CFD analysis of energy separation of vortex tube employing different gases, turbulence models and discretisation schemes

Thakare, Hitesh R.; Parekh, A. D.

doi:10.1016/j.ijheatmasstransfer.2014.06.083

Cited by 48 publications

(19 citation statements)

References 17 publications

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“…In contrast to this, Khazei et al (Khazaei, Teymourtash, & Jafarian, 2012) observed higher energy separation for gases, with lower molecular weight and high specific heat. The energy separation (Thakare & Parekh, 2014) increases with increase in thermal diffusivity and thermal conductivity. The typical temperature separation for few gases is as shown in Fig.…”

Section: Effect Of Working Fluidsmentioning

confidence: 98%

“…In addition, various other fluids like water (Balmer, 1998), monoatomic (Linderstr0m-Lang, 1965Gulyaev, 1966), diatomic (Baker, 1956;Aydin & Baki, 2006;Kirmaci, 2009;Agarwal, Naik, & Gawale, 2014), tri-atomic gases, twophase fluids (Collins & Lovelace, 1979;Takahama, Kato, & Yokosawa, 1979), mixtures of gases, steam and organic and inorganic refrigerants (Han, et al, 2013) have been used. Numerical studies (Farouk, Farouk, & Gutsol, 2009;Pinar, Uluer, & Kırmaci, 2009;Polat & Kirmaci, 2011;Khazaei, Teymourtash, & Jafarian, 2012;Baghdad, Ouadha, & Addad, 2012;Thakare & Parekh, 2014) are also available with different fluids mentioned above in the literature. Figure 13 shows the frequency of use of various fluids, it can be seen that majority of research has been performed on air as working fluid.…”

Section: Effect Of Working Fluidsmentioning

confidence: 99%

“…Few models were successfully captured flow phenomenon and occurrence of secondary flow, stagnation point, hot and cold separation etc. Yet the clear understanding of the phenomenon (Liu & Liu, 2014;Bovand M. , Valipour, Eiamsa-ard, & Tamayol, 2014;Bovand M. , Valipour, Dincer, & Tamayol, 2014;Alekhin, Bianco, Khai, & Noskov, 2015;Thakare & Parekh, 2014;Thakare, Monde, Patil, & Parekh, 2015) is still undefined. Nevertheless, these studies helped to understand the effect of all geometric and operating parameters on the performance of the vortex tube.…”

Section: Fig 15 Turbulence Models Used For Vortex Tube Analysismentioning

confidence: 99%

See 2 more Smart Citations

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 Working Fluidsmentioning

confidence: 98%

Section: Effect Of Working Fluidsmentioning

confidence: 99%

Section: Fig 15 Turbulence Models Used For Vortex Tube Analysismentioning

confidence: 99%

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Parametric Review of Ranque-Hilsch Vortex Tube

Devade¹,

Pise²

2017

AJHMT

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“…The following numerical studies are directly devoted to the problem of selecting a suitable turbulent model for the counter-flow vortex tubes. A two-dimensional axis-symmetrical model was used for various turbulence models and discretization schemes by Thakare [14]. It was found that the most suitable turbulence model was k-ε Standard.…”

Section: Introductionmentioning

confidence: 99%

Vortex Tube: A Comparison of Experimental and CFD Analysis Featuring Different RANS Models

2018

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Abstract. The Ranque-Hilsch vortex tube represents a device for both cooling and heating applications. It uses compressed gas as drive medium. The temperature separation is affected by fluid flow behaviour inside the tube. It has not been sufficiently examined in detail yet and has the potential for further investigation. The aim of this paper is to compare results of numerical simulations of the vortex tube with obtained experimental data. The numerical study was using computational fluid dynamics (CFD), namely computational code STAR-CCM+. For the numerical study, a threedimensional geometry model, and various turbulence physics models were used. For the validation of carried out calculations, an experimental device of the vortex tube of identical geometrical and operating conditions was created and tested. The numerical simulation results have been obtained for five different turbulence models, namely Standard k-ε, Realizable k-ε, Standard k-ω, SST k-ω and Reynolds stress model (RSM), were compared with experimental results. The most important evaluation factor was the temperature field in the vortex tube. All named models of turbulence were able to predict the general flow behaviour in the vortex tube with satisfactory precision. Standard k-ε turbulence model predicted temperature distribution in the best accordance with the obtained experimental data.

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“…In case of numerical investigations with different fluids, many researchers (Bezprozvannykh & Mottl, 1999;Farouk, Farouk, & Gutsol, 2009;Pinar, Uluer, & Kırmaci, 2009;Polat & Kirmaci, 2011;Khazaei, Teymourtash, & Jafarian, 2012;Baghdad, Ouadha, & Addad, 2012;Thakare & Parekh, 2014) have worked with variety of fluids. Farouk et al applied (Farouk, Farouk, & Gutsol, 2009) LES model for simulation of N 2 and He mixture.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of Flow Behavior in Vortex Tube for Different Gases

Devade¹,

Pise²,

Urade³

2017

MER

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The vortex tube is an energy separation device that separates compressed gas stream into a low and a high temperature stream. Present work reports the flow behavior inside the vortex tube for different commonly used fluids with varied properties like Air, He, N 2 , CO 2 and NH 3. Flow behavior investigation for three-dimensional short straight-diverging vortex tube is done with CFD code (ANSYS 16.0). Different turbulent models, standard k-ε, Realizable k-ε and RNG k-ε are tested. Realizable k-ε model was then used for analysis. Flow behavior of gases with varied multi-atomic number is analyzed and compared with literature. The effect on temperature for N 2 is found to be better, followed by He, CO 2 , Air and NH 3 . Energy separation for N 2 is 46 % higher than all other gases. Energy separation and flow behavior inside vortex tube is analyzed and compared with literature.

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CFD analysis of energy separation of vortex tube employing different gases, turbulence models and discretisation schemes

Cited by 48 publications

References 17 publications

Parametric Review of Ranque-Hilsch Vortex Tube

Parametric Review of Ranque-Hilsch Vortex Tube

Vortex Tube: A Comparison of Experimental and CFD Analysis Featuring Different RANS Models

Numerical Analysis of Flow Behavior in Vortex Tube for Different Gases

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