NUMERICAL INVESTIGATION ON FLOW BEHAVIOR AND ENERGY SEPARATION IN A MICRO-SCALE VORTEX TUBE

Abstract

There are a few experimental and numerical studies on the behaviour of icro-scale vortex tubes. The intention of this work is to investigate the nergy separation phenomenon in a micro-scale vortex tube by using the omputational fluid dynamic. The flow is assumed as steady, turbulent, ompressible ideal gas, and the shear-stress transport sst k-ω is used for odeling of turbulence phenomenon. The results show that 3-D CFD imulation is more accurate than 2-D axisymmetric one. Moreover, optimum old-mass ratios to maximize the refrigeration-power and isentropicefficiency re evaluated. The results of static temperature, velocity agnitude and pressure distributions show that the temperature-separation n the micro-scale vortex tube is a function of kinetic-energy variation and ir-expansion in the radial direction.

Keywords

Dates

  • Submission Date2012-03-16
  • Revision Date2012-07-10
  • Acceptance Date2012-10-24

DOI Reference

10.2298/TSCI120316206R

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