설비공학논문집 (Korean Journal of Air-Conditioning and Refrigeration Engineering)
- 제10권2호
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- Pages.217-226
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- 1998
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- 1229-6422(pISSN)
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- 2465-7611(eISSN)
건물 계단통에서의 부력에 의한 난류유동 해석
Simulation of buoyant turbulent flow in a stairwell
초록
A numerical study has been carried out for two- and three-dimensional buoyant turbulent flow in a stairwell model. The Reynolds-averaged Navier-Stokes and energy equations are solved with the authors'own computer program. Two models by the Boussinesq approximation and the density-gradient form are used for buoyancy terms in the governing equations. Two- and three-dimensional predictions of the velocity and temperature fields are presented and the results are compared with experimental data. Comparisons have also been made in detail with two-dimensional predictions. Two-dimensional and three-dimensional simulations have predicted the overall features of the flow satisfactorily. A better agreement with experiment is achieved with three-dimensional simulations.