期刊文献+

多尺度表面织构流体润滑问题的快速求解方法 被引量:9

Multiscale Method for Modeling Surface Texture Effects in Hydrodynamic Lubrication Regime
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摘要 为解决传统数值方法在求解多尺度织构流体润滑问题时计算速度慢、效率低、规模受限等问题,提出了有限细胞算法.针对简单的织构模型,通过对比有限元、流体力学和细胞算法的计算结果,验证了算法计算结果的准确性.通过对比不同计算规模下有限元和细胞算法的数值试验结果,发现新算法的计算速度和计算规模都有显著提升.对于大规模多尺度的织构模型,使用细胞算法进行求解,发现新算法的计算时间与网格数目成线性关系,表明细胞算法对于大规模织构问题具有良好的快速求解能力,并且为工程中类似的多尺度问题提供了具体的解决思路. Aiming at resolving slower computing rate and limited computing scale of the traditional numerical methods for multiscale surface texture hydrodynamic lubrication,the finite cell method(FCM) is proposed.The accurateness is verified by the comparisons among the conventional finite element method(FEM),computational fluid dynamic and FCM on simple texture model.The comparisons between FEM and FCM at different computational scale indicates that the computing rate is significantly improved and the computing scale is greatly enlarged.Several multiscale texture hydrodynamic models are solved with FCM,and the results reveal the linear relationship of computing time with mesh grids.
出处 《西安交通大学学报》 EI CAS CSCD 北大核心 2011年第5期119-126,共8页 Journal of Xi'an Jiaotong University
基金 国家重点基础研究发展规划资助项目(2009CB724404) 国家高技术研究发展计划资助项目(2008AA042508)
关键词 有限细胞算法 多尺度计算 表面织构 流体动压润滑 finite cell method multiscale computation surface texture hydrodynamic lubrication
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参考文献14

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