Numerical study of air movement in a slot-ventilated enclosure

Xinlei Wang, Jianbo Jiang, Yuanhui Zhang

Research output: Contribution to journalConference articlepeer-review


In this paper, airflow in a slot-ventilated enclosure is numerically studied at Reynolds number 5024, which is based on inlet height and mean velocity at the inlet. Both Reynolds averaged Navier-Stokes (RANS) simulation and large eddy simulation (LES) are applied, and numerical results are compared to corresponding experimental data. Most of the flow features observed in experiments could be predicted by both RANS and LES models, but the latter provides more detailed flow structures. Mean velocity from both numerical simulations agrees fairly well with the measurements. It is found that LES does not show much superiority over the RANS model for predicting mean velocity. Investigation of subgrid constant and viscosity ratio shows that the instantaneous airflow is a combination of turbulence and laminar and transitional flows. The paper also analyzes the vortex dynamics in the flow with recourse to flow feature extraction techniques. Vortex cores are extracted and their roles in the evolution of flow are analyzed.

Original languageEnglish (US)
Pages (from-to)400-405
Number of pages6
JournalASHRAE Transactions
Volume113 PART 1
StatePublished - 2007
Event2007 Winter Meeting of the American Society of Heating, Refrigerating and Air-Conditioning Engineers - Dallas, TX, United States
Duration: Jan 27 2007Jan 31 2007

ASJC Scopus subject areas

  • Building and Construction
  • Mechanical Engineering


Dive into the research topics of 'Numerical study of air movement in a slot-ventilated enclosure'. Together they form a unique fingerprint.

Cite this