Large-Eddy Simulations of Atmospheric Flows Over Complex Terrain Using the Immersed-Boundary Method in the Weather Research and Forecasting Model
作者: Yulong MaHeping Liu
作者单位: 1Washington State University
刊名: Boundary-Layer Meteorology, 2017, Vol.165 (3), pp.421-445
来源数据库: Springer Nature Journal
DOI: 10.1007/s10546-017-0283-9
关键词: Bolund Hill experimentComplex terrainImmersed-boundary methodLarge-eddy simulationWeather Research and Forecasting model
英文摘要: Atmospheric flow over complex terrain, particularly recirculation flows, greatly influences wind-turbine siting, forest-fire behaviour, and trace-gas and pollutant dispersion. However, there is a large uncertainty in the simulation of flow over complex topography, which is attributable to the type of turbulence model, the subgrid-scale (SGS) turbulence parametrization, terrain-following coordinates, and numerical errors in finite-difference methods. Here, we upgrade the large-eddy simulation module within the Weather Research and Forecasting model by incorporating the immersed-boundary method into the module to improve simulations of the flow and recirculation over complex terrain. Simulations over the Bolund Hill indicate improved mean absolute speed-up errors with respect to previous...
原始语种摘要: Atmospheric flow over complex terrain, particularly recirculation flows, greatly influences wind-turbine siting, forest-fire behaviour, and trace-gas and pollutant dispersion. However, there is a large uncertainty in the simulation of flow over complex topography, which is attributable to the type of turbulence model, the subgrid-scale (SGS) turbulence parametrization, terrain-following coordinates, and numerical errors in finite-difference methods. Here, we upgrade the large-eddy simulation module within the Weather Research and Forecasting model by incorporating the immersed-boundary method into the module to improve simulations of the flow and recirculation over complex terrain. Simulations over the Bolund Hill indicate improved mean absolute speed-up errors with respect to previous...
全文获取路径: Springer Nature  (合作)
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来源刊物:
影响因子:2.291 (2012)

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关键词翻译
关键词翻译
  • recirculation 再循环
  • higher 
  • vertical 垂线
  • complex 超群
  • simulation 模拟
  • atmospheric 大气的
  • escarpment 
  • behind 在后
  • model 模型
  • pollutant 污染物质