강풍피해 위험성 평가를 위한 건물군 주위 유동해석

Numerical simulation of turbulent flow around a building complex for development of risk assessment technique for windstorm hazards

  • 최춘범 (인하대학교 기계공학과 대학원) ;
  • 양경수 (인하대학교 기계공학과) ;
  • 이승수 (충북대학교 구조시스템공학과) ;
  • 함희정 (강원대학교 건축공학과)
  • 발행 : 2007.05.30

초록

Strong wind flow around a building complex was numerically studied by LES. The original motivation of this work stemmed from the efforts to develop a risk assessment technique for windstorm hazards. Lagrangian-averaged scale-invariant dynamic subgrid-scale model was used for turbulence modeling, and a log-law-based wall model was employed on all the solid surfaces including the ground and the surface of buildings to replace the no-slip condition. The shape of buildings was implemented on the Cartesian grid system by an immersed boundary method. Key flow quantities for the risk assessment such as mean and RMS values of pressure on the surface of the selected buildings are presented. In addition, characteristics of the velocity field at some selected locations vital to safety of human beings is also reported.

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