Back Trajectory Analysis of Pathline for Strong Wind within Pedestrian Space based on LES Database

DOI

Bibliographic Information

Other Title
  • LESデータベースに基づく歩行者空間の強風の流跡線の逆追跡

Abstract

<p>In recent years, increasing access to computing power has led to the prediction of pedestrian-wind-environment using LES. In the assessment for pedestrian-wind-environment based on the RANS model, the maximum instantaneous wind speed was estimated by multiplying the mean wind speed with the gust factor. However, LES can predict the instantaneous wind speed directly. In this study, we conducted LES of the flow field around an isolated building and analyzed the cross-correlation between the wind speed fluctuation in the windward of the building and the pedestrian height around the building. Then, we focused on a strong wind event in the side of the building and applied a back trajectory method to estimate pathline of the strong wind in the side of the building. Based on the back trajectory method, it is indicated that the air cell for the strong wind directly flowed from the middle height of the building in the windward to the windward corner of the building without impinging the windward wall of the building in this event.</p>

Journal

Keywords

Details 詳細情報について

  • CRID
    1390564238100022656
  • NII Article ID
    130007662540
  • DOI
    10.14887/jaweam.2019.0_175
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

Report a problem

Back to top