Laboratory study of wind loads on a low-rise building in a downburst using a moving pulsed jet simulator and their comparison with other types of simulators

Kazunori Asano, Yumi Iida, Yasushi Uematsu

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Downburst produces strong winds near the ground and causes severe damage to buildings and people. The non-stationarity of downburst is characterized by moving downdraft and pulsed jet to the ground. In practice, both characteristics have often been observed simultaneously. These characteristics significantly affect the wind loads on buildings, particularly on low-rise buildings. However, the previous experimental studies of downbursts focused on each of these characteristics separately. No study has been made of their coupled effect. Therefore, we have developed a downburst simulator, which can generate a pulsed jet and a moving downdraft either separately or simultaneously. In the present paper, we have experimentally investigated the effects of non-stationary characteristics of downbursts on the wind field and wind loads on a flat-roofed low-rise building using this downburst simulator. The results may become a useful database for validating numerical simulation models of downbursts.

Original languageEnglish
Pages (from-to)313-320
Number of pages8
JournalJournal of Wind Engineering and Industrial Aerodynamics
Volume184
DOIs
Publication statusPublished - 2019 Jan

Keywords

  • Downburst simulator
  • Non-stationarity
  • Wind load
  • Wind pressure distribution
  • Wind tunnel experiment
  • Wind velocity

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Renewable Energy, Sustainability and the Environment
  • Mechanical Engineering

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