| 正交曲线坐标下一种有效的弯道河流数值模型 |
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| 引用本文： | 黄新丽,周晓阳,程攀.正交曲线坐标下一种有效的弯道河流数值模型[J].水动力学研究与进展(A辑),2007,22(3):286-292. |
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| 作者姓名： | 黄新丽 周晓阳 程攀 |
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| 作者单位： | 华中科技大学数学系,武汉,430074 |
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| 摘 要： | 选取跟踪河道中心线走向的正交曲线坐标系,提出此坐标下的BGK Boltzmann方程,由明渠水流中微、宏观变量之间的基本关系建立了一种有效的弯道河流数值模型。通过对弯道水槽试验进行数值模拟,结果表明模型有较好的模拟弯道水流的能力。
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| 关 键 词： | 正交曲线坐标系 BGK Boltzmann方程 弯道河流 水流控制方程 |
| 文章编号： | 1000-4874（2007）03-0286-07 |
| 修稿时间： | 2006-09-152006-12-25 |
An efficient numerical model for meandering rivers in the orthogonal curvilinear coordinates |
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| HUANG Xin-li,ZHOU Xiao-yang,CHENG Pan.An efficient numerical model for meandering rivers in the orthogonal curvilinear coordinates[J].Journal of Hydrodynamics,2007,22(3):286-292. |
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| Authors: | HUANG Xin-li ZHOU Xiao-yang CHENG Pan |
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| Affiliation: | Math. Department of Huazhong University of Science and Technology, Wuhan 430074, China |
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| Abstract: | BGK Boltzmann equation based on orthogonal curvilinear coordinates following the alignment of the river is deduced.Using basic relationships between the detailed velocity distribution and macroscopic variables sets up an efficient numerical model for meandering rivers.Applying this model,a numerical simulation of a model test of bend-flow was carried out and it shows that the proposed model has the capabilities to simulate meandering flow. |
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| Keywords: | orthogonal curvilinear coordinate system BGK Boltzmann equation meandering rivers governing equations for channel flow |
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