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Vol.20, No.3, 2020, pp. 219–224 |
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NUMERICAL INVESTIGATION OF THE GEOMETRY INFLUENCE ON THE AERODYNAMIC FIELDS OF THE FREE TURBULENT JETS Youcef Bouhamidi1, Ali Khelil1*, Hadj Meliani Mohamed2, Said Nechad1, Larbi Loukarfi1 1) Controls, Testing, Measurement and Simulation Mech. Laboratory, Hassiba Benbouali University of Chlef, ALGERIA 2) Lab. Theoret. Physics and Material Physics, LPTPM, Dep. of Mechanics, Faculty of Science, Hassiba Benbouali University of Chlef, ALGERIA email: hadjmeliani@univ-chlef.dz |
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Abstract The objective of this study is to develop a numerical simulation of a flow from diffusers with different geometries. The main applications of this kind of diffuser are in forced ventilation and air conditioning. A detailed evaluation of the results face other numerical and experimental studies in the turbulent regime was examined for a turbulent jet in free mode. The k-ε turbulence model and RSM turbulence model are used in this investigation. Several flow parameters are tested such as the diffuser geometry, the number and angle of inclination of the swirled vane located in the diffuser associated with the concept of the swirl number. A comparison of numerical results with those available in literature is presented. Most of these comparisons are in good agreement with experimental data. By comparing changes in the axial and radial temperature, the configuration having an inclination vane of 60° and a diffuser having 14 vanes is a better temperature stability and large development in the radial direction with a significant decrease in the axial direction. Keywords: swirling jet, vane angle, aerodynamic fields, thermal homogenization, thermal stability |
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full article (344 kB)
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