THERMAL SCIENCE

International Scientific Journal

COMPUTATIONAL FLUID DYNAMICS ANALYSIS OF THE INFLUENCE OF INJECTION NOZZLE LATERAL OUTFLOW ON THE PERFORMANCE OF RANQUE-HILSCH VORTEX TUBE

ABSTRACT
In this article computational fluid dynamics analysis of a three-dimensional compressible and turbulent flow has been carried out through a vortex tube. The standard k-ε turbulence model is utilized in order to simulate an axisymmetric computational domain. The numerical simulation has focused on the energy separation and flow field patterns of a somewhat nonconventional vortex tube, which is on the basis of creating an external hole at the end of each nozzle. According to the selected nozzles geometry, some of unfavorable phenomena such as shock wave, high pressure regions and appearing of unsymmetrical rotating flow patterns in the vortex chamber would be recovered significantly. In this way the physical parameters of flow field are derived under different both inlet mass flow rates and outlet pressures of nozzles hole (OPH). The results show that increasing OPH value enhanced the cooling capacity of machine in the most of operating conditions.
KEYWORDS
PAPER SUBMITTED: 2012-07-04
PAPER REVISED: 2012-12-14
PAPER ACCEPTED: 2013-01-03
PUBLISHED ONLINE: 2013-01-20
DOI REFERENCE: https://doi.org/10.2298/TSCI120704002P
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2014, VOLUME 18, ISSUE Issue 4, PAGES [1191 - 1201]
REFERENCES
  1. Ranque, G. J., Experiences on expansion in a vortex with simultaneous exhaust of hot air and cold air (in French), J. Phys.Radium, 7 (1933), 4, pp. 112-114
  2. Hilsch, R., The use of expansion of gases in centrifugal field as a cooling process (in German), Z. Naturforschung, 1 (1946), pp. 208-214
  3. Takahama, H., Studies on vortex uube, Bull. JSME, 8 (1965), pp. 433-440
  4. Ahlborn, B., Gordon, J., The vortex tube as a classical thermodynamic refrigeration cycle, J. Applied Phys., 88 (2000), 6, pp. 645-653
  5. Saidi, M. H., Valipour, M. S., Experimental modeling of vortex tube refrigerator. App. Therm. Eng. 23 (2003), pp. 1971-1980
  6. Singh, P. K. et. al., An experimental performance evaluation of vortex tube. IE (I) Journal.MC 84 (2004), pp. 149-153
  7. Behera, U. et. al., CFD analysis and experimental investigations towards optimizing the parameters of Ranque-Hilsch vortex tube, Int. J. Heat and Mass Trans., 48 (2005), 10, pp. 1961-1973
  8. Skye, H. M. et. al., Comparison of CFD analysis to empirical data in a commercial vortex tube. Int. J. Refrigeration, 29 (2006), 1, pp. 71-80
  9. Akhesmeh, S. et. al., Numerical study of the temperature separation in the Ranque-Hilsch vortex tube, Am. J. Eng. Appl. Sci., 1 (2008), 3, pp. 181-187
  10. Dincer, K. et. al., Modeling of the effects of length to diameter ratio and nozzle number on the performance of counter flow Ranque-Hilsch vortex tubes using artificial neural networks. Appl. Therm. Eng., 28 (2008), pp. 2380-2390.
  11. Dincer, K. et. al., Experimental investigation of the performance of a Ranque-Hilsch vortex tube with regard to a plug located at the hot outlet. Int. J. Refrigeration, 32 (2009), pp. 87-94
  12. Kirmaci, V., Optimization of counter flow Ranque-Hilsch vortex tube performance using Taguchi method, Int. J. Refrigeration, 32 (2009), 6, pp. 1487-1494
  13. Kirmaci, V., Uluer, O., An experimental investigation of the cold mass fraction, nozzle number, and inlet pressure effects on performance of counter flow vortex tube, J. Heat Trans., 131 (2009), 8, pp. 603-609
  14. Prabakaran, J., Vaidyanathan, S., Effect of diameter of orifice and nozzle on the performance of counter flow vortex tube, Int. J. Eng. Sci. and Tech., 2 (2010), 4, pp. 704-707
  15. Bramo, A. R., Pourmahmoud, N., Computational fluid dynamics simulation of length to diameter ratio effect on the energy separation in a vortex tube, Thermal Science, 15 (2011), 3, pp. 833-848
  16. Pourmahmoud, N. et. al., Computational fluid dynamics analysis of helical nozzles effects on the energy separation in a vortex tube, Thermal Science, 16 (2012), 1, pp. 151-166
  17. Pourmahmoud, N. et. al., Numerical analysis of the effect of helical nozzles gap on the cooling capacity of Ranque-Hilsch vortex tube, Int. J. Refrigeration, 35 (2012), 5, pp. 1473-1483
  18. Pourmahmoud, N. et. al., Numerical investigation of operating pressure effects on the performance of a vortex tube, Thermal Science, In Press.

© 2022 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence