Numerical study of asymmetric and axisymmetric thermal jet with entropy generation concept

D. Belakhal; Kouider Rahmani; Amel Elkaroui Elkaroui; Syrine Ben Haj Ayech; Nejla Mahjoub Saïd; Bachir Imine

doi:10.15282/jmes.15.1.2021.01.0601

Authors

D. Belakhal University of science and technology of Oran- PO Box 1505 - El Mnaouer in the City of Oran- Algeria. Phone: +213699647576
Kouider Rahmani Research Laboratory Modeling Simulation and Optimization of Real Complex Systems, group: Mechanical Systems and New Energies at the University of Djelfa, Algeria
Amel Elkaroui Elkaroui LGM, National Engineering School of Monastir at the University of Monastir, Tunisia
Syrine Ben Haj Ayech LGM, National Engineering School of Monastir at the University of Monastir, Tunisia
Nejla Mahjoub Saïd LGM, Preparatory Institute for Engineering Studies at the University of Monastir, Tunisia
Bachir Imine Laboratory of Aeronautics and Propulsive Systems, University of science and technology of Oran, PO Box 1505, El Mnaouer in the City of Oran, Algeria

DOI:

https://doi.org/10.15282/jmes.15.1.2021.01.0601

Keywords:

Asymmetricgeometry, axisymmetric geometry, thermal jets, variable density, entropy generation

Abstract

In the current investigation, numerical study of a thermal jet of asymmetric (rectangular and elliptical) and axisymmetric (circular) geometry was investigated with variable density to verify the impact of the ratio of density and geometry on the generation of entropy. The central jet was brought to different temperatures (194, 293 and 2110 K) to obtain density ratios (0.66, 1 and 7.2) identical to a mixture jet ((Air-CO₂), (Air-Air) and (Air-He)), respectively. Solving the three-dimensional numerical resolution of the Navier Stocks for turbulent flow permanent enclosed on the turbulence model K-εstandard was made. The results acquired are compared with that carried out in previous experimental studies, where it was concluded that, the axisymmetric (circular) geometry increases the entropy generation.

References

V. Faivre, “Etude experimentale et numerique du controle actif de jets dans des chambres de combustion,” Institut National Polytechnique De Toulouse, 2003.

B. Imine, O. Imine, M. Abidat, A. Liazid, “Study of non-reactive isothermal turbulent asymmetric jet with variable density,” Computational Mechanics, vol. 38, no. 2, pp. 151–162, 2006, doi: 10.1007/s00466-005-0727-9.

J. Pagé, “Contribution à l’étude des jets turbulentsaxisymétriques à masse volumique variable,” Université d’Orléans., 1998.

M. Senouci, A. Bounif, “Simulation numérique d’un jet turbulent axisymétrique à masse volumique variable par le modele au second ordre (RSM),” MEC Industries, vol. 12, pp. 315–324, 2011, doi: 10.1051/meca/2011105.

A. Moutte, “Etude de jets turbulents à masse volumique variable : impact de la variation de masse volumique sur la structure fine et le mélange,” Ecole Centrale de Marseille, 2018.

B. Mesnier, “Études sur le développement de jets turbulents à masse volumique variable, à géométries axisymétrique et asymétrique,” Universite D'Orleans, 2001.

H. H. Assoum, J. Hamdi, K. Abed-Meraïm, M. El Hassan, A. Hammoud, A. Sakout, “Experimental investigation the turbulent kinetic energy and the acoustic field in a rectangular jet impinging a slotted plate,” Energy Procedia, vol. 139, pp. 398–403, 2017, doi: 10.1016/j.egypro.2017.11.228.

M. H. Gazzah and H. Belmabrouk, “Evaluation des Modèles de Turbulence dans un Jet Turbulent Débouchant dans un Co- courant d ’ Air : Concept de Génération d ’ Entropie,” International Journal of Science, Engineering and Technology, vol. 3, no. 2, pp. 84–88, 2015.

M. H. Gazzah and H. Belmabrouk, “Local entropy generation in co-flowing turbulent jets with variable density,” International Journal of Numerical Methods for Heat & Fluid Flow, vol. 24, no. 8, pp. 1679–1695, 2014, doi: 10.1108/HFF-02-2013-0055.

M. H. Gazzah and H. Belmabrouk, “Directed co-flow effects on local entropy generation in turbulent heated round jets,” Computers & Fluids, vol. 105, pp. 285–293, 2014, doi: 10.1016/j.compfluid.2014.09.037.

A. Elkaroui, M. H. Gazzah, N. M. Saïd, P. Bournot, G. Le Palec, “Entropy generation concept for a turbulent plane jet with variable density,” Computers & Fluids, vol. 168, pp. 328–341, 2018, doi: 10.1016/j.compfluid.2017.01.003.

A. Elkaroui, S. B. H. Ayech, M. H. Gazzah, N. M. Saïd, G. Le Palec, “Numerical study of local entropy generation in a heated turbulent plane jet developing in a co-flowing stream,” Applied Mathematical Modelling, vol. 62, pp. 605–628, 2018, doi: 10.1016/j.apm.2018.06.020.

M. Boussoufi, A. Sabeur-Bendehina, A. Ouadha, S. Morsli, M. El Ganaoui, “Numerical analysis of single and multiple jets,” The European Physical Journal Applied Physics, vol. 78, no. 3, 2017, doi: 10.1051/epjap/2017170039.

S. Morsli, A. Sabeur, M. El Ganaoui, “Numerical simulation of entropy generation in hydrogen-air burner,” Fluid Dynamics and Materials Processing, vol. 11, no. 4, pp. 342–353, 2015, doi: 10.3970/fdmp.2015.011.342.

S. Morsli, A. Sabeur, M. El Ganaoui, H. Ramenah, “Computational simulation of entropy generation in a combustion chamber using a single burner,” Entropy, vol. 20, no. 12, 2018, doi: 10.3390/e20120922.

S. Morsli, A. Sabeur, M. El Ganaoui, “Influence of aspect ratio on the natural convection and entropy generation in rectangular cavities with wavy-wall,” Energy Procedia, vol. 139, no. December, pp. 29–36, 2017, doi: 10.1016/j.egypro.2017.11.168.

F. Ries, Y. Li, A. Sadiki, “Entropy production in near-wall turbulent flow inside a generic air-to-air plate heat exchanger,” 2018.

J. Pirkandi, A. M. Joharchi, M. Ommian, “Thermodynamic and exergic modelling of a combined cooling, heating and power system based on solid oxide fuel cell,” Journal of Mechanical Engineering Science, vol. 13, no. 4, pp. 6088–6111, 2019.

A. Favre, L. S. . Kovasznay, R. Dumas, J. Gaviglio, M. Coantic, la turbulence en mécanique des fluides: bases théoriques et expérimentales, méthodes. 1976.

H. Sanders, B. Sarh, I. Gokalp, “Etude numérique des jets turbulents à température élevée,” Rev. Générale Therm., vol. 35, pp. 232–242, 1996.