| NUMERICAL SIMULATION OF TURBULENT JETS WITH LATERAL INJECTION INTO A CROSSFLOW |
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| 作者姓名： | GUO Ting-ting LI Shao-hua |
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| 作者单位： | GUO Ting-ting，LI Shao-hua Department of Energy and mechanical Engineering，Northeast Dianli University，Jilin 132012，China，XU Zhong School of Energy and Power Engineering，Xi’an Jiaotong University，Xi’an 710049，China |
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| 摘 要： | 1. INTRODUCTION The interaction of jets with crossflow generates complex flow fields which exist in a variety of industrial applications, e.g. internal film cooling of turbine blades, dilution air jets in combustion chambers, jet from V/STOL aircraft in transition flight. Systematic experimental, theoretical and numerical investigations of the flow fields began several decades ago, where the parameters studied include the jet injection angel, the jet-to-crossflow velocity ratio, the jet …
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| 关 键 词： | 狂暴射流 紊流模型 数字模拟 流场 |
| 收稿时间： | 2005-02-21 |
NUMERICAL SIMULATION OF TURBULENT JETS WITH LATERAL INJECTION INTO A CROSSFLOW |
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| GUO Ting-ting,LI Shao-hua,XU Zhong.NUMERICAL SIMULATION OF TURBULENT JETS WITH LATERAL INJECTION INTO A CROSSFLOW[J].Journal of Hydrodynamics,2006,18(3):319-323. |
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| Authors: | GUO Ting-ting LI Shao-hua XU Zhong |
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| Institution: | 1. Department of Energy and mechanical Engineering, Northeast Dianli University, Jilin 132012, China;2. School of Energy and Power Engineering, Xi''an Jiaotong University,Xi''an 710049,China;1. Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing 100084, China;2. GE R&D Center, Shanghai, China;1. Centre de Développement des Energies Renouvelables, BP. 62 Route de l’Observatoire, 16340, Bouzaréah, Alger, Algérie;2. Laboratoire de Physique Energétique, Université Mentouri Constantine, 25000, Algérie;1. State Key Laboratory for Strength and Vibration of Mechanical Structures, Shaanxi Engineering Laboratory for Vibration Control of Aerospace Structures, School of Aerospace, Xi''an Jiaotong University, 710049, Xi''an, People''s Republic of China;2. State Key Laboratory of High Temperature Gas Dynamics, Institute of Mechanics, Chinese Academy of Sciences, 100190, Beijing, China;3. Xi''an Modern Control Technology Research Institute, 710065, Xi''an, People''s Republic of China;4. Tongji University, 200092, Shanghai, People''s Republic of China |
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| Abstract: | In this paper, Numerical simulations of mean velocity and turbulent kinetic energy fields are presented for three-dimensional lateral jet in crossflow, at the injection angles of ?60° and ?30°. The RNG k-? turbulence model, with the two-layer wall function method, is adopted to simulate the characteristics of this flow at the jet-to-crossflow velocity ratios, 1, 2 and 4. The results show that the injection angle and jet-to-crossflow velocity ratio can change the flow fields, and the range upstream affected by jet injected laterally increase and the curvature of jet trajectories varies along the flow direction. Furthermore, the separation events in the lee of the jet exit and behind the jet bending-segment have been found, and the mechanisms of two vortex systems are analyzed. |
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| Keywords: | turbulent jet turbulence model numerical simulation flow field |
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