A parametric study on the performance of a Ranque-Hilsch vortex tube using a CFD-based approach

Pourmahmoud, Nader; Feyzi, Ashkan; Orang, Ali Atashbar; Paykani, Amin

doi:10.1051/meca/2014085

Cited by 2 publications

(2 citation statements)

References 18 publications

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“…Effect of L/D ratio was analysed numerically by (Behera U. , Paul, Dinesh, & Jacob, 2008;Dincer, Tasdemir, Baskaya, & Uysal, 2008;Ameri & Behnia, 2009;Bramo & Pourmahmoud, 2010;Pourmahmoud & Bramo, 2011;Kandil & Abdelghany, 2015;Pourmahmoud, Feyzi, Orang, & Paykani, 2015;Rafiee & Sadeghiazad, 2014;Linhart, Kalal, & Matas, 2005). Behera (Behera U. , Paul, Dinesh, & Jacob, 2008) has shown that increase in length, increases efficiency by 25% because of displacement of stagnation point.…”

Section: Effect Of L/d Ratiomentioning

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 L/d Ratiomentioning

confidence: 99%

Parametric Review of Ranque-Hilsch Vortex Tube

Devade¹,

Pise²

2017

AJHMT

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“…Another essential factor in evaluating the performance of a swirl flow pipe is its structural dimension parameters [17]. Pourmahmoud [18] showed the effect of swirl flow pipes with a tube diameter of 4 mm and tube lengths of 135 mm, 270 mm, and 350 mm on the internal fluid flow characteristics. The results showed that as the distance from the thermal outlet of the cyclone to the inlet increased, the return point of the cold flow was further away from the inlet, and the temperature difference between the hot and cold flows became larger resulting in a greater separation effect.…”

Section: Introductionmentioning

confidence: 99%

3D Numerical Simulation and Performance Analysis of CO2 Vortex Tubes

Wang

Xie

2021

Applied Sciences

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In view of the extensive application of swirl flow pipes (vortex tubes) in refrigeration systems, the parameters of swirl flow pipes were investigated to provide optimal cooling and heating conditions. Three-dimensional numerical simulations were carried out using available experimental data and models. The analysis verified that the heat pipe with a length of 175 mm performed better than the swirl flow pipe with a length of 125 mm, confirming experiments by Agrawal. Meanwhile, by comparing different pressures, it was found that in the single-nozzle swirl flow pipe, the greater the increase of pressure (0.1–1.0 MPa), the greater the burden on the vortex chamber and the more serious the wear is, which can be seen in the higher inlet pressure. In order to improve the durability of the swirl flow pipe, we suggest using a swirl flow pipe with more nozzles. Finally, according to the simulation results, with the rise of carbon dioxide pressure potential energy at the inlet, the cooling effect of the swirl flow is first increasing and then decreasing. When the swirl flow pipe is used as a refrigeration device to determine the minimum cooling temperature under the maximum pressure, the lowest temperature of the 125 mm swirl flow pipe was 252.4 K at 0.8 MPa, while the lowest temperature of the 175 mm swirl flow pipe was 246.0 K. Secondly, the distance from the inlet to the hot outlet of the swirl flow pipe had little effect on the cooling temperature and radial velocity, but increasing its distance increased the wall temperature of the swirl flow pipe because it increases the contact time between the airflow and the hot end of the tube wall. When the swirl flow pipe is used as a heat-producing device, increasing the tube length of the swirl flow pipe appropriately increases its maximum heat-producing temperature.

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A parametric study on the performance of a Ranque-Hilsch vortex tube using a CFD-based approach

Cited by 2 publications

References 18 publications

Parametric Review of Ranque-Hilsch Vortex Tube

Parametric Review of Ranque-Hilsch Vortex Tube

3D Numerical Simulation and Performance Analysis of CO2 Vortex Tubes

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