Simulation of Strong Wind Field by Non-hydrostatic Mesoscale Model and Its Applicability for Wind Hazard Assessment of Buildings and Houses
Simulation of Strong Wind Field by Non-hydrostatic Mesoscale Model and Its Applicability for Wind Hazard Assessment of Buildings and Houses
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DOI：
10.3178/hrl.4.40
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发表时间：
2010
影响因子：
1.1
通讯作者：
T. Maruyama;Eriko Tomokiyo;Junji Maeda
中科院分区：
文献类型：
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作者：
T. Maruyama;Eriko Tomokiyo;Junji Maeda
对2004年穿越日本九州的台风松达造成的强风场进行了数值模拟。非静水介观尺度模型用于数值模拟。将模拟风场与由风观测网络NeWMeK测量的风速和风向进行了比较。结果发现，1公里水平网格上计算的风速的时间变化对应于10到15分钟内观测到的风速的平均值。计算出的风向的时间变化与观测结果吻合良好。计算风速的最大值与观测风速的最大值高度相关。检验了中尺度模型对建筑物风害评估的适用性，发现较高海拔处的计算风速最大值与台风“松达”造成的房屋受损率具有较高的相关性。
The strong wind field caused by Typhoon Songda, which passed through Kyushu in Japan in 2004, was simulated numerically. A non-hydrostatic mesoscale model was used for the numerical simulation. The simulated wind field was compared with the observed wind field in terms of wind speeds and directions, which were measured by the wind observation network, NeWMeK. It was found that the temporal variation of the calculated wind speeds at 1 km hori-zontal mesh grids correspond to the average of the observed wind speeds over a ten to fifteen minute time period. The temporal variation of the calculated wind directions showed good agreement with the observations. The maximum values of the calculated wind speeds were highly correlated to the maximum values of the observed wind speeds. The applicability of the mesoscale model for the wind hazard assessment of buildings was examined, and it was found that the maximum values of the calculated wind speeds at higher altitudes showed higher correlations with the rates of damaged houses caused by Typhoon Songda.