| 基于双向流固耦合的汽油机排气歧管热应力分析 |
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| 引用本文： | 邓帮林,刘敬平,杨靖,冯仁华,付建勤. 基于双向流固耦合的汽油机排气歧管热应力分析[J]. 内燃机学报, 2011, 0(6) |
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| 作者姓名： | 邓帮林 刘敬平 杨靖 冯仁华 付建勤 |
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| 作者单位： | 湖南大学先进动力总成技术研究中心;湖南大学汽车车身先进设计制造国家重点实验室; |
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| 基金项目： | 国家高技术研究发展计划(863计划)资助项目(2008AA116) |
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| 摘 要： | 联合AVL-Fire与ABAQUS软件,对一台汽油机排气歧管进行温度场、热应力分析.首先利用AVL-Fire对排气歧管做内外流场CFD分析,得到排气歧管内外表面的热边界条件,即流体温度及换热系数;然后把热边界条件映射到有限元面单元,并通过有限元技术与排气歧管实体单元相耦合,通过ABAQUS算出排气歧管温度场,并把壁面温度场返回作为下一轮CFD计算的边界条件,再重复前一轮计算.如此反复,直至符合精度要求,最后计算热应力.
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| 关 键 词： | 排气歧管 热边界 耦合 ABAQUS AVL-Fire |
Thermal Stress Analysis of Gasoline Engine Exhaust Manifold Based on Two-Way FSI |
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| DENG Bang-lin,,LIU Jing-ping,YANG Jing,FENG Ren-hua,FU Jian-qin. Thermal Stress Analysis of Gasoline Engine Exhaust Manifold Based on Two-Way FSI[J]. Transactions of Csice, 2011, 0(6) |
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| Authors: | DENG Bang-lin LIU Jing-ping YANG Jing FENG Ren-hua FU Jian-qin |
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| Affiliation: | DENG Bang-lin1,2,LIU Jing-ping1,YANG Jing1,FENG Ren-hua1,FU Jian-qin1,2(1.Research Center for Advanced Powertrain Technologies,Hunan University,Changsha 410082,China,2.State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body,China) |
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| Abstract: | Combined with the codes of AVL-Fire and ABAQUS,temperature and thermal stress analysis were carried out for the exhaust manifold of a gasoline engine.CFD analysis with AVL-Fire was made on inner and outer flow of the exhaust manifold to draw the thermal boundary conditions of the exhaust mani-fold's inner and outer surfaces,that is,the temperature and convection heat transfer coefficient.By map-ping the thermal boundary conditions to the shell element subsequently,and coupling with the solid ele-ment of the... |
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| Keywords: | exhaust manifold thermal boundary coupling ABAQUS AVL-Fire |
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