Multi-fidelity Shape Optimization method for CFD Simulations of Pedestrian-level Wind Environment

DOI

Bibliographic Information

Other Title
  • Multi-Fidelity形状最適化手法の歩行者風環境CFDへの適用

Description

<p>In this study, we proposed a building shape optimization method that minimizes the effect of a high-rise building on wind velocity accerelation by complementary use of RANS (low-fidelity) and LES (high-fidelity) models. The effectiveness of the method is further examined by applying it to pedestrian wind environment problem in an idealized city block. The incremental performance value (IPV) of RANS and LES are in good agreement when the wind speed increase evaluated at K>1.1. On the other hand, when K>1.3, the IPV by LES was larger than that by RANS. The difference was especially large when the wind direction is 0°. This is due to the fact that SRANS does not reproduce the high wind speed peaks that occur near the upwind cavity and the side of the high-rise building in RANS. However, the trend of IPV with the change in wind direction was well captured.</p>

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Details 詳細情報について

  • CRID
    1390006895526356864
  • NII Article ID
    130008052805
  • DOI
    10.14887/jaweam.2021.0_95
  • Text Lang
    en
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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