Study of non-reactive isothermal turbulent asymmetric jet with variable density
| العنوان: | Study of non-reactive isothermal turbulent asymmetric jet with variable density |
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| المؤلفون: | O. Imine, B. Imine, Abdelkrim Liazid, M. Abidat |
| المصدر: | Computational Mechanics. 38:151-162 |
| بيانات النشر: | Springer Science and Business Media LLC, 2005. |
| سنة النشر: | 2005 |
| مصطلحات موضوعية: | Physics, Jet (fluid), Turbulence, Applied Mathematics, Mechanical Engineering, Nozzle, Computational Mechanics, Mixing (process engineering), Rotational symmetry, Thermodynamics, Ocean Engineering, Reynolds stress, Mechanics, Isothermal process, Physics::Fluid Dynamics, Computational Mathematics, Computational Theory and Mathematics, Turbulence kinetic energy |
| الوصف: | In the present study, the effects of inlet isothermal jet geometry on the mixing process with variable density have been investigated numerically. Four density ratios were considered, namely R ρ =7.2, 1.8,1 and 0.66 for He-air, CH4-air, Air-air and CO2-air mixtures respectively. The jets are produced through rectangular and elliptic nozzles with aspect ratio Ar = 2:1. The elliptic and rectangular nozzles have approximately the same exit area as the circular nozzle. A second-order Reynolds stress model (RSM) is used to investigate variable density effects in asymmetric turbulent jets. Comparative studies are presented for the calculations of the variables such as the longitudinal velocity, the longitudinal fluctuating velocity and the turbulent kinetic energy. The results indicate that the asymmetric geometry noticeably enhances mixing in comparison with the axisymmetric case. Typical phenomenon of 3D jets is observed. |
| تدمد: | 1432-0924 0178-7675 |
| DOI: | 10.1007/s00466-005-0727-9 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::8706150e0a7805889d91851b8285e18e https://doi.org/10.1007/s00466-005-0727-9 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi...........8706150e0a7805889d91851b8285e18e |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14320924 01787675 |
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| DOI: | 10.1007/s00466-005-0727-9 |