文章基本信息

标题：Application of Different Turbulence Models Simulating Wind Flow in Complex Terrain: A Case Study for the WindForS Test Site
本地全文：下载
作者：Hermann Knaus ; Martin Hofsäß ; Alexander Rautenberg 等
期刊名称：Computation
电子版ISSN：2079-3197
出版年度：2018
卷号：6
期号：3
页码：43-67
DOI：10.3390/computation6030043
出版社：MDPI Publishing
摘要：A model for the simulation of wind flow in complex terrain is presented based on the Reynolds averaged Navier–Stokes (RANS) equations. For the description of turbulence, the standard k-ε, the renormalization group (RNG) k-ε, and a Reynolds stress turbulence model are applied. Additional terms are implemented in the momentum equations to describe stratification of the Earth’s atmosphere and to account for the Coriolis forces driven by the Earth’s rotation, as well as for the drag force due to forested canopy. Furthermore, turbulence production and dissipation terms are added to the turbulence equations for the two-equation, as well as for the Reynolds stress models, in order to capture different types of land use. The approaches for the turbulence models are verified by means of a homogeneous canopy test case with flat terrain and constant forest height. The validation of the models is performed by investigating the WindForS wind test site. The simulation results are compared with five-hole probe velocity measurements using multipurpose airborne sensor carrier (MASC) systems (unmanned small research aircraft)—UAV at different locations for the main wind regime. Additionally, Reynolds stresses measured with sonic anemometers at a meteorological wind mast at different heights are compared with simulation results using the Reynolds stress turbulence model.
关键词：wind simulation; complex terrain; canopy; Reynolds averaged Navier–Stokes equations (RANS); second moment closure wind simulation ; complex terrain ; canopy ; Reynolds averaged Navier–Stokes equations (RANS) ; second moment closure