| 离散格式及半隐式算法对直背式轿车外流场数值计算精度影响的研究 |
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| 引用本文： | 李广辉,康宁,李海峰.离散格式及半隐式算法对直背式轿车外流场数值计算精度影响的研究[J].车辆与动力技术,2006(1):32-36. |
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| 作者姓名： | 李广辉 康宁 李海峰 |
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| 作者单位： | 北京航空航天大学汽车工程系,北京,100083;北京航空航天大学汽车工程系,北京,100083;北京航空航天大学汽车工程系,北京,100083 |
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| 摘 要： | 以简化的直背式轿车模型为研究对象,以商用计算流体力学软件STAR—CD为工具,应用不同的离散格式对轿车外流场进行了数值模拟,通过与试验结果的对比,比较了各种离散格式对直背式轿车外流场数值模拟的适用性,同时对SIMPLE算法及其两种修正方法PISO算法和SIMPISO算法的计算精度的影响进行了研究.结果表明,QUICK格式比较适合汽车外流场的计算,SIMPISO算法计算精度比SIMPLE算法和PISO算法高.
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| 关 键 词： | 计算流体力学 直背式 离散格式 |
| 文章编号： | 1009-4687(2006)01-0032-05 |
| 修稿时间： | 2005年6月14日 |
The Influence Upon the Accuracy of the Numerical Calculation of the Fastback Cars with Different Discretization Scheme and Semi- Implicit Method |
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| LI Guang-hui,KANG Ning,LI Hai-feng.The Influence Upon the Accuracy of the Numerical Calculation of the Fastback Cars with Different Discretization Scheme and Semi- Implicit Method[J].Vehicle & Power Technology,2006(1):32-36. |
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| Authors: | LI Guang-hui KANG Ning LI Hai-feng |
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| Abstract: | The outflow field of a simplified fast back car were studied with numerical methods of different discretization scheme with the CFD code STAR-CD.Compared with the results of test,the applicability of different discretization schemes were compared.At the same time,the influences of SIMPLE algorithm and its two amendatory form PISO algorithm and SIMPISO algorithm were studied.It was confirmed that the QUICK scheme adapted to the numerical calculation of the outflow field of cars and SIMPISO algorithm was more accurate that the of SIMPLE algorithm and PISO algorithm. |
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| Keywords: | computational fluid dynamics fast back discretization scheme |
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