| 直接计算压力场的Lattice Boltzmann模型 |
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| 引用本文： | 程永光,索丽生. 直接计算压力场的Lattice Boltzmann模型[J]. 水科学进展, 2001, 12(1): 45-50 |
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| 作者姓名： | 程永光 索丽生 |
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| 作者单位： | 河海大学水利水电学院, 江苏南京210098 |
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| 基金项目： | 国家自然科学基金资助项目(500090087). |
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| 摘 要： | 简要介绍了Lattice Boltzmann(LB)方法的基本原理和常用的二维LB模型,指出其压力场直接计算的优点,并给出一种改进的使压力计算更方便的LB模型,对恒定和非恒定圆柱绕流的压力场进行模拟,与文献中已有结果作了比较和分析,表明计算压力的LB方法具有正确、简单等优越性.
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| 关 键 词： | 流场 LatticeBoltzmann方法 模拟 压力 |
| 文章编号： | 1001-6791(2001)01-0045-06 |
| 收稿时间： | 2000-01-17 |
| 修稿时间： | 2000-01-17 |
Direct Calculation ofPressure by Lattice Boltzmann Model |
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| CHENG Yong-guang,SUO Li-sheng. Direct Calculation ofPressure by Lattice Boltzmann Model[J]. Advances in Water Science, 2001, 12(1): 45-50 |
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| Authors: | CHENG Yong-guang SUO Li-sheng |
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| Affiliation: | College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China |
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| Abstract: | The basics and the d2q9 (two-dimensional nine-point) model of thelattice Boltzmann method are introduced, and the advantage of its direct pressure calculation is demonstrated．A more efficient model for simulating pressure fields, namely d2q9p, an improved version of d2q9, is presented．Using the model, 2-D steady and unsteady viscous flows past a circular cylinder are simulated．Good agreement between results of the LB and those of other methods shows that LB method is a simple, efficient and accurate approach to simulate pressure fields． |
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| Keywords: | flow field Lattice Boltzmann method simulation pressure |
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