基于RANS的城市风预测CFD模拟——MoTUS的现场验证

IF 1.3 4区工程技术 Q3 CONSTRUCTION & BUILDING TECHNOLOGY

Wind and Structures Pub Date : 2021-07-01 DOI:10.12989/WAS.2021.33.1.029

D. Lee, Dasaraden Mauree

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引用次数: 0

摘要

本文提出了一项研究，其主要目的是通过城市环境中的真实环境测量来验证室外气流CFD模拟结果（ANSYS R Fluent）。本文讨论了模拟设置的细节，包括入口边界条件、表面粗糙度参数和表示树木影响的源/汇项。将模拟结果与瑞士洛桑联邦理工学院（EPFL）城市设置湍流测量项目（MoTUS）的高分辨率现场风速测量结果进行了比较。基于不同的风向和风速，进行了多次模拟以评估模型的性能。在本研究结束时，从所有18个验证案例中观察到高度一致和准确的结果；模拟风速的均方根误差仅在0.21和0.59m/s之间。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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RANS based CFD Simulations for Urban Wind Prediction –Field Verification against MoTUS

The current paper presents an investigation, which has its main objective in the verification of outdoor wind flow CFD simulation results (ANSYS R Fluent) with real environment measurements in urban setting. The details of the simulation set-up are discussed in the paper including the inlet boundary conditions, surface roughness parameters and the source/sink terms to represent the effect of trees. The simulation results are compared with the high-resolution on-site wind velocity measurements from the Measurement of Turbulence in an Urban Setup (MoTUS) project of Ecole Polytechnique Federale de Lausanne (EPFL) in Switzerland. Multiple simulations were conducted to evaluate the performance of the model based on different wind direction and speeds. At the end of the current study, the highly consistent and accurate results were observed from all 18 verification cases; with the RMSEs of the simulated wind velocities in range of 0.21 and 0.59 m/s only.

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来源期刊

Wind and Structures 工程技术-工程：土木

CiteScore

2.70

自引率

18.80%

发文量

审稿时长

>12 weeks

期刊介绍： The WIND AND STRUCTURES, An International Journal, aims at: - Major publication channel for research in the general area of wind and structural engineering, - Wider distribution at more affordable subscription rates; - Faster reviewing and publication for manuscripts submitted. The main theme of the Journal is the wind effects on structures. Areas covered by the journal include: Wind loads and structural response, Bluff-body aerodynamics, Computational method, Wind tunnel modeling, Local wind environment, Codes and regulations, Wind effects on large scale structures.