CFD analysis and experimental investigations towards optimizing the parameters of Ranque–Hilsch vortex tube

Behera, Upendra; Paul, P.J.; Kasthurirengan, S.; Karunanithi, R.; Ram, Shobha Sundar; Dinesh, K.K.J. Ranga; Jacob, S.

doi:10.1016/j.ijheatmasstransfer.2004.12.046

Cited by 203 publications

(99 citation statements)

References 10 publications

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“…The discussion above presents mixed result, the similar results are available for nozzle geometries. Among all geometries tested, convergent spiral entry (Bovand, Rashidi, & Esfahani, 2016;Darokar, Borse, & Devade, 2012;Wu, Ding, Ji, Ma, & Ge, 2007), Archimedean spiral and helical nozzles (Behera U. , Paul, Dinesh, & Jacob, 2008;Ameri & Behnia, 2009;Pourmahmoud, Hassanzadeh & Moutaby, 2013;Alekhin, Bianco, Khai, & Noskov, 2015;Behera U. , et al, 2005;Piralishvili & Fuzeeva, 2005;Pourmahmoud, Jahangiramini, & Izadi, 2013;Rafiee & Sadeghiazad, 2014)are more efficient. The results are CMF dependent, certain operating conditions, show rise in separation, and fall for others.…”

Section: Effect Of Nozzle Number and Nozzle Geometry (Nn)mentioning

confidence: 99%

Parametric Review of Ranque-Hilsch Vortex Tube

Devade¹,

Pise²

2017

AJHMT

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Vortex tube is the device that separates pressurized fluid into hot and cold fluid streams simultaneously. The scientific community has done extensive experimental and theoretical studies since invention of vortex tube to augment the performance of the tube by varying geometrical and operational parameters; the paper deals with parametric review of all such work. The review takes into account effect of almost 14 parameters on performance of vortex tube. It includes developments in tube geometry like L/D ratio, number of nozzles; hot end valve angle and cold orifice diameter etc. are discussed along with different fluids and operational parameters like CMF and stagnation point etc. The focus of most of the theoretical and experimental studies was to investigate mechanism of thermal separation and geometry optimization. The main objective of this review is to discuss efforts made in order to enhance the refrigeration effect so that, missing links could help for future research.

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Section: Effect Of Nozzle Number and Nozzle Geometry (Nn)mentioning

confidence: 99%

Parametric Review of Ranque-Hilsch Vortex Tube

Devade¹,

Pise²

2017

AJHMT

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“…Aljuwayhel et al (2005) utilised a fluid dynamics model of the vortex tube to describe temperature separation phenomenon. Behera et al (2005) investigated the effect of the different types and number of nozzles on temperature separation in a counter-flow vortex tube by ways of CFD and experiment. Skye et al (2006) investigated a vortex tube experimentally and compared the results with a 2D CFD model.…”

Section: Figure 1 Schematic Drawing Of a Counter Flow Vortex Tubementioning

confidence: 99%

Entropy and exergy analysis of a Ranque-Hilsch vortex tube with two vortex chambers

Sepehrianazar

Khalilarya

2016

IJEX

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Abstract:In this paper, entropy and exergy of a vortex tube with two vortex chambers is studied. Computational fluid dynamics (CFD) analysis of a three-dimensional, steady state, compressible and turbulent flow is carried out through a vortex tube. The standard k-turbulence model is used to analyse highly rotating complex flow field. The entropy, inlet and outlet exergies, destruction of exergy and exergy efficiency are studied. Results show that for different inlet pressures, there is an optimum distance for placing second chamber to have maximum exergy efficiency. Placing second chamber at the axial interval of Z = 1.5-5 mm leads to have minimum cold temperature, maximum hot temperature and maximum exergy efficiency, in comparison with one chamber.

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“…5 A CFD model of the vortex tube was employed by Aljuwayhel et al 6 to understand the fundamental processes that cause the power separation inside the vortex tube. Behera et al 7 investigated the effect of the number of nozzles on energy separation both experimentally and using numerical CFD models. Skye et al 8 made a comparison between the performance predicted by a computational fluid dynamic (CFD) model and their experimental measurements using an available commercial vortex tube.…”

Section: Open Accessmentioning

confidence: 99%

CFD Analysis of Temperature Separation in a Convergent Vortex Tube

Rashidzadeh¹

2016

IPCSE

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The purpose of this paper is to investigate the effect of using a convergent hot tube on the vortex tube refrigeration capacity. The computational fluid dynamics (CFD) model used is a three-dimensional steady compressible model that utilizes the k-ɛ turbulence model. In this numerical research, different convergence angles of the hot tube (β=0°, 0.5°, 0.88°, 1°, 1.5°, and 2°) have been considered to analyze the vortex tube performance. The results showed that as the angle converges from the cylindrical model (β=0°), the cold temperature separation improves at the cold mass fractions greater than about 0.3, but increasing the angle more than 2° impairs the cold temperature separations compared to the cylindrical model, because of the secondary circulation development inside the vortex tube. Also, a successful validation has been carried out between some available experimental results and the present numerical model (for cylindrical vortex tube) IntroductionThe vortex tube is a simple device, without any moving parts, that separates a pressurized flow of air (or any inlet gas) into hot and cold streams. Compressed air enters tangentially into the vortex chamber, where it splits into two lower pressure streams, the peripheral and the inner vortexes. The hot stream rotates near the outer radiuses (near the wall) while the cold stream flows at the center of the tube. The hot outer layers of the compressed gas escape through the conical valve side at the end of the tube. The remaining gas returns in an inner vortex and leaves through the cold exit orifice located at the other end of the tube near the inlets. This behavior is schematically illustrated in Figure 1. There are various explanations for this behavior happened in the vortex tubes. One explanation is that, owing to centrifugal force, the outer air is under higher pressure than the inner air. So, the temperature of the outer layers is higher than that of the inner layers. Another explanation is that as both vortices have the same angular velocity and direction, the inner vortex loses angular momentum.

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CFD analysis and experimental investigations towards optimizing the parameters of Ranque–Hilsch vortex tube

Cited by 203 publications

References 10 publications

Parametric Review of Ranque-Hilsch Vortex Tube

Parametric Review of Ranque-Hilsch Vortex Tube

Entropy and exergy analysis of a Ranque-Hilsch vortex tube with two vortex chambers

CFD Analysis of Temperature Separation in a Convergent Vortex Tube

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