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최훈기,유근종,임윤승 한국기계가공학회 2018 한국기계가공학회지 Vol.17 No.2
A vortex tube is a simple energy separating device that splits a compressed air stream into a cold andhot stream without any external energy supply or chemical reactions. The efforts of many researchers anddesigners have been focused on improvement of vortex tube efficiency by changing the parameters affectingvortex tube operation. The effective parameters are nozzle specifications and inflow pressure conditions. Effects of different nozzle cross-sectional area and number of nozzles are evaluated by computational fluiddynamics (CFD) analysis. In this study, CFD analysis of 3-D steady state and turbulent flow through avortex tube was performed . We investigated the cold air mass flow rate, the cold air temperature, and thecold air heat transfer rate behavior of a vortex tube by utilizing seven straight nozzles and four inflowpressure conditions.
보텍스튜브 유동의 에너지분리 및 열역학특성에 관한 수치적 연구
최훈기(H.K. Choi),유근종(G.J. Yoo),임윤승(Y.S. Lim) 한국전산유체공학회 2018 한국전산유체공학회지 Vol.23 No.2
A vortex tube is a simple energy separating device which splits a compressed air stream into a cold and hot stream without any external energy supply or chemical reactions. In this article computational fluid dynamics analysis of a 3-D steady state and turbulent flow has been carried out through a vortex tube. The present research has focused on the energy separation and thermodynamic behavior of a vortex tube have been investigated. The temperature separation occurs because of the heat transfer from the central flow to the peripheral flow. Through the interpretation of the second law of thermodynamics, the generation of entropy shows that irreversible processes occur in the vortex tube.