基于YanMeng模型模拟台风的初步探索  

Initiative Research on Typhoon Simulation by YanMeng Wind Field Model

作　　者：李涛[1] 雷鹰[1] 徐志谦[1] 刘朝[1] 

机构地区：[1]厦门大学建筑与土木工程学院,福建厦门361005

出　　处：《厦门大学学报（自然科学版）》2009年第6期840-843,共4页Journal of Xiamen University：Natural Science

基　　金：建设部专项项目课题:超高层建筑风振实测试点及技术细则研究;厦门市建设系统科技技术项目(2008-1)资助

摘　　要：利用风场模型对台风进行数值模拟得到极值风速这一方法已被广泛应用.首先详细介绍YanMeng风场模型物理模型及数值解法;着重强调该模型中的两个随机参数:Holland参数B、等效粗糙长度z0,讨论了它们对气压场及风速的影响程度,并给出相应取值方法;最后以YanMeng风场模型作为技术背景,根据厦门气象局提供的实测台风数据对台风DAN进行数值模拟,得到梯度风场以及台风影响下厦门地区表面风速,以证明YanMeng风场模型的可行性.Many kinds of analytical models have been developed for simulating the typhoon wind field to access possible extreme wind velocity. YanMeng wind field model and the solution scheme are introduced to make some basic researches on wind field in this study. Two stochastic parameters, Holland parameter B and equivalent roughness length z0 ,are presented to discuss their sensitivity indices about pressure field and wind velocity. Finally the results of Typhoon DAN simulated by YanMeng model are illuminated through comparison with the observation data. The calculated results of simulated wind field are so agreeable with the observed data to certify the applicability of YanMeng model in the simulation of wind field induced by typhoon.

关 键 词：YanMeng风场模型 Holland参数 等效粗糙长度 模拟风场 

分 类 号：TU973.32[建筑科学—结构工程]