Abstract
To ensure successful hosting of the 2022 Olympic Winter Games, a comprehensive understanding of the wind field characteristics in the Chongli Mountain region is essential. The purpose of this research was to accurately simulate the microscale wind in the Chongli Mountain region. Coupling the Weather Research and Forecasting (WRF) model with a computational fluid dynamics (CFD) model is a method for simulating the microscale wind field over complex terrain. The performance of the WRF-CFD model in the Chongli Mountain region was enhanced from two aspects. First, as WRF offers multiple physical schemes, a sensitivity analysis was performed to evaluate which scheme provided the best boundary condition for CFD. Second, to solve the problem of terrain differences between the WRF and CFD models, an improved method capable of coupling these two models is proposed. The results show that these improvements can enhance the performance of the WRF-CFD model and produce a more accurate microscale simulation of the wind field in the Chongli Mountain region.
Highlights
One site of the 2022 Olympic Winter Games, to be held in China, is located in the Chongli Mountain region of Hebei Province
Numerical simulation is the only method that can describe the detailed distribution of the wind field in the Chongli Mountain region
This study aimed at enhancing the performance of a mesoscale and computational fluid dynamics (CFD) coupled system in the Chongli Mountain region from two aspects using the Weather Research and Forecasting (WRF) mesoscale model [30]
Summary
One site of the 2022 Olympic Winter Games, to be held in China, is located in the Chongli Mountain region of Hebei Province. To successfully host the Olympic Winter Games, meteorological support for the playing fields should be ensured. A comprehensive understanding of the wind-field characteristics in the Chongli Mountain region is essential for ensuring the safety of outdoor matches, such as ski jumping, cross-country skiing, and alpine skiing. The distribution of a wind field over flat terrain can be acquired from observations. The structures of a wind field in mountainous terrain are quite complex, and the representativeness of observation data is limited in a small area. Numerical simulation is the only method that can describe the detailed distribution of the wind field in the Chongli Mountain region
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