Using large eddy simulation to study airflows in and around buildings

Yi Jiang, Mingde Su, Qingyan Chen

Research output: Journal article publicationConference articleAcademic researchpeer-review

19 Citations (Scopus)

Abstract

This investigation uses three subgrid-scale models of large eddy simulation (LES) to study airflows in and around buildings. They are the Smagorinsky model, a filtered dynamic subgrid-scale model, and a stimulated small-scale subgrid-scale model. For outdoor airflow that is highly turbulent, the simple Smagorinsky model is sufficient. For indoor airflow where laminar flow can be as important as turbulent flow, the filtered dynamic subgrid-scale model and the stimulated small-scale subgrid-scale model are recommended. However, the computing time required by the filtered dynamic subgrid-scale model and the stimulated small-scale subgrid-scale model are considerably higher than that by the Smagorinsky model. This paper also discusses how to set up boundary conditions for wind and how to simulate indoor and outdoor airflow together with good resolution and reasonable size of the computational domain for natural ventilation studies.

Original languageEnglish
Pages (from-to)517-526
Number of pages10
JournalASHRAE Transactions
Volume109 PART 2
Publication statusPublished - 2003
Event2003 Annual Meeting of the American Society of Heating, Refrigerating and Air-Conditioning Engineers - Kansas, United States
Duration: 28 Jun 20032 Jul 2003

ASJC Scopus subject areas

  • Building and Construction
  • Mechanical Engineering

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