| 柴油机气缸盖的热流耦合分析 |
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| 引用本文： | 陈煜,范秦寅,郭晨海,曹晓辉. 柴油机气缸盖的热流耦合分析[J]. 机械设计与制造, 2009, 0(7) |
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| 作者姓名： | 陈煜 范秦寅 郭晨海 曹晓辉 |
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| 作者单位： | 1. 江苏大学,汽车学院,镇江,212013
2. 日本大阪大学,工学部,吹田,5650871 |
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| 摘 要： | 对某柴油机气缸盖的热流体与热应力进行耦合分析.首先运用CFD(Computational FluidDynamics)分析软件SC/Tetra计算温度场及流场,然后将得到的节点温度映射到用于结构分析的网格,再用有限元分析软件进行结构的热应力计算.通过对结果的分析发现设计的气缸盖的缸盖鼻梁区温度偏高,且温度梯度较大,热应力集中,说明鼻梁区冷却效果差,易出现裂纹.因此该处为危险区域,应该视为重点研究对象.还发现水套进水口布置的不够合理,调整进水口布置将不但有利于降低第四缸处最高温度,还有利于改进鼻梁区冷却.
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| 关 键 词： | 气缸盖 热流耦合 温度 |
The analysis of thermal stress and thermal flow of cylinder head of diesel engine |
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| CHEN Yu,FAN Qin-yin,GUO Chen-hai,CAO Xiao-hui. The analysis of thermal stress and thermal flow of cylinder head of diesel engine[J]. Machinery Design & Manufacture, 2009, 0(7) |
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| Authors: | CHEN Yu FAN Qin-yin GUO Chen-hai CAO Xiao-hui |
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| Affiliation: | 1School of Automobile and Traffic Engineering Jiangsu University;Zhenjiang 212013;China;2School of Engineering;Osaka University;Osaka 5650871;Japan |
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| Abstract: | It analyze the thermal stress and thermal flow of cylinder head of diesel engine.The CFD(Computational Fluid Dynamics)software called SC/Tetra is used to calculate the thermal fluid field,and the node temperature data is mapped to the solid mesh elements.And then authors use finite element software to calculate the thermal stress.The results show that the temperature and temperature grade in the bridge of the cylinder head is higher than other areas.Therefore,the thermal stress focuses there.That means the ... |
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| Keywords: | Cylinder head Thermal fluid coupling Temperature |
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