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| 河道平面二维恒定流水力数值模拟 | |
| 引用本文： | 曲少军. 河道平面二维恒定流水力数值模拟[J]. 人民黄河, 1994, 0(10) |
| 作者姓名： | 曲少军 |
| 作者单位： | 郑州黄委会水科院 |
| 摘 要： | 采用有限元法建立了一种适用于求解平面二维恒定流场的数学模型．并提出了一种处理固壁不可入边界条件的方法。方程离散具有通用和严格的特点，对合成后形成的非线性方程组采用牛顿迭代法求解，一般仅需４～７次选代便能获得稳态解。模型除经过各种典型情况的考题试算外，还用长江中游界牌河段的实测资料进行了验算，结果与实测值符合良好。 |
| 关 键 词： | 水力数值模拟，平面二维恒定流，有限元法，牛顿迭代法，河道 |
Plane and Two-dimensional Hydraulic Numerical Simulation of Constant Flow |
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| Qn Shaojun. Plane and Two-dimensional Hydraulic Numerical Simulation of Constant Flow[J]. Yellow River, 1994, 0(10) | |
| Authors: | Qn Shaojun |
| Abstract: | The finite-element method is used to develop a plane and two-dimensional numerical model forsolving plane and two-dimensional constant flow and to work out a method for dealing with criticalconditions with impervious banks. The equation separation is generally and strictly characterized. AsNewton iteration method is applied to the solution of synthesised non-linear system of equtions, steadystate solutions are often available with 4-7 iterations. Save for trial-and-error of different typicalScenarios, the model also verified the observed data obtained from the Jiepai section in the middle ofthe Yangtze River, and the results well coincides with the observed data. |
| Keywords: | two-dimensional flow field finite-element method non-linear system of equations |
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