## 1 Introduction
Computational fluid dynamics (CFD) simulation can be used to simulate indoor and outdoor wind and thermal field distribution [14;15], and can be implemented using software such as ANSYS Fluent 2022 R2 and COMSOL6.3. Computational fluid dynamics (CFD) technology can simulate and analyze the behavior of wind in complex terrain and building environments. This information is very valuable for the design, construction, and long-term maintenance management of large-scale building projects. The distribution of indoor and outdoor wind fields is an important factor affecting the safe operation of large single buildings; in particular, the wind fields of large stadiums will have an important impact on athletes' performance. Research on the outdoor wind fields of buildings mainly includes corridor ventilation, building layout, structural stability, and building wind load. Most scholars have mainly studied the relationship between wind field distribution characteristics and building form based on CFD technology or wind tunnel experiments. [PERSON] et al. [16] developed a CFD and evolutionary algorithm-driven method to optimize building configurations for urban ventilation, and showed a 16% ventilation improvement in dense areas. [PERSON] et al. [17] analyzed wind flow around cross-shaped high-rise buildings using CFD and wind tunnel tests, finding that building orientation, spacing, and wind angles critically affect pedestrian-level airflow, with oblique winds generating vortices, improving dispersion and comfort. [PERSON] et al. [18] measured the wind load of high-rise building models at different incident angles through wind tunnel tests, and used CFD technology to complete a simulation study with the same parameters as the experimental study. They explored the wind pressure distribution of octagonal buildings at different wind incident angles (\(0^{\circ}\), \(15^{\circ}\), and \(30^{\circ}\)) and measured the average area-weighted wind pressure on the surface of the building model. In the study of indoor wind fields in buildings, most scholars mainly focus on the relationship between indoor wind field and fire smoke diffusion and the comfort of indoor occupants. [PERSON] et al. [19] used FDS software to establish a numerical simulation model of high-rise building fires, and analyzed the changes in smoke layer height, temperature, visibility, and CO concentration over time in a high-rise building of a hospital in Shanxi Province, China. They established an emergency evacuation model, divided and optimized evacuation routes based on simulation results, and shortened the safe evacuation time. [PERSON] et al. [20] analyzed the characteristics of indoor air flow organization by numerically simulating the velocity field and temperature field of a large sports stadium in Sichuan Province, China. Their study found that the use of air conditioning air supply in the form of seat air supply (downward air supply), side air supply, rear return air, and top exhaust makes the air flow distribution in the stadium uniform able to meet human comfort requirements. We know that athletes' performance is affected by many factors, such as technical level [21], physical fitness and strength, equipment quality and design [22], psychological factors [23], training and preparation [24], and other subjective factors of athletes. In addition to the above-mentioned subjective factors, it is also closely related to objective factors, such as track conditions [25] and climate conditions. Therefore, many scholars have begun to pay attention to the study of wind field changes and athletes' performance. [PERSON] et al. [26] established a three-dimensional human body model and a skeleton model, and used CFD numerical simulation technology to obtain the distribution law of aerodynamic parameters, such as pressure, streamline vorticity, and aerodynamic drag, around the skeleton and the athlete, providing a quantitative reference for the drag reduction of skeleton sports. [PERSON] et al.