Numerical Simulation of Typhoon Using YanMeng Wind-Field Model

In this paper, a numerical simulation method is used to simulate the typhoon based on the typhoon physical model and observation data. The physical equation of YanMeng wind field model is introduced, and then based on the key parameters of Typhoon Rammasun and the wind speed observation data of Xuwen meteorological station in Guangdong, China. The inversion of Typhoon Rammasun was carried out by using the iteration method in polar coordinates. The results show that YanMeng wind field model has a strong adaptability to simulate typhoon under the condition of certain accuracy. However, the precision of simulation is affected by the Holland pressure parameter B and equivalent roughness length, and it takes on negative correlation trend between speed of simulation and these two parameters. Therefore, when using YanMeng wind field to simulate typhoon, these two parameters are not static, the specific analysis should be made according to the site of the typhoon and the landform of simulation sites.