61 results about "Surface winds" patented technology

The invention relates to the technical field of meteorological data processing, in particular to a progressive wind speed field depth downscaling method and device fusing multi-source data and space-time perception, electronic equipment and a storage medium. Multi-scale topographic features are introduced and self-adaptive fusion is performed, so that the wind field reconstruction precision in a complex topographic region is improved; a progressive multi-stage downscaling network architecture is adopted, large-multiple stable downscaling from the kilometer level to the hectometer level is effectively achieved, and error accumulation is controlled; reconstruction is carried out by utilizing a network trained through physical constraint loss, it is ensured that the divergence and the vorticity of an output wind field conform to the aerodynamics law, the physical rationality and the scientific credibility of a result are enhanced, and therefore an efficient solution is provided for obtaining a near-ground wind field with high resolution and high physical credibility.

The invention provides a ground-based laser radar near-surface wind field modeling method and system based on data fusion, and relates to the technical field of wind field modeling, and the method comprises the steps: firstly carrying out the multiple scanning of a target terrain region through a ground-based laser radar, so as to obtain an observation data set; acquiring land surface temperature data matched with the three-dimensional point cloud data in a space-time manner, and fusing the land surface temperature data with the three-dimensional point cloud data to generate a coupling data set; generating initial wind field feature vectors at different moments based on the coupling data set; the vectors are processed through a long-short-term memory network, and target wind field feature vectors are generated; inputting the target vector into a wind field inversion model constructed based on a high-order Taylor expansion polynomial, and calculating three-dimensional wind field data and turbulence characteristic data; and finally, constructing a near-ground wind field model of the target terrain area according to the data through a self-adaptive interpolation algorithm. According to the invention, the precision and accuracy of complex terrain near-surface wind field modeling are improved.

The invention discloses a wind tunnel test aerodynamic force and displacement signal phase difference correction method based on self-excited vibration characteristics. The method comprises the following steps: independently collecting structure surface wind pressure and vibration displacement signals; integrating the wind pressure signal to obtain a self-excitation aerodynamic force time history; identifying the vibration frequency and the total damping ratio of the system from the displacement signal; filtering the aerodynamic force time history to extract a fundamental frequency component; based on a structural dynamic balance principle, establishing an analytic relational expression between an aerodynamic force out-of-phase component coefficient and total damping of the system; and carrying out iterative time translation on the aerodynamic force time history by taking the displacement signal as a reference until the out-of-phase component of the aerodynamic force time history meets the analytic relationship, so as to determine and correct the system delay. The invention further discloses a wind tunnel test aerodynamic force and displacement signal phase difference correction system based on the self-excited vibration characteristic and a storage medium. According to the method, electric triggering and physical transmission delay can be compensated with high precision without additional hardware, and the pneumatic parameter identification reliability is effectively improved.

The invention relates to the technical field of communication equipment, in particular to a directional antenna and a control method thereof.The directional antenna comprises a main body, a rotating mechanism, an antenna and a wind speed sensing mechanism, a control center is arranged in the main body, the rotating mechanism is rotatably arranged on the upper surface of the main body, and the side face of the rotating mechanism is an inclined face forming an included angle with the rotating axis; the antenna is vertically arranged on the side face of the rotating mechanism, the wind speed sensing mechanism is located on the upper surface of the body, and the wind speed sensing mechanism is in signal connection with the control center. The antenna has the advantages that the directional antenna is convenient to carry, and the antenna has high stability in a severe environment.

The invention discloses a conditional diffusion method for reconstructing multi-source meteorological data for tropical cyclones. The conditional diffusion method comprises the following steps: acquiring an infrared radiation brightness set, a polarization correction temperature set and a sea surface wind speed of different tropical cyclones in a specified historical period; constructing a polarization correction temperature reconstruction model based on the conditional diffusion model; the input of the polarization correction temperature reconstruction model is an infrared radiation brightness temperature set, and the output target is a polarization correction temperature set; carrying out transfer learning on the trained polarization correction temperature reconstruction model to form a sea surface wind speed reconstruction model; the input of the sea surface wind speed reconstruction model is an infrared radiation brightness temperature set, and the output target is the sea surface wind speed. Therefore, the mapping relation from the infrared radiation brightness temperature to the multi-source meteorological data is established through generative deep learning of conditional diffusion, so that the multi-source meteorological data with the temporal-spatial resolution the same as that of geostationary orbit observation is reconstructed, and good performance is shown on various meteorological indexes and computer vision indexes.

The invention provides a cooling tower surface high-risk area identification method based on a wind tunnel pressure measurement test, and aims to provide a cooling tower surface high-risk area identification method which is objective, quantitative and integrates average and fluctuating wind pressure effects. Comprising the steps of data acquisition, gridding, negative pressure area preliminary screening, comprehensive risk index calculation and result output. The core lies in the definition of a comprehensive risk index, the index combines an average local shape coefficient and a pulsation local shape coefficient, and the comprehensive risk index is formed through a mathematical function. According to the method, the defects that in the prior art, subjective experience is relied on, and fluctuating wind pressure contribution is neglected are overcome, so that automatic and precise recognition of the wind-induced high-risk area on the surface of the cooling tower is achieved, and a more scientific basis is provided for wind resistance design.

The application belongs to the technical field of desertification prevention, and particularly relates to a compound grass-sand barrier construction method and system based on a 'grape' shape, which comprises the following steps: S1: using GPS, a drone and other tools to survey and map the topography of the sand land to be treated, combining historical meteorological data to determine the main wind direction, and planning the sand barrier laying area and 'grape' unit layout; S2: preparing sand barrier construction materials, the materials comprising one or more of straw, corn stalks, reeds and sand willow branches, and screening and processing are performed to ensure the material quality; the 'grape' type cluster net structure design achieves the effect of efficiently interfering with and shunting near-surface wind-sand flow; the 'grape' type sand barrier unit is distributed in a cluster shape by a plurality of small grass bundles, and is connected into a net structure by short grass belts, and this design more effectively interferes with, shunts and guides the wind-sand flow than the uniform grid-shaped grass checkerboard, thereby improving the comprehensive performance of wind erosion prevention and sand burial prevention.

The application discloses an in-vehicle wind noise prediction method and device, electronic equipment and a storage medium. The method comprises the following steps: acquiring a side window surface wind noise time domain signal of a model vehicle at different wind speeds; processing the side window surface wind noise time domain signal to determine a side window surface wind noise average sound pressure level increment; using a predetermined wind noise correlation to determine an in-vehicle noise sound pressure level increment associated with the side window surface wind noise average sound pressure level increment; wherein the wind noise correlation is obtained by difference technology and curve estimation regression analysis according to the side window surface wind noise and the in-vehicle wind noise of a base vehicle; and determining the in-vehicle wind noise according to the in-vehicle noise sound pressure level increment. According to the technical scheme, the in-vehicle wind noise can be predicted through the wind noise correlation, the prediction reliability is high, the method is simple and easy to use, and the time consumption is short.

This invention discloses a method, system, and storage medium for identifying the surface wind pressure aerodynamic derivative that quantifies the contribution of aerodynamic instability to geometric shapes. The method includes: simultaneously acquiring the surface wind pressure time history and vibration displacement time history of the structural cross-section; processing the displacement signal to obtain the vibration frequency, amplitude, and phase difference; processing the wind pressure signal to obtain the wind pressure coefficient amplitude and phase difference at each measuring point; based on the theory of self-excited aerodynamics, establishing an explicit analytical formula through harmonic coefficient matching, and calculating the surface wind pressure aerodynamic derivative at each measuring point; analyzing the aerodynamic derivative at each measuring point, evaluating the contribution of each surface region to the overall aerodynamic derivative, and identifying key aerodynamic regions that excite or suppress self-excited vibrations. This invention degrades traditional macroscopic aerodynamic derivatives to spatial micro-elements, establishing a spatial mapping analytical closed chain between local wind pressure and aerodynamic derivatives, realizing spatial visualization and quantitative traceability of aerodynamic stability contributions, and providing a direct basis for targeted optimization of wind resistance for complex cross-sectional structures.

The application relates to a building shape optimization method, which comprises the following steps: in a first case, determining an optimized first value of a first parameter of a target building according to the value of a first index of the target building under a first candidate value of the first parameter, the first index comprising the following first index items: a roof average wind pressure coefficient, an average wind pressure coefficient difference between a windward surface and a leeward surface, and building heating energy consumption; and in a second case, determining an optimized second value of a second parameter of the target building according to the value of a second index of the target building under a second candidate value of the second parameter, the second index comprising the following second index items: a proportion of detection points with a surface wind speed less than a non-snow accumulation wind speed, a proportion of detection points with a roof wind speed less than the non-snow accumulation wind speed, and a proportion of detection points with a ground wind speed less than the non-snow accumulation wind speed.

The application discloses a kind of marine robot cluster tracking optimization control methods for non-cooperative target, first for the marine robot system working in water surface environment, respectively establish linearization marine robot cluster dynamics model and the dynamics model of non-cooperative target;Then construct state tracking error system;Design finite time sliding mode control protocol, simultaneously solve the equivalent state tracking error system that moves on sliding surface;Next define the performance index function of marine robot cluster system, design distributed state feedback nominal optimization control protocol, ensure that performance index function meets global Nash equilibrium;Finally, using Hurwitz stability theory proves that distributed state feedback nominal optimization control protocol can ensure the asymptotic stability of equivalent state tracking error system.The method of the application can realize the optimization tracking control of marine robot cluster system to non-cooperative target with uncertain control strategy under the interference of complex marine environment water surface wind wave.

The invention relates to a local surface layer wind field fusion and nowcasting method, and belongs to the technical field of meteorological wind field fusion and forecasting. According to the method, the wind shear index calculated by a 90-meter anemometer tower is utilized to fill up a wind profile at the height of 90 meters above a surrounding automatic station, Barnes step-by-step corrected wind field fusion is carried out in combination with WRF-LES large eddy simulation, a convolutional neural network model is established between a large eddy simulation data set and a fused wind field data set, model parameters are obtained, and the wind field fusion is realized. And the parameters are used in WRF-LES real-time forecast to obtain proximity correction forecast of the near-earth wind field. According to the method, the local anemometer tower and encrypted automatic station data are fully applied, WRF-LES modeling is integrated, the method can be used for forecasting a local wind field, and the corresponding algorithm and process are suitable for wind field forecasting of wind power, low-altitude economy and the like.

The invention belongs to the technical field of wind load experiment testing, and particularly discloses a modularized equivalent wind load experiment testing system which is characterized by comprising a wind load simulation module, a data acquisition and processing module, a model fixing and supporting module, a control system module and a function extension module. The wind load simulation module is used for adjusting wind load strength and wind speed and realizing 0-360-degree wind direction adjustment; the data acquisition and processing module is used for monitoring physical quantities such as displacement and strain of the experimental model and wind speed, wind pressure and the like of a wind field, and processing to generate an experimental result and an analysis report; the model fixing and supporting module is used for fixing the experimental model and adjusting the levelness and perpendicularity of the experimental model; the control system module is used for setting experiment parameters, controlling experiment start and stop and process monitoring and realizing data transmission between modules; the function extension module is used for measuring wind pressure distribution on the surface of the model, displaying the flow state of a wind field and monitoring vibration response of the model; all the modules are connected and transmit data through standard interfaces.

The invention provides a bluff body steel box girder temperature field determination method based on convective heat transfer coefficient correction. The method comprises the following steps: S1, analyzing section wind field characteristics of the bluff body steel box girder based on CFD software; s2, constructing an influence model of the aspect ratio uniform section parameter change on the steel box girder wind field, performing regression analysis on a calculation result, and establishing a calculation formula and a value suggestion quantity of each surface wind speed correction coefficient of the bluff body steel box girder under the condition of different aspect ratios; s3, respectively establishing steel box girder thermal analysis models before and after convective heat transfer coefficient correction; s4, the accuracy of the convective heat transfer coefficient correction method in bluff body steel box girder temperature field simulation is checked through bridge field actual measurement temperature data; s5, analyzing a bluff body steel box girder temperature field change rule under the condition of different aspect ratios, and finally establishing a bluff body steel box girder temperature field determination method suitable for different section parameters; the accuracy and reliability of the bridge temperature field analysis result can be improved.

The application belongs to the technical field of bridge wind resistance engineering, and discloses a numerical simulation method of bridge structure wind load under the action of tornado based on CFD, which comprises the following steps: referring to the geometric configuration of a tornado laboratory simulation device, a CFD calculation domain model of a three-dimensional tornado generator is established, a speed inlet boundary condition is constructed by using Doppler radar observation data of a real tornado, and a three-dimensional tornado wind field is obtained by numerical solution; a vortex ratio is controlled by an inflow angle, and a tornado intensity is controlled by an inlet wind speed. The numerical simulation method of bridge structure wind load under the action of tornado based on CFD aims to solve the problem that in the existing numerical simulation method of tornado wind field based on CFD, an idealized analytical wind field is used as a boundary condition to drive the generation of a wind field, and there is a lack of quantitative mapping relationship between control parameters and wind field structure characteristic quantities, so that the bridge structure surface wind pressure coefficient cannot be systematically obtained under the working conditions of multiple radial positions and wind direction angles.

This invention discloses a method for predicting the spatial distribution of algal blooms in lakes based on near-surface wind vectors and a Bi-GRU-Attention model. The invention employs Empirical Orthogonal Function (EOF) analysis to extract the dominant mode of algal bloom spatial distribution and time coefficients that represent the temporal variation characteristics of algal bloom spatial patterns. Then, a bidirectional gated cyclic unit model based on an attention mechanism is constructed to extract key dynamic features from the wind vector time series and identify wind periods that significantly contribute to the formation of algal bloom spatial distribution patterns. Finally, the time coefficients of the dominant mode of algal bloom spatial distribution are predicted using the wind vector time series state, and the spatial distribution of algal blooms is reconstructed by combining the corresponding spatial modes. This invention provides a new approach for the study of wind-driven algal bloom spatial distribution.

The present application relates to a kind of tidal flat complex underlying surface wind turbine SAR identification method, comprising: generating annual SAR time series composite image;The mean value of each pixel in the preset backscattering coefficient interval of the composite image is calculated, and high backscattering value image is generated;High backscattering value image is binarized and segmented;The morphological processing is carried out to the binarized image to enhance high backscattering target;Multi-scale screening mechanism based on geometric features is established;Difference spatial resolution processing is implemented, and wind turbine point vector data is output.The beneficial effects of the present application are: the present application effectively improves the identification precision of tidal flat and open sea wind turbine, and provides reliable technical support for fine evaluation and management of offshore wind power resources.

The present application relates to the technical field of laser wind measurement radar, and discloses a laser wind measurement radar blind area optimization and compensation method and system.The method comprises the following steps: obtaining echo signal distribution data, determining a blind area spatial range based on a signal-to-noise ratio discrimination criterion, extracting a non-blind area boundary layer wind field gradient feature, physically reconstructing a blind area wind field in combination with an atmospheric turbulence continuity constraint condition, generating a fusion wind field result, and adjusting radar parameters and correcting the discrimination criterion according to the fusion result.The present application solves the technical problem of the existence of a measurement blind area of a laser wind measurement radar, and improves the near-surface wind field measurement precision and integrity.

The application belongs to the technical field of marine aquaculture, and discloses a lifting type truss net cage for semi-submersible cultivation and bottom-avoiding platform, which comprises a truss net cage structure, wherein a net is arranged in the truss net cage structure; the lifting type truss net cage further comprises a multi-working-condition ballast tank assembly, a positioning ballast tank, a traction rope and an in-out fish assembly; the multi-working-condition ballast tank assembly is connected to the front and back surfaces of the bottom end of the truss net cage structure; according to the sea condition forecast or real-time monitoring data, the truss net cage structure can be actively and quickly switched between the floating, semi-submersible and fully-submersible states; when extreme weather such as typhoon is encountered, the truss net cage structure can be dived to the semi-submersible or fully-submersible state to avoid the area with the strongest surface wind and wave impact, thereby greatly reducing the damage of the truss net cage structure and the risk of fish escape, and realizing the leap from passive bearing to active avoidance.

The application provides a lightning protection wind measuring device of an offshore wind turbine, and relates to the technical field of wind power monitoring, which comprises a base, the upper end of the base is provided with a lightning receptor, the lightning receptor comprises a flange fixing disc, a main lightning rod and a framework ring, the flange fixing disc and the framework ring are provided with a wind direction follow-up flow guiding structure, the wind direction follow-up flow guiding structure is installed in cooperation with a first sliding groove in a first ring, a first sealing bearing and a second sealing bearing installed in a second ring, and a first connecting ring, a second connecting ring, a first connecting rod support, a wind tail wing, a second connecting rod support and a trapezoidal arc surface wind guiding indicator installed oppositely, so as to form a complete wind vane structure, which can guide external airflow to flow stably along the streamlined surface of the trapezoidal arc surface wind guiding indicator, disperse the force of wind by using the guiding effect of airflow, reduce the wind resistance load borne by the whole lightning receptor, and avoid the occurrence of inclination, tilt or structural damage of the lightning receptor caused by the continuous impact of strong wind.

The application discloses a kind of dynamics methods for reconstructing tropical ocean near-surface flow using multi-source satellite data, obtains and pre-processes satellite observation data and buoy data;Using satellite observation sea level and simplified dynamic method reconstructs beta plane approximation quasi-geostrophic flow and geostrophic flow;Beta plane approximation quasi-geostrophic flow and geostrophic flow are fused into tropical ocean near-surface quasi-geostrophic flow using weight function;Using sea surface 10m wind speed and near-surface wind-driven Ekman flow parameterization scheme to calculate tropical ocean near-surface wind-driven Ekman flow;Fusion tropical ocean near-surface quasi-geostrophic flow and tropical ocean near-surface wind-driven Ekman flow, preliminary obtain the reconstruction field of tropical ocean near-surface flow;Using real-time buoy data to evaluate and test preliminary reconstruction field, obtain more reliable tropical ocean near-surface flow field;According to application requirement, output multiple types of tropical ocean near-surface flow.The application calculation principle is simple, reconstructs fast, can objectively and accurately reflect the dynamic characteristics of actual tropical ocean near-surface flow field.

The invention discloses a high-rise building group component failure probability dynamic evaluation method considering typhoon spatial-temporal variation characteristics, and the method comprises the steps: extracting structural wind load characteristics, obtaining a surface wind pressure time history through a wind tunnel experiment, and converting the surface wind pressure time history into a node load time history; structural damage is rapidly recognized, and based on a refined finite element model and a lumped damage mechanical model, two state variables of a damage driving rotation angle DDR and a damage variable DAM are defined to rapidly recognize a damage area; performing component failure assessment, and quantifying the failure probability by judging whether the damage exceeds a threshold value or not; the failure probability is quantified under the typhoon spatial-temporal change, typhoon early warning information is accessed in real time, node loads are dynamically updated, the component failure probability is calculated, and minute-level response is achieved. According to the method, failure probability dynamic evaluation of tens of thousands of building group components can be efficiently and accurately realized, and decision support is provided for urban disaster prevention.

The application relates to the technical field of power systems, and provides a power distribution system disaster risk assessment method and device under typhoon disasters and electronic equipment. The method comprises the following steps: inputting geographic information data and typhoon trajectory parameters of a power distribution system; initializing the operation state of each feeder of the power distribution system; calculating the disaster resistance of each feeder; constructing a dynamic typhoon wind field model based on the geographic information data and the typhoon trajectory parameters, and solving the surface wind speed at the position of the feeder; comparing the surface wind speed with the disaster resistance, updating the feeder fault state based on the comparison result; calculating the power outage evaluation index of the power distribution system based on the updated feeder fault state, and returning to the step of initializing the operation state of each feeder of the power distribution system until a preset simulation end condition is reached, and outputting the power outage evaluation index. Through the iteration mechanism of dynamic wind field modeling and disaster resistance comparison, the disaster simulation resolution is self-adaptive, the accuracy is high, more scientific decision support is provided, and the power distribution system flexibility is enhanced.

The present invention belongs to the field of marine microwave remote sensing technology and relates to a correction method and system for inverting sea surface current velocity based on synthetic aperture radar data. The method comprises: obtaining the Doppler centroid frequency shift; removing the Doppler frequency shift caused by relative motion between the satellite and the ground, electromagnetic pointing error, and the Doppler frequency shift caused by the sea surface wind and wave field from the Doppler centroid frequency shift to obtain the Doppler frequency shift electromagnetic pointing error caused solely by ocean currents. The method for calculating the electromagnetic pointing error is as follows: when the land-free imaging data and the land-imaged area data are in adjacent areas within the same orbital period, a first-order linear equation is fitted based on the electromagnetic pointing error of the land-imaged area data to calculate the electromagnetic pointing error of the land-free imaging data; and the sea surface current velocity is calculated based on the ratio of the Doppler frequency shift caused solely by ocean currents to the radar wave number and radar incident angle. The correction method proposed by the present invention does not require additional data such as satellite pitch, roll, and yaw attitude parameters and SAR antenna pattern data for electromagnetic pointing error estimation.

The utility model discloses a double-curved-surface wind shield, which relates to the field of wind shield manufacturing, and comprises a main wind shield and a side wind shield, the side wind shield can move along the main wind shield, and a side exhaust channel is formed between the inner side surface of the main wind shield and the outer side surface of the side wind shield. After the structure is adopted, as the side air exhaust channel is formed between the main air baffle and the side air baffle, and the side air baffle can move left and right on the main air baffle, when the air conditioner operates, a large amount of cold air is exhausted from the side air exhaust channel, and the main air baffle can block part of cold air, so that the air baffle can prevent direct blowing of the air conditioner; and the air outlet amount of the side exhaust channel is large, so that the temperature difference between the inner side and the outer side of the wind shield is small, and condensation formed on the inner side of the wind shield when the temperature difference is too large is effectively prevented.

The invention relates to the technical field of environment monitoring, in particular to a desert wetland underground humidity and surface wind erosion automatic monitoring method and device, and the device comprises a temperature change rate prediction module, an FIFO buffer preloading module, a hardware trigger direct connection module and a signal synchronization alignment circuit. A temperature compensation value is predicted through a recursive least square method, and humidity signal compensation and sampling alignment of sub-millisecond level delay are realized in combination with a hardware-level synchronization mechanism. According to the application, the problem of data link breakage caused by thermal response lag and MCU interruption delay in an extreme environment by a traditional monitoring means can be solved, the timeliness and precision of a monitoring system are remarkably improved, and the method is suitable for long-term stable monitoring of complex environments such as desert wetland and the like.

The invention discloses a plane symmetry aircraft online active rolling load shedding method based on attitude angle and overload feedback, and the method comprises the steps: carrying out the online double-loop feedback of a ground speed attack angle and normal overload generated by a pitching and yaw program angle instruction, and generating a rolling program angle instruction and a swing angle instruction; therefore, the matching relation between the channel control / bearing capacity and aerodynamic force is optimized, the airspeed attack angle is rolled to the dominant surface of the aircraft, the aerodynamic force of the disadvantage surface under the guidance requirement can be effectively reduced, the control force allowance of the aircraft can be released, the flight load and the control requirement of the disadvantage surface are reduced, and on the premise that the configuration of the vehicle is not changed, the service life of the aircraft is prolonged. The defects that a wind correction method depends on a forecast wind field and an active load shedding method obviously changes the axis of a carrier are overcome, and the problem of strong constraint of a disadvantageous surface wind attack angle caused by asymmetrical bearing force or asymmetrical control force of a surface symmetry aircraft is solved.

The invention belongs to the technical field of meteorological simulation, discloses a systematic tropical cyclone and high-resolution wind field modeling method, system and device based on environment driving and a medium, and aims to solve the problem of wind field simulation distortion in complex terrains. The method comprises the following steps: acquiring and unifying environment field data; calculating a dynamic generation potential index field based on the base month average climate field, defining a space-time generation probability, and randomly sampling to generate an initial event set of a plurality of synthetic tropical cyclone events; performing iterative simulation on each synthetic tropical cyclone event, and outputting full life cycle information; aiming at the full life cycle information, based on a gradient wind balance physical model, calculating each position point in the moving track information and a corresponding central air pressure difference value, and obtaining a near-surface wind field under an open terrain assumption as a first near-surface wind field; and acquiring high-resolution terrain data, inputting the high-resolution terrain data and the first near-surface wind field into the terrain adaptive correction model, and outputting the corrected near-surface wind field as a second near-surface wind field.

This application provides a flow guiding device for an indirect air-cooled tower and an indirect air-cooled tower, including an outlet flow guiding device and a tower bottom flow guiding device. The outlet flow guiding device includes multiple guide plates evenly arranged along the circumference at the top of the tower outlet, with flow holes penetrating through the guide plates. The tower bottom flow guiding device is located at the middle of the bottom of the tower. By setting guide plates at the top of the tower outlet and opening flow holes on the guide plates, crosswinds can be guided, reducing interference from strong crosswinds. By setting the tower bottom flow guiding device at the middle of the tower bottom, resistance to crosswinds is created, resulting in a more uniform wind speed distribution on the outer surface of the heat exchanger finned tube bundle. Through the synergistic effect of the outlet flow guiding device and the tower bottom flow guiding device, the disruption of the aerodynamic field inside the tower by crosswinds is reduced, avoiding uneven heat exchange and efficiency reduction, thereby improving heat exchange efficiency.

The invention relates to the technical field of fan simulation, and particularly discloses a fan load simulation method, system and device, a medium and a program product, and the fan load simulation method comprises the steps: obtaining a wind wheel surface reference wind condition of a target fan device; based on the wind wheel surface reference wind condition of the target fan equipment, determining the wind wheel surface construction wind condition of the target fan equipment under the specified wind condition; and determining the simulation load condition of the target fan equipment under the specified wind condition based on the wind wheel surface construction wind condition of the target fan equipment under the specified wind condition. According to the technical scheme provided by the invention, in the fan load simulation process, the wind wheel surface reference wind condition is obtained through three-dimensional calculation fluid mechanics simulation, and the wind wheel surface wind condition of the fan equipment under the specified wind condition is accurately constructed in combination with the inlet wind field file; and the accuracy of the load simulation condition is improved under the condition that a large amount of calculation cost does not need to be consumed.