| 离心泵四面体网格质量衡量准则及优化算法 |
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| 引用本文： | 董亮,刘厚林,谈明高,路明臻,王勇,王凯.离心泵四面体网格质量衡量准则及优化算法[J].西安交通大学学报,2011,45(11):100-105. |
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| 作者姓名： | 董亮 刘厚林 谈明高 路明臻 王勇 王凯 |
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| 作者单位： | 江苏大学流体机械工程技术研究中心,212013,江苏镇江 |
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| 基金项目： | 国家杰出青年基金，国家自然科学基金，江苏省2010年研究生创新计划资助项目 |
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| 摘 要： | 针对网格优化过程中边界网格质量难以控制的问题,提出一种新的网格优化算法.通过数值计算分析了不同质量衡量准则对劣质单元及其单元形状变化评判效果的等价性问题,对各衡量准则所耗费的时间进行了对比,在此基础上选用一种最优的衡量准则推导出了错误函数,并将该函数作为基于优化光顺的目标函数,目标函数中包含有考虑边界网格质量和内部网格质量的函数项,且为函数项添加了一个权重系数,从而实现了边界网格单元质量的控制.经某离心泵叶轮算例验证表明:优化后网格单元质量系数趋于0的劣质单元全部被消除,网格的整体质量得到了显著提高;随着权重系数的增加,边界的平均网格质量有所提高.
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| 关 键 词： | 离心泵 网格优化 单元质量衡量准则 四面体网格 |
Quality Measurement Criteria and Optimization Algorithm of Tetrahedral Mesh for Centrifugal Pumps |
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| DONG Liang,LIU Houlin,TAN Minggao,LU Mingzhen,WANG Yong,WANG Kai.Quality Measurement Criteria and Optimization Algorithm of Tetrahedral Mesh for Centrifugal Pumps[J].Journal of Xi'an Jiaotong University,2011,45(11):100-105. |
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| Authors: | DONG Liang LIU Houlin TAN Minggao LU Mingzhen WANG Yong WANG Kai |
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| Institution: | DONG Liang,LIU Houlin,TAN Minggao,LU Mingzhen,WANG Yong,WANG Kai(Research Center of Fluid Machinery Engineering and Technology,Jiangsu University,Zhenjiang,Jiangsu 212013,China) |
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| Abstract: | A new mesh optimization algorithm was proposed to control boundary mesh quality in the mesh optimization.Calculations were performed to analyze the ability of seven methods to distinguish four kinds of poor-quality elements and their effects on the equivalent change of element shape,and compare the time each method costs.Then an error function was derived from an optimal measurement criterion.The error function was adopted as the objective function of the optimization-based smoothing.In the objective functi... |
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| Keywords: | centrifugal pump mesh optimization element quality measurement criteria tetrahedral mesh |
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