| 波动压力下汽油机缸内流场的瞬态数值模拟 |
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| 引用本文： | 王晓瑜,陈国华.波动压力下汽油机缸内流场的瞬态数值模拟[J].华中科技大学学报(自然科学版),2007,35(5):91-94. |
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| 作者姓名： | 王晓瑜 陈国华 |
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| 作者单位： | 华中科技大学,能源与动力工程学院,湖北,武汉,430074 |
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| 摘 要： | 在试验的基础上运用瞬态数值模拟方法,以四气门汽油机进气过程为例,对均值压力边界和瞬态波动压力边界下的进气过程进行了模拟计算及比较,结果表明进气压力波动对缸内的宏观气流运动影响较大,加强了缸内滚流运动强度的波动.而对缸内宏观热物性参量的影响较小,这些参量在压力波动的过程中没有出现大幅波动.
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| 关 键 词： | 汽油机 波动压力边界 流场特性 瞬态数值模拟 波动压力 四气门汽油机 缸内流场 瞬态数值模拟 boundary condition dynamic pressure flow intake cylinder simulation 进气过程 热物性参量 运动强度 滚流 加强 影响 气流运动 压力波动 结果 比较 |
| 文章编号： | 1671-4512(2007)05-0091-04 |
| 修稿时间： | 03 29 2006 12:00AM |
Transient simulation of cylinder intake flow under dynamic pressure boundary condition |
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| Wang Xiaoyu,Chen Guohua.Transient simulation of cylinder intake flow under dynamic pressure boundary condition[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2007,35(5):91-94. |
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| Authors: | Wang Xiaoyu Chen Guohua |
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| Institution: | College of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China |
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| Abstract: | Three dimensional transient simulation is an effective way to explore the transient intake flow characteristics under dynamic pressure boundary condition.The intake processes under two kinds of intake pressure boundary are simulated in the article,including the cycle averaged pressure boundary condition and the dynamic pressure boundary condition.Comparison between the two results shows that dynamic pressure boundary condition may have greate influence on the tumble motion of the intake flow,whereas have less influence on the macro thermo parameters of in-cylinder fluid field. |
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| Keywords: | gasoline engine dynamic pressure boundary condition flow field characteristic transient simulation |
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