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首页> 外文会议>25th Conference on Agricultural and Forest Meteorology and 12th Joint Conference on the Applications of Air Pollution Meteorology with Aamp;WMA and Fourth Symposium on the Urban Environment May 20-24, 2002 Norfolk, Virginia >A MULTI-SCALE MESOSCALE ATMOSPHERIC MODEL FOR SIMULATION OF AIRFLOW AROUND BUILDINGS IN COMPLEX TERRAIN
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A MULTI-SCALE MESOSCALE ATMOSPHERIC MODEL FOR SIMULATION OF AIRFLOW AROUND BUILDINGS IN COMPLEX TERRAIN

机译：多尺度中尺度大气模拟的多尺度中尺度大气模型

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摘要

The modified mesoscale model HOTCFD successfully simulated wind and turbulence distributions behind obstacles, which showed many characteristics similar to those observed in wind tunnel experiments. Each coordinate system has the strength and weakness. For example, the Cartesian coordinate system is suitable for a single or a few number of buildings to produce accurate solutions if appropriate grid structure is selected. Treating buildings as part of terrain in a terrain-following coordinate provide high grid resolutions along the walls of all the buildings. Although wind distributions in the horizontal planes appear to be reasonable, the vertical structure of the flows such as separation and wakes behind the buildings are not simulated as accurate as using the Cartesian coordinate system. In the future, additional tests will be conducted, where a steady state boundary condition will be replaced by the time dependent boundary conditions resulted from diurnal heating and cooling of the ground by solar heating and long wave radiation cooling.
机译：改进的中尺度模型HOTCFD成功地模拟了障碍物后面的风和湍流分布，显示出许多与风洞实验中观察到的相似的特征。每个坐标系都有其优势和劣势。例如，如果选择了适当的网格结构，则笛卡尔坐标系适用于单个或几个建筑物以产生精确的解决方案。将建筑物视为地形跟随坐标中的地形的一部分，可沿所有建筑物的墙壁提供较高的网格分辨率。尽管水平面上的风分布似乎是合理的，但模拟的垂直流结构（例如建筑物后的分离和尾流）并未像使用笛卡尔坐标系那样精确。将来，将进行其他测试，其中稳定的边界条件将由日间加热和太阳加热和长波辐射冷却对地面的冷却所导致的时间相关的边界条件所代替。

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