Numerical investigations on flow behaviour and energy separation in Ranque-Hilsch vortex tube

Behera, Upendra and Paul, PJ and Dinesh, K and Jacob, S (2008) Numerical investigations on flow behaviour and energy separation in Ranque-Hilsch vortex tube. In: International Journal of Heat and Mass Transfer, 51 (25-26). pp. 6077-6089.

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Abstract

A three-dimensional numerical model of Ranque–Hilsch vortex tube has been developed using the commercial CFD code (Star-CD) to analyze the flow parameters and energy separation mechanism inside the tube. Investigations have been done on the variation of fluid properties and flow parameters as the fluid particles progress in the flow field by tracking different particles exiting through the hot and cold end. Fluid properties like stagnation temperature, static temperature, static pressure and total pressure and flow parameters like axial, radial and swirl velocities are obtained along the axial and radial directions to understand the flow behaviour inside the tube. The presence of free vortex zone inside the tube also has been investigated. Possible energy transfer mechanisms are discussed and an estimate has been made on the magnitude of energy transfer from the cold end exit flow to hot end exit flow. Effects of secondary circulation and length of the tube on energy separation also have been evaluated.

Item Type:	Journal Article
Publication:	International Journal of Heat and Mass Transfer
Publisher:	Elsevier Science
Additional Information:	Copyright of this article belongs to Elsevier Science.
Keywords:	Ranque-Hilsch vortex tube;CFD simulation;Fluid properties; Stagnation point;Energy separation.
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	30 Oct 2009 09:45
Last Modified:	19 Sep 2010 05:00
URI:	http://eprints.iisc.ac.in/id/eprint/18131

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