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首页> 外文会议>2009年土木工程结构创新与可持续发展国际会议（The International Symposium on Innovation Sustainability of Structures in Civil Engineering）论文集 >NUMERICAL SIMULATION OF THE CHARACTERISTICS OF TYPHOON AND WIND FIELD IN XIAMEN REGION
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NUMERICAL SIMULATION OF THE CHARACTERISTICS OF TYPHOON AND WIND FIELD IN XIAMEN REGION

机译：厦门地区台风风场的数值模拟

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摘要

The extreme wind speed and the basic wind pressure are necessary for structural wind resistance design at coastal areas. Since the actual observation data of typhoon-induced wind are insufficient, the methods of numerical simulation of typhoon are commonly used to obtain the extreme wind speed. In this paper, Yan Meng wind field model is introduced to simulate typhoons in Xiamen region. With the observation data of Typhoon Wilda (T7301) and Typhoon Dan (T9914), numerical calculation results are compared with the observation data to certify the applicability of the numerical model for Xiamen region. In Yan Meng model, the Holland parameter B determines the pressure distribution and affects the wind field. A method is presented to determine the proper value for parameter B. The equivalent roughness length zo is a comprehensive concept proposed in Yan Meng model to express the topographical effect and terrain roughness. Different values of zo are adopted to illuminate its effect on wind speed distribution. Furthermore, the relationship between the equivalent roughness length zo and the wind direction is described according to the track records of the above two typhoons and the value of zo for Xiamen is discussed to obtain the best value in Xiamen region.
机译：极端风速和基本风压是沿海地区结构抗风设计所必需的。由于台风诱发的实际观测资料不足，因此通常采用台风数值模拟的方法来获得极端风速。本文介绍了盐梦风场模型，以模拟厦门地区的台风。利用台风王达（T7301）和台风丹（T9914）的观测数据，将数值计算结果与观测数据进行比较，以证明该数值模型在厦门地区的适用性。在Yan Meng模型中，Holland参数B确定压力分布并影响风场。提出了一种确定参数B合适值的方法。等效粗糙度长度zo是Yan Meng模型中提出的一种综合概念，用于表达地形效应和地形粗糙度。采用不同的zo值来说明其对风速分布的影响。此外，根据上述两次台风的记录，描述了等效粗糙度长度zo与风向之间的关系，并讨论了厦门的zo值，以求得厦门地区的最佳值。

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