jet flow control technology, such as the need of external additional devices and the consumption of additional energy, and enriches the passive control means for the serious three-dimensional angle area separation in the blade passage of the high-load compressor.

A method and processing chamber for plenum driven hydroxyl combustion oxidation. A mixture is produced in a plenum. The mixture includes a first reactive gas injected from a first inlet and a second reactive gas injected from a second inlet. The mixture is injected towards a substrate of a processing chamber at a jet gas velocity greater than a flame gas velocity. A radical is produced as a function of the first gas and the second gas while heating the chamber.