| Three-dimensional transient numerical simulation for gas exchange process in a four-stroke motorcycle engine |
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| 作者姓名： | 王春发 陈国华 罗马吉 杨万里 |
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| 作者单位： | School of Energy and Power Engineering，Huazhong University of Science and Technology，Wuhan 430074，China，School of Energy and Power Engineering，Huazhong University of Science and Technology，Wuhan 430074，China，School of Energy and Power Engineering，Huazhong University of Science and Technology，Wuhan 430074，China，School of Energy and Power Engineering，Huazhong University of Science and Technology，Wuhan 430074，China |
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| 摘 要： | INTRODUCTION In-cylinder flow characteristics during fuel in-jection and subsequent interactions with fuel sprays and combustion are important effect on engine per-formance and exhaust emissions of an engine(Floch et al.,1998;Kim et al.,1999).Four key parameters control the flow field in an engine:the mean flow components,the stability of the mean flow,the tem-poral turbulence evolution during the intake and compression strokes,and the mean velocity near the spark gap at the time of ignit…
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| 关 键 词： | 三维空间 数字模拟 气体交换 内燃机 动态特性 |
| 收稿时间： | 2005-04-08 |
| 修稿时间： | 2005-08-03 |
Three-dimensional transient numerical simulation for gas exchange process in a four-stroke motorcycle engine |
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| Wang Chun-fa,Chen Guo-hua,Luo Ma-ji,Yang Wan-li.Three-dimensional transient numerical simulation for gas exchange process in a four-stroke motorcycle engine[J].Journal of Zhejiang University Science,2005,6(10):1137-1145. |
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| Authors: | Wang Chun-fa Chen Guo-hua Luo Ma-ji Yang Wan-li |
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| Institution: | (1) School of Energy and Power Engineering, Huazhong University of Science and Technology, 430074 Wuhan, China |
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| Abstract: | Three-dimensional transient numerical simulation of gas exchange process in a four-stroke motorcycle engine with a semi-spherical combustion chamber with two tilt valves was studied. Combination of the grid re-meshing method and the snapper technique made the valves move smoothly. The flow structure and pattern in a complete engine cycle were described in detail. Tumble ratios around the x-axis and y-axis were analyzed. Comparison of computed pressure with experimental pressure under motored condition revealed that the simulation had high calculation precision; CFD simulation can be regarded as an important tool for resolving the complex aerodynamic behavior in motorcycle engines. |
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| Keywords: | Motorcycle engine Gas exchange process Transient numerical simulation Dynamic grid generation |
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