A Numerical Study on the Effect of Pitch Angle of Helical Nozzle on the Vortex Tube Performance Characteristics

- Journal title : The KSFM Journal of Fluid Machinery
- Volume 19, Issue 1, 2016, pp.11-17
- Publisher : Korean Fluid Machinery Association
- DOI : 10.5293/kfma.2016.19.1.011

Title & Authors

A Numerical Study on the Effect of Pitch Angle of Helical Nozzle on the Vortex Tube Performance Characteristics

Oh, Yeong Taek; Kim, Kuisoon;

Oh, Yeong Taek; Kim, Kuisoon;

Abstract

In this paper, a numerical analysis was performed to investigate the effect of the pitch angle of a helical nozzle on the performance characteristics of a vortex tube. Three-dimensional numerical simulation has been performed with standard turbulence model by using FLUENT 13.0. The effect of the pitch angle of helical nozzle was described in term of . A CFD analysis was performed on , , , . In order to realize the influence of on performances of the vortex tube. Computation results were expressed by the graph and radial profiles of axial velocity and swirl velocity. The results showed that which improves energy separation capacity of vortex tube was at , 0.5 and at . Besides, It was confirmed that the results were closely related to axial velocity and swirl velocity.

Keywords

Axial Velocity;Cold Gas Mass Fraction;Energy Separation;Helical Nozzle;Pitch Angle;Swirl Velocity;Vortex Tube;

Language

Korean

References

1.

Ranque, M. G., 1933, "Experiences Sur La Detente Giratoire Avec Production Simulanees D'un Echappement D'air chaud Et D'un Echappement d'air Froid," J Phys Radium, Vol. 7, No. 4, pp. 112-114.

2.

Hilsch, R., 1947, "The Use of the Expansion of Gases in a Centrifugal Field as Cooling Process," Rev Sci Instrum, Vol. 18, No. 2, pp. 108-113.

3.

Hartnett, J. P. and Eckert, E. R. G., 1957, "Experimental Study of the Velocity and Temperature Distribution in a High-velocity Vortex-type Flow," Trans ASME, Vol. 79, No. 4, pp. 751-758.

4.

Ahlborn, B. and Groves, S., 1997, "Secondary Flow in a Vortex Tube," Fluid Dynamics Research, Vol. 21, pp. 73-86.

5.

Kurosaka, M., 1982, "Acoustic Streaming in Swirling Flow and the Ranque-Hilsch (Vortex-Tube) Effect," J. Fluid Mech., Vol. 124, pp. 139-172.

7.

Gao, C. M., Bosschaart, K. J., Zeegers, J. C. H., and De Waele, A. T. A. M., 2005, "Experimental Study on a Simple Ranque-Hilsch Vortex Tube," Cryogenics, Vol. 45, pp. 173-183.

8.

Nimbalkar, S. U. and Muller, M. R., 2009, "An Experimental Investigation of the Optimum Geometry for the Cold End Orifice of Vortex Tube," Applied Thermal Engineering, Vol. 29, pp. 509-514.

9.

Kirmaci, V. and Uluer, U., 2009, "An Experimental Investigation of the Cold Mass Fraction, Nozzle Number, and Inlet Pressure Effects on Performance of Counter Flow Vortex Tube," J. Heat Transfer ASME, Vol. 131.

10.

Skye, H. M., Nellis, G. F., and Klein, S. A., 2006, "Comparison of CFD Analysis to Empirical Data in a Commercial Vortex Tube," Int. J Refrigeration, Vol. 29, pp. 71-80.

11.

Aljuwayhel, N. F., Nellis, G. F., and Klein, S. A., 2005, "Parametric and Internal Study of the Vortex Tube using a CFD Model," Int. J Refrigeration, Vol. 28, pp. 442-450.

12.

Upendra Behera, Paul, P. J., Kasthurirengan, S., Karunanithi, R., Ram, S. N., Dinesh, K., and Jacob, S. 2005, "CFD Analysis and Experimental Investigation Towards Optimizing the Parameters of Ranque-Hilsch Vortex Tube," Int. J. Heat Mass Transfer, Vol. 48, pp. 1961-1973.

13.

Rafiee, S. E. and Rahimi, M., 2013, "Experimental study and three-dimensional (3D) computational fluid dynamics (CFD) analysis on the effect of the convergence ratio, pressure inlet and number of nozzle intake on vortex tube performance-Validation and CFD optimization," Energy, Vol. 63, pp. 195-204.

14.

Kumar, N. and Malipatil, A. S., 2014, "CFD Analysis of Vortex Tube for Various Cross Sectional Nozzles," IJRASET, Vol. 2, Issue X, pp. 291-297.

15.

Pourmahmoud, N., Hassanzadeh, A., Moutaby, O., and Bramo, A., 2012, "Computational Fluid Danamics Analysis of Helical Nozzles Effects on the Energy Separation in a Vortex Tube," Thermal science, Vol. 16, No. 1, pp. 151-166.

16.

Pourmahmoud, N., Hassanzadeh, A., and Moutaby, O., 2012, "Numerical Analysis of the Effect of Helical Nozzles Gap on the Cooling Capacity of Ranque-Hilsch Vortex Tube," International journal of refrigeration, Vol. 35, pp. 1473-1483.

17.

Pourmahmoud, N., Jahangiramini, A., and MIzadi, A., 2013, "Optimization of Low Pressure Vortex Tube via Different Axial Angles of Injection Nozzles," International journal of engineering, Vol. 26, No. 10, pp. 1255-1266.