313 results about "Air current" patented technology

The invention discloses a mountainous area wind field downscaling optimization method based on high-precision simulation, and relates to the technical field of meteorological numerical simulation, and the method comprises the steps: obtaining the terrain elevation data and meteorological monitoring data of a target mountainous area, recognizing slope abrupt change points, constructing a spiral sampling path, calculating a slope change value, determining the distance between sampling points, and generating target sampling data; performing orthogonal decomposition on the sampled data to obtain a frequency component, calculating a surface fluctuation coefficient, and constructing a boundary disturbance equation to obtain surface stress distribution; calculating an airflow motion state based on surface stress distribution, solving a vorticity equation to obtain vorticity characteristics of a leeward area, and calculating airflow motion correction parameters; and carrying out downscaling iterative operation on the corrected parameters and the meteorological monitoring data to generate target area wind field data with hectometer-magnitude spatial resolution. The simulation precision of the local wind field under the complex terrain condition is improved.

The invention provides a radar rainfall real-time estimation system based on double-method fusion and ground verification, belongs to the technical field of meteorological radar rainfall estimation, and adopts double-method fusion of a physical model estimation module and a driving model estimation module to cooperate with a causal inference fusion engine to improve the precision and adaptability of rainfall estimation and improve the rainfall estimation accuracy. The physical model module adaptively selects a Z-R, ZDR-R or KDP-R relation according to the quality of radar-based data and rainfall scenes, drives the model module to capture space-time nonlinear evolution characteristics of rainfall echoes and predicts short-time rainfall dynamics, and the causal inference engine identifies differentiated characteristics of two estimation fields, inferes hail, vertical airflow and other physical hybrid factors, and performs real-time prediction on the hail, the vertical airflow and other physical hybrid factors. A comprehensive rainfall estimation field is generated, a continuous error correction field converted from ground station observation data is corrected through a space-time error atlas network, and finally rainfall estimation information is generated for real-time rainfall estimation, so that the adaptability to a complex weather field and the precision of the estimation field are improved.

The invention discloses a design method of an array type silencer adaptive to a main ventilation air path between a stator iron core of a hydraulic generator and an air cooler and the array type silencer, and relates to the technical field of suppression or reduction of noise of the hydraulic generator. The method comprises the steps of S1, obtaining aerodynamic noise data and airflow parameters of a main ventilation air path, S2, determining a silencing thought and a micro-perforated plate array core structure according to broadband vortex, discrete rotation, vortex falling and surge noise, S3, determining the boundary dimension and preliminarily calculating the airflow parameters, S4, designing plate parameters in combination with a micro-perforated resonance formula, and S5, calculating the noise of the micro-perforated plate array. S5, performing simulation optimization and S6, accurately accounting airflow parameters, and locking a scheme meeting requirements; the silencer comprises a shell and a plurality of micro-perforated plates, and the multiple layers of micro-perforated plates are arranged in series. The invention has the advantages of no sound absorption material, low wind resistance (the air volume attenuation is less than or equal to 5%, and the pressure loss is less than or equal to 200Pa), the noise of the main wind path is reduced by 5-7dB (A), the service life is long, the operation and maintenance cost is low, and the requirements of the main wind path are met.

The invention relates to the field of ocean renewable energy technology utilization, and provides an oscillating water column type wave energy power generation device based on a superstructure, which comprises an oscillating water column main body, a superstructure assembly, a top shell and a power generation unit, and is characterized in that the interior of the oscillating water column main body is provided with the superstructure assembly formed by a plurality of guide plates which are arranged along the radial direction and extend in a horn shape; the oscillating water column body is internally divided into a plurality of independent oscillating water column cavities with gradually-changed sizes by combining with the partition plate assembly, an air chamber is defined by the top shell and the oscillating water column body, and airflow energy generated by water column oscillation driving is converted into electric energy through the power generation unit. The power generation unit can adopt a plurality of split type air turbines to generate power or a general type air turbine to generate power. The special fluctuation performance of the superstructure is fully exerted, efficient broadband capture and wave absorption are achieved, meanwhile, wave loads are effectively reduced, diversified integration of wave energy power generation devices is developed, sea area resources and operation and maintenance cost are saved, and negative environmental influences are reduced.

Processes and systems for providing a CO2 enriched stream from an air stream, by: selectively adsorbing, in a first separation zone, CO2 and H2O in an air stream and providing a CO2 and H2O depleted gas stream; separating, in a second separation zone, the CO2 and H2O depleted gas stream and providing an N2 enriched stream, an O2 enriched stream, and an N2 enriched regeneration stream; heating the N2 enriched regeneration stream to provide a heated N2 enriched regeneration stream; selectively desorbing, in the first separation zone, the CO2 and H2O using the heated N2 enriched regeneration stream and providing a spent regeneration gas stream; drying the spent regeneration gas stream to remove H2O and providing a dried spent regeneration gas stream; and separating, in a third separation zone, the CO2 from the dried spent regeneration gas stream to provide a CO2 enriched stream.

The utility model discloses an air curling iron which comprises an inner support used for air inlet and an air guide outer shell arranged outside the inner support in a sleeving mode and used for air outlet, and the air guide outer shell can rotate to switch the air outlet direction. The inner support comprises a plurality of air outlet inner edges axially arranged on the inner wall of a cylinder of the inner support, and a first air outlet and a second air outlet in the axial direction are formed in the two sides of each air outlet inner edge correspondingly. The air guide shell is cylindrical and comprises an air guide opening formed in the air guide shell in the axial direction. The air outlet direction is switched by rotating the outer shell, a user only needs to slightly rotate the outer layer to easily change the direction of airflow, leftward or rightward hair curling is achieved, operation is easy and visual, and using convenience and comfort are greatly improved.

To improve the corrugated separators inserted between the filter media of an air filter so that they do not damage the filter media. In particular, to improve the ends of cross-shaped corrugated separators, which are used with their ridges intersecting, so that they do not damage the filter media. [Solution] A separator formed in a wave shape, wherein the cut surface of the end of the separator does not have an edge, and in the case of a wave separator used by intersecting the ridges of the wave, the end of the separator is formed in a flat portion parallel to the direction perpendicular to the direction of airflow passage.

The utility model provides an anti-blocking device for a mud-containing liquid compressed air aeration pipe, which comprises an air cap and a needle-shaped anti-blocking device, the air cap is arranged at an air distribution hole on an air distribution pipe of a reaction tank, the air cap covers the outside of the air distribution hole, and the needle-shaped anti-blocking device penetrates through the air distribution hole and is arranged inside the air cap. An exhaust hole array is arranged in the air cap, and the needle-shaped anti-blocking device is driven by air flow to generate irregular motion in the aeration process. The needle-shaped anti-blocking device is driven by airflow to move irregularly in the aeration process, so that sludge and sediments in the air distribution holes are automatically scraped, blockage is avoided, and the manual cleaning frequency is reduced. Air flow distribution is optimized through exhaust holes of the air caps, it is ensured that compressed air evenly enters liquid, and the oxidation reaction or sewage treatment efficiency is improved. The movement of the anti-blocking device does not influence the original gas speed and gas flow, and a stable aeration effect is maintained.

The utility model provides a bird repelling device for a wind power plant, which comprises a storage bottle, an air hole is formed in the storage bottle, and medicament is contained in the storage bottle; a shaft rod is rotationally connected to the storage bottle, a plurality of multi-face prism light reflecting heads are installed at the end, located outside the storage bottle, of the shaft rod in the circumferential direction in a surrounding mode, each multi-face prism light reflecting head comprises a curved surface part and a plane part, the curved surface parts are attached through a plurality of light reflecting mirror faces, and the plane parts are attached through the light reflecting mirror faces. The storage bottle is installed in a designated area of a wind power plant, when sunny weather is accompanied by breeze, airflow acts on the multi-face prism light reflecting head to enable the shaft rod to rotate, so that the multi-face prism light reflecting head rotates and is matched with the light reflecting mirror face to conduct multi-angle and multi-area light reflecting, and the bird repelling effect is higher; and in the rotating process of the shaft rod, the bird repelling agent balls in the storage bottles volatilize to achieve the bird repelling effect, and only the bird repelling agent balls need to be replaced regularly. And the device is not provided with an electronic structure and is not influenced by circuit damage.

An aircraft turbomachine (1) comprising: - an air stream (4) delimiting a free volume in which an airflow (F) circulates from upstream to downstream; - a volumetric heat exchanger (10) comprising a fluidic network extending in the free volume of the air stream (4) and comprising an internal surface for guiding a fluid to be cooled and an external surface defining passages for the circulation of the airflow (F) to cool the fluid to be cooled, the heat exchanger (10) comprising a height greater than 50% of a height of the air stream (4); - light-emitting diodes (18) in the infrared range fixed on an upstream end (15) of the heat exchanger (10) and electrically controllable in an active mode ensuring de-icing or preventing icing of the upstream end (15) of the heat exchanger (10). Figure from the summary: Figure 1

This invention provides a mobile wind tunnel device capable of outputting uniform droplets, belonging to the field of icing and anti-icing technology for ships and marine structures. The device includes: a stabilizing rectangular cavity and a transitional circular-to-square cavity, the stabilizing rectangular cavity and the transitional circular-to-square cavity being connected. The circular opening of the transitional circular-to-square cavity is connected to a variable frequency fan. A honeycomb rectifier and multiple airfoil spray frames are installed inside the stabilizing rectangular cavity, with the honeycomb rectifier located between the variable frequency fan and the airfoil spray frames. This mobile wind tunnel achieves uniform droplet output, maintaining a stable airflow field through the honeycomb rectifier; by arranging heating tape in the water and air pipes inside the airfoil spray frames, the wind tunnel device can operate for extended periods in low-temperature environments without icing; and a control cabinet controls wind speed, water pressure, and air pressure to obtain icing data for the ship's superstructure under different wind speeds and droplet diameters.

The application discloses a LES super-high-resolution TC atmospheric flow field numerical simulation method and system, and relates to the fields of atmospheric observation, numerical assimilation and high-resolution numerical simulation. The method is characterized in that: three-dimensional dynamic-thermal information is obtained by implementing airship platform radar observation and downward sounding observation in the core area of a tropical cyclone; the radar radial wind and profile observation operators are preprocessed and constructed; a data assimilation strategy is adopted to integrate multi-source observation in a multi-nested grid numerical model to generate a three-dimensional initial / reanalysis field suitable for large eddy simulation; then, a large eddy simulation solver is configured on the innermost grid covering the boundary layer of the tropical cyclone; fine horizontal grids and boundary layer encryption vertical stratification are adopted to explicitly analyze the boundary layer vortex, small-scale convection and turbulent structure; and a super-high-resolution three-dimensional flow field product for fine evaluation of strong wind and disaster risk is output.

The invention relates to a ducted wind turbine comprising: a horizontal rotary shaft (1); blades (3) connected by one end to a bushing (2); and an electric generator (4) connected to the horizontal shaft by a gear box (5). In addition, the blades (2) and the bushing (3) are shrouded by a conduit provided with: an inlet section, with an inlet opening (6) that allows the passage of an air current; a central section, with at least two lateral faces (7a, 7b), an upper face (7c) and a lower face (7d); and an outlet section, with an outlet opening (8) arranged at an angle of 0-75º, such that the angle of the direction of the air current in the outlet opening (8) is at 165-90º with respect to that of the air current in the inlet opening (6).

The invention relates to the technical field of iron and steel smelting sintering environmental protection, in particular to a sintering flue gas pollutant collaborative emission reduction system and method based on air volume optimization and hot air circulation. According to the system, the sintering units are partitioned, and the reasonable arrangement of the air bellow partition regulation and control module, the CO enrichment flue gas circulation module, the high-temperature and high-oxygen flue gas circulation module and the monitoring and control module is combined, so that accurate circulation reuse of flue gas with different characteristics can be realized, the flue gas circulation rate and the energy utilization rate are improved, and stable sintering quality is guaranteed; meanwhile, on the basis of real-time data of sensors in all areas, airflow distribution and flue gas retention time are optimized by dynamically adjusting the opening degree of an air box valve, the air volume of a circulating fan, the oxygen supplementation amount and other parameters, sufficient combustion of CO and catalytic reduction of NOx are promoted, the retention time of a dioxin generation temperature area is shortened, and then the flue gas pollutant removal efficiency is greatly improved.

The invention discloses a miniature automatic weather station and a temperature measurement optimization control method and system. The temperature measurement performance of the miniature weather station is improved through global comprehensive optimization in the aspects of a system structure, circuit layout and a data algorithm. The system structure is improved, the structural design of the double-layer vertical-wall hollow cylindrical radiation-proof cover retains the advantage of compact structure of the miniature automatic weather station, and meanwhile, a conventional horizontal natural ventilation radiation-proof cover in a louver blade overlapping form is changed into the double-layer vertical-wall hollow cylindrical radiation-proof cover; sampling airflow is changed from horizontal natural ventilation airflow to vertical active air exhaust sampling. According to real-time meteorological environment data, a sampling air pump is driven and controlled in a segmented mode to operate, the solar radiation intensity, the atmospheric wind speed and the atmospheric temperature are used as control variables to determine the operation speed and the sampling flow of the sampling air pump, and a working mode, a circulation control variable and a working time sequence are selected. And in the aspect of a data processing algorithm, a multi-source data fusion calibration method is adopted to improve the accuracy of temperature measurement data.

The invention relates to the field of ventilation walls, and discloses a ventilation wall and a using method.The ventilation wall comprises a pore plate assembly and only one axial flow fan facing the pore plate assembly, the pore plate assembly comprises a fixed pore plate and a sliding pore plate, the fixed pore plate is provided with a plurality of first holes, the sliding pore plate is provided with a plurality of second holes, the second holes and the first holes are the same in size, the sliding orifice plate is arranged to move at least partially in the direction parallel to the fixed orifice plate so as to change the area of the aligned part of at least part of the first hole and the second hole, and therefore the actual through-flow area of the orifice plate assembly is adjusted. And the axial flow fan is arranged to adjust the air pressure of the upstream side of the pore plate assembly by adjusting the rotating speed of the axial flow fan. A single axial flow fan is adopted as a core wind source, uniform and continuous airflow supply is provided for a wind wall through stable power output, the airflow fluctuation problem caused by individual rotating speed difference of a traditional distributed small fan is avoided, the flow field quality and the flow field intensity are both considered, the mixing area is reduced, and a stable airflow foundation is laid for accurate wind control.

The application relates to a kind of pneumatic buffering and energy recycling mechanism and its control method, it includes wave energy conversion device, oscillating buoy, pneumatic cylinder, gas interaction device, gas storage tank and for control system, wave energy conversion device is arranged on offshore platform, the upper end of oscillating buoy is fixedly connected with the lower end of wave energy conversion device, the upper end of wave energy conversion device is connected with pneumatic cylinder, gas interaction device is arranged between pneumatic cylinder and gas storage tank, gas interaction device is communicated with pneumatic cylinder and gas storage tank.The application in actual use, oscillating buoy oscillates up and down under the action of wave, wave energy conversion device converts the mechanical energy of oscillating buoy into electric energy;Control gas interaction device adjusts airflow direction, when wave is too large, gas storage tank and pneumatic cylinder provide force in the opposite direction of oscillating buoy movement, realize the function of buffering, when small wave, give oscillating buoy the same force in the direction of movement, improve power generation efficiency, help to solve the problem of unstable energy recovery efficiency.

The application discloses a five-constant temperature preservation sound attenuation pipeline and belongs to the technical field of pipelines. The pipeline comprises a pipe body, the pipe body comprises a wide pipe part and narrow pipe parts, the wide pipe part is between the two narrow pipe parts, the pipe body comprises two halves, the two halves are fixedly connected with each other, the two halves are provided with temperature preservation mechanisms outside, the wide pipe part is provided with a porous mechanism for dividing the airflow into multiple airflows, and the two halves are fixedly connected with each other. The application forms a zigzag channel in the pipeline, when the airflow enters the wide pipe part from the narrow pipe part, the airflow passes through the porous mechanism, the airflow is divided into multiple airflows by the porous mechanism, the airflow is diffused into a larger airflow, then the diffused airflow is gathered again when entering the narrow pipe part again, the airflow is diffused again when entering the wide pipe part again through the porous mechanism, and the energy of the airflow is weakened after repeated diffusion, so that the wind speed of the airflow is weakened to achieve the sound attenuation effect.

The invention discloses a mountain area power transmission line rime icing prediction method and system, and relates to the technical field of power transmission line icing prediction.The mountain area power transmission line rime icing prediction method comprises the following steps that the vorticity gradient of terrain disturbance is calculated based on terrain features and wind speed vectors in meteorological data; a momentum relaxation equation of the supercooled water drops is established according to the vorticity gradient, and the deviation degree between the water drop movement track and the airflow streamline is solved; according to the deviation degree, carrying out space redistribution on the content of supercooled liquid water in the meteorological data to obtain the content of effective liquid water; based on the effective liquid water content, iteratively solving the real-time ice density by using an energy balance physical model and calculating the initial value of the icing thickness; and performing feature coupling on the initial value of the icing thickness and the vorticity gradient, inputting a machine learning model to predict a systematic deviation value, and correcting the initial value of the icing thickness to obtain the final icing thickness. According to the method, the influence of terrain disturbance on the flow field is quantified through the vorticity gradient, and the prediction precision of rime icing of the power transmission line in the mountainous area is remarkably improved.

A method for monitoring and / or controlling a CO2 separation device (10) for separating CO2 from a supplied gas stream (14), in particular an air stream (14) from an environment, is presented, wherein a weight and / or an extent of, in particular, pourable CO2 separation agents is determined during the execution of the CO2 separation process and / or the CO2 release process, in particular by means of a sensor unit (42), and an information signal and / or control signal is / are output.

The application discloses a non-contact flow field measuring device and method with nitrogen droplets as tracer particles, and belongs to the technical field of flow field visualization. A Laval nozzle is used as a nitrogen droplet generating device, and the Laval nozzle is arranged in a high-speed flow section. After the nitrogen droplets flowing out of the Laval nozzle are mixed with the main flow in the high-speed flow section, the nitrogen droplets pass through an expansion section and a flow regulation section and then enter a speed measuring section. A high-speed camera is used in the speed measuring section to capture the nitrogen droplets and obtain the air flow speed. By actively regulating and controlling the operating parameters of the wind tunnel, the total temperature, the Ma number and the expansion ratio of the Laval nozzle in the wind tunnel are reasonably controlled, so that the condensation nitrogen droplets are spontaneously generated at a proper position, the condensation degree is controlled, and the disturbance of the flow field near the test model is reduced as much as possible. The application aims to solve the key problem that suitable and available tracer particles are lacked in the application of the non-contact measurement technology in a low-temperature wind tunnel, and provides a new feasible way for the application of the non-contact flow field measurement technology in a transonic low-temperature wind tunnel.

The present application proposes a fuzzy comprehensive evaluation method for the characteristics of the ship air flow field based on the use requirements of the ship air flow field of the carrier aircraft and typical carrier equipment. The analytic hierarchy process and the technique for order preference by similarity to ideal solution are extended to the interval type-2 fuzzy group decision-making situation to effectively deal with the uncertainty and difference of expert opinions. To solve the problem that the consistency verification is difficult to pass due to the increase in the number of evaluation indexes, an improved algorithm for geometric consistency of individual judgment matrix is proposed. An improved IT2FAHP-based weighting method for the evaluation indexes of the characteristics of the ship air flow field is established to improve the rationality and operability of the index weight distribution. To solve the problem that it is difficult to scientifically evaluate the satisfaction of the use requirements of the ship air flow field characteristics under the actual atmospheric environment combination working condition, a fuzzy envelope-based performance evaluation method for the ship air flow field indexes is proposed. An improved IT2FTOPSIS-based comprehensive evaluation method for the characteristics of the ship air flow field is established to provide new ideas and methods for solving the evaluation problem of the ship air flow field.

This invention provides a method for synchronous measurement and data fusion of surface coordinates, position degree, and step difference in a wind tunnel, belonging to the field of surface technology in wind tunnels. This invention acquires raw point clouds by deploying a laser displacement sensor array and a 3D scanner in the wind tunnel test section. A refraction field prediction model is established using temperature and pressure data, and optical path deviations are corrected using a ray tracing algorithm. The point cloud is divided into surface regions and step difference regions using octree spatial indexing and region growing segmentation. The position degree deviation is calculated using the moving least squares method for the surface regions, and sub-pixel-level step difference measurement is achieved for the step difference regions through morphological operations, double-threshold hysteresis tracking, and Hough transform. Finally, a multi-source data fusion weight allocation function is established based on measurement uncertainty to generate a comprehensive measurement report. This invention solves the technical problem of the inability to synchronously and accurately measure the three types of geometric parameters—surface coordinates, position degree, and step difference—under high-speed airflow conditions in wind tunnels.

This invention relates to the field of in-situ testing of plant airflow resistance characteristics, and provides a suitable in-situ testing method for plant airflow resistance characteristics. It employs a portable, quick-assembly in-situ DC wind tunnel in conjunction with a handheld anemometer and anemometer. The DC wind tunnel consists of a portable bed-type lifting frame and a wind tunnel device mounted on it, allowing for free adjustment of the test support platform's ground clearance, thus enabling flexible adjustment of the wind tunnel body, i.e., the height of the test port. Using this DC wind tunnel structure, the wind field at any wind speed can be reproduced by adjusting the variable frequency fan in the power section. Combined with the handheld anemometer and anemometer, the wind speed and pressure values ​​before and after the plant are measured. The average value of each measuring point before and after is taken as the final measured wind speed and pressure value. Based on the measured pressure drop and wind speed, the drag coefficient at different heights of the plant is calculated, thereby enabling in-situ testing of the plant's aerodynamic resistance characteristics at different heights and wind speeds.

The application discloses a kind of perforated array evaporation devices that are continuously rotated with wind, and relates to the technical field of evaporation separation equipment, solve the technical problems of low evaporation efficiency, high energy consumption, poor adaptability and inconvenient maintenance of existing evaporation devices.The device includes a support assembly, an evaporation body that can rotate around the support assembly, and a water collection assembly;The evaporation body is made of lightweight, breathable and corrosion-resistant material, and the surface is uniformly distributed with a through-hole array, which can rotate without power under the action of natural wind;The water collection assembly is arranged below the evaporation body and is used to collect condensed water;The support assembly includes a support column and a rotating bearing to ensure the flexible rotation of the evaporation body.The application cooperates with the perforated array through wind rotation, strengthens air exchange and water evaporation, does not require external power, has high evaporation efficiency, simple structure, convenient maintenance, strong corrosion resistance, and is suitable for various scenes such as seawater desalination, sewage concentration and wastewater recovery, can realize the cooperative use of wind energy and solar energy, and has high practicality and economy.

The present application belongs to the technical field of structural wind resistance design, and particularly relates to a typhoon full-path simulation method based on conditional generative adversarial network. The present application firstly establishes a typhoon occurrence probability model and a typhoon movement speed random generator, generates random samples of typhoon movement speed under given 250hPa and 850hPa height air flow conditions, and simulates typhoon movement trajectory; then establishes a typhoon intensity model to simulate typhoon intensity evolution; based on the randomly generated typhoon path and intensity samples, the basic meteorological parameters of each point of the coastal shoreline are statistically compared with historical data; a typhoon three-dimensional nonlinear boundary layer wind field model is established to simulate typhoon annual extreme wind speed samples, and a typhoon ground surface annual extreme wind speed probability distribution is established. The present application establishes a nonlinear mapping relationship between typhoon movement and intensity change and environmental variables, and reflects the non-Gaussian probability characteristics of typhoon intensity evolution.

The invention discloses artificial tornado wind power generation equipment and method, and belongs to the technical field of wind power generation. The equipment comprises a shell, an air collecting tank I, an air collecting tank II, a plurality of circulating generator sets I, a plurality of circulating generator sets II and an air conveying pipe, wherein the air collecting tank I is arranged in the air collecting tank II in a sleeved mode and forms a multi-layer circulating space through partition plates. An external air source is conveyed to each layer of space in a layered mode through an air conveying pipe, part of airflow enters through an air inlet of an air collection tank II, and a horizontal layer circulation system is formed through a circulation generator set I; and the other part of the air flow enters the air collection tank I through the spiral air inlet in a tangential rotational flow manner, is gathered with the air flow input by the bottom air inlet pipe I, spirally ascends, is output to the circulating generator set II through the air crown end, and then flows back to the air conveying pipe, so that a three-dimensional circulating system is formed. Horizontal layer circulation and three-dimensional circulation are coupled to form tornado characteristic overall circulation airflow, and each generator set converts airflow kinetic energy into electric energy and merges the electric energy into a power grid. By means of a double-circulation coupling mechanism, efficient wind power generation in a low-wind-speed environment is achieved.

The present application provides a kind of quantitative evaluation method of the influence of wind tunnel inner surface roughness on airflow quality, belongs to the technical field of wind tunnel, the present application is collected by laser confocal scanner wall roughness multi-resolution point cloud data, high frequency, medium frequency and low frequency roughness component is extracted by wavelet decomposition, power spectral density function and fractal dimension are calculated to establish random roughness field probability distribution model, local velocity field and vorticity distribution are obtained by using lattice Boltzmann algorithm to simulate rough wall near flow field, the uniformity of airflow is calculated by generating equivalent random roughness field sample using Monte Carlo method for statistical analysis, the polynomial mapping function of roughness statistical characteristic parameter and airflow quality degradation index is established, when degradation index exceeds allowable threshold, wall roughness is over standard, solve the technical problems of low precision and insufficient calculation efficiency in quantitative evaluation of the influence of multi-scale random roughness on wind tunnel airflow quality.

The present application belongs to the technical field of intelligent regulation, and discloses an intelligent control cabinet regulation method and system based on environmental regulation, comprising: obtaining environmental parameter regions and corresponding three-dimensional environmental data; obtaining environmental regulation sensitivity and environmental stability through parameter coupling analysis and air flow state distribution analysis; evaluating air flow interaction based on environmental stability to obtain air flow balance strength and regulation prediction index; constructing an adaptive control framework to form a dynamic fusion control strategy; constructing an anomaly detection model to analyze environmental parameter abnormal fluctuations and generate an abnormal response strategy; combining the dynamic fusion control strategy and the abnormal response strategy to perform parameter optimization and energy efficiency adjustment, and generating an optimal environmental regulation scheme; finally, executing the scheme and performing real-time monitoring and feedback adjustment; the present application realizes precise environmental regulation of an intelligent control cabinet.