Fluid dynamic analysis of a Ranque-Hilsch vortex tube

Secchiaroli, A. and Ricci, R. and Montelpare, S. and D'Alessandro, V. (2009) Fluid dynamic analysis of a Ranque-Hilsch vortex tube. Il nuovo cimento C, 32 (2). pp. 85-88. ISSN 1826-9885

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Fluid dynamic analysis of a commercial, counter-flow Ranque-Hilsch Vortex Tube (RHVT), Exair 25 scfm, has been performed in this work both experimentally and numerically; in particular RHVT cooling power and temperature separation performances have been tested in both direct cooling employment (jet impingement) and indirect cooling employment (supplying cold plates). Experimental techniques, used in this work, revealed several difficulties to produce detailed information about velocity and temperature fields inside the tube and at both the exits. Hence numerical simulation of the flow inside the tube has been conducted using the commercial CFD code FLUENT 6.3.26. Compressible, turbulent, high swirling flow inside RHVT has been simulated by using both RANS and LES approaches. In particular several turbulence closures have been used in the RANS simulations and results have been compared with LES ones. Large Eddy Simulations have been performed by using Smagorinsky sub-grid model.

Item Type: Article
Uncontrolled Keywords: Turbulence simulation and modeling ; Eddy-viscosity closures; Reynolds stress modeling ; Large-eddy simulations
Subjects: 500 Scienze naturali e Matematica > 530 Fisica
Depositing User: Marina Spanti
Date Deposited: 25 Mar 2020 15:11
Last Modified: 25 Mar 2020 15:11
URI: http://eprints.bice.rm.cnr.it/id/eprint/16518

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