| 用格子Boltzmann方法研究波及其粘性实验 |
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| 引用本文： | 阎广武,邵显,胡守信.用格子Boltzmann方法研究波及其粘性实验[J].吉林大学学报(理学版),1996(4). |
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| 作者姓名： | 阎广武 邵显 胡守信 |
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| 作者单位： | 吉林大学数学系，北京应用物理与计算数学研究所 |
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| 摘 要： | 应用单松弛的ＢＧＫ型的ＬａｔｔｉｃｅＢｏｌｔｚｍａｎｎ方程（ＬＢＥ），模拟有粘性的一维小扰动波的传播．由格子气Ｂｏｌｔｚｍａｎｎ理论出发得到的小扰动方程的理论解与直接用ＬａｔｔｉｃｅＢｏｌｔｚｍａｎｎ方法得到的数值解，在相同条件下符合的很好．并用按均方差最小原则调整松弛因子τ的方法，给出了数值实验粘性系数，验证了ＬａｔｔｉｃｅＢｏｌｔｚｍａｎｎ理论中的τ－η曲线．
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| 关 键 词： | LatticeBoltzmann方程，BGK模型，格子气波，数值实验粘性 |
Investigations of Waves and Their Viscosity Experiments with LBM |
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| Yan Guangwu,Shao Xian,Hu Shouxin.Investigations of Waves and Their Viscosity Experiments with LBM[J].Journal of Jilin University: Sci Ed,1996(4). |
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| Authors: | Yan Guangwu Shao Xian Hu Shouxin |
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| Abstract: | Using a BGK-type Lattice Boltzmann method, this paperdeals with the problem of propagation of one dimensional small--perturbed waves. The results of LBM numerical simulations are in good agreement with those of theoretical formula derived from LBM. To check the theoretical r--V curve,the numerically experimental viscosity was calculated using the method of least squares. |
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| Keywords: | Lattice Boltzmann method BGK-type Lattice gas wave numerically experimental viscosity |
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