Application of the output dependent feature scaling in modeling and prediction of performance of counter flow vortex tube having various nozzles numbers at different inlet pressures of air, oxygen, nitrogen and argon

2011 ◽  
Vol 34 (6) ◽  
pp. 1387-1397 ◽  
Author(s):  
Kemal Polat ◽  
Volkan Kırmacı
Author(s):  
Hitesh Thakare ◽  
Ashok Parekh ◽  
Arif Upletawala ◽  
Bhushan Behede

2021 ◽  
Vol 850 (1) ◽  
pp. 012024
Author(s):  
Ravi Kant Singh ◽  
Achintya Kumar Pramanick ◽  
Subhas Chandra Rana

Abstract The present study intends to improve the performance of the Ranque-Hilsch counter flow vortex tube, analysed using computational fluid dynamics. In the axisymmetric 3-D, steady-state, compressible, and turbulent flow vortex tube, the air has been used as the working fluid. The ANSYS17.1 FLUENT software has been used with the standard º-ε turbulent model for different mass fraction of cold fluid and inlet pressure in the numerical simulation and validated with the experimental results. It is observed from the study that as the inlet chambers number increases from 1 to 2, there is a decrease of 7.8 % in the cold exit temperature of the vortex tube. However, insulating the double chamber vortex tube leads to a further reduction of 4.2% in the cold exit temperature. Therefore, it indicates that the overall decline in the cold exit temperature from one chamber non-insulated vortex tube to double chamber insulated vortex tube is 9.6%. In terms of cold exit temperature, it can be concluded that using a double inlet chamber vortex tube with insulation yields the optimum results.


2015 ◽  
Vol 127 ◽  
pp. 170-176
Author(s):  
Hitesh R. Thakare ◽  
Aniket Monde ◽  
Bhushan S. Patil ◽  
A.D. Parekh

Author(s):  
В.Н. Самохвалов

The change in air temperature along the axis of the expansion chamber in the zones of the nozzle inlet and the flow swirler in the direct-flow, counter-flow, three-flow and single-flow vortex tubes has been investigated. It has been established that in all cases, the cooling of air in the vortex tube occurs in the zone of the swirling device, and its heating - in the zone of unwinding of the flow. The change in air temperature in the axial zone along the length of the expansion chamber occurs due to heat exchange between the heating and cooling zones.


2014 ◽  
Vol 136 (8) ◽  
Author(s):  
P. A. Ramakrishna ◽  
M. Ramakrishna ◽  
R. Manimaran

An experimental study of a counter-flow Ranque–Hilsch vortex tube is reported here. Literature has been divided over the mechanism of energy transfer responsible for the temperature separation in the vortex tube. A black box approach is used to design experiments to infer the relative roles of heat transfer and shear work transfer in the counter-flow vortex tube. To this end, the stagnation temperature and the mass flow rates are measured at the inlet and the two outlets. In addition, pressure measurements at the stagnation condition and at the inlet section to the vortex tube were made. Based on these experiments, it is reasoned that the predominant mode of energy transfer responsible for temperature separation in a counter-flow vortex is the shear work transfer between the core and the periphery.


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