Research On The Optimal Design By Coupling The Interface Morphology And Wind Environment For The Professional Football Stadium In Cold Season And Region

Under a strategy named “Healthy China” and the building of a sports power,the public’s awareness on health is gradually increasing,and the environmental health of sports buildings has increasingly become a bottleneck restricting the development of sports buildings,especially in the occasion that the COVID-19 epidemic occurs.With the vigorous development of China’s football cause,the construction of professional football stadiums in China is about to enter the fast track.As an ideal space carrier for the development of professional football,the semi-outdoor professional football stadiums in the cold region of China is inevitably affected by the wind environment.The wind environment often affects the play of players’ tactics to a large extent,thus affecting the game’s brilliance and fairness.When the audience is in a low temperature environment for a long time,they will become extremely sensitive to the change of wind speed,and the excessive wind will even threaten the safety of the audience.Wind environment is very important for the viewing experience of the audience.At the same time,the comfortable wind environment also helps to create the home atmosphere and cultivate the fan market.Therefore,it is urgent to conduct a detailed study on the wind environment of the professional football stadiums in a cold season.Based on theories related to wind environment at home and abroad,the more than 1,500 samples obtained from a research in two consecutive years(2018-2020),and the numerical simulation method,this study conducts a detailed study on the coupling between interface morphology and wind environment of professional football stadium in the cold region in the cold season.This study contains the following contents:Firstly,the evaluation model of wind environment is constructed.From the comprehensive,objective and gradation dimensions,the evaluation principles of professional football stadium’s wind environment are built.From the humans’ feeling under the wind,the comfortable wind speed range in the cold season are determined.Meanwhile,the comprehensive index for evaluating the audience-field and infield of the professional football stadium under the wind environment is also determined.Using the multi-factor comprehensive evaluation method,the evaluation model of the wind environment is constructed.Secondly,the basic simulation model and the simulation parameters for the wind environment simulation of professional football stadium are obtained,meanwhile,the incoming flow conditions in the simulation are also acquired.The pre-processor,the solver and the post-processor are selected in the numerical simulation.The national Olympic sports center stadium is used as a measured location and the urban gradient wind and turbulence which can make the simulation close to the actual situation are imported in the processors.By comparing the simulated result with the measured result,the effectiveness of simulation platform is verified.The space capacity,plane shape and seating arrangement of 106 professional football stadiums at home and abroad are compared and analyzed,so the basic model of football stadiums used for simulation is determined.Based on the simulation theory,the parameter setting,the computational domain scale,the grid division and the boundary conditions are determined.Through the statistical analysis of the urban wind environment in the cold region,several groups of comparative simulation experiments are designed and the reasonable initial wind speed and wind direction are obtained.Finally,the coupling between the interface shape of the professional football stadium and the wind environment is analyzed and optimized.The side interface,the inner interface morphology and the permeability of the professional football stadium are taken as the object of the research.Through several comparisons of the simulation cases,the interface morphology of the audience-field and the infield under the wind environment is obtained.Using the wind environment evaluation model,the simulation data is analyzed from the perspective of the audience’s and athlete’s comfort level.According to the results,the study can provide a new strategy for the optimization of the professional football stadium’s interface form in the cold region of our country.