An appropriate design of vortex-chamber geometry leads to better performance of the vortex tube. In this study, the computational fluid dynamics model created on the basis of an experimental model is a three-dimensional steady compressible model using a turbulence model to solve the equations. In this work, the parameters are focused on some geometrical parameters such as vortex-chamber radius, rounding-off edge radius, length of helical nozzle, and convergent helical nozzle intakes. Computational fluid dynamics results show that there are optimal values for the vortex chamber, rounding-off edge radii, and the convergence angle to achieve the maximum performance. In this paper, the effect of vortex-chamber radius and rounding-off edge radius variations on vortex tube performance have been analyzed in the ranges of 5.7 to 13 mm and , respectively. Furthermore, the effect of the length of helical nozzles and the convergence angle of helical nozzles on the performance are studied in the range of 28 to 5 deg. The maximum is 52.2 K for , , , and at the cold mass fraction of 0.3, which is higher than the basic model around 18.9%. Finally, the results obtained, particularly the temperature values, are compared with some available experimental data, which show good agreement.
Three-Dimensional Simulation of Fluid Flow and Energy Separation Inside a Vortex Tube
Journal of Thermophysics and Heat Transfer ; 28 , 1 ; 87-99
2014-01-08
13 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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