| 粘性不可压缩流体平面流动的有限差分解法 |
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| 引用本文： | 刘顺隆,程元龙,姜宗林. 粘性不可压缩流体平面流动的有限差分解法[J]. 哈尔滨工程大学学报, 1986, 0(3) |
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| 作者姓名： | 刘顺隆 程元龙 姜宗林 |
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| 作者单位： | 哈尔滨船舶工程学院船舶动力工程系(刘顺隆，程元龙)，哈尔滨船舶工程学院船舶动力工程系(姜宗林) |
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| 摘 要： | 本文使用上风差分格式求解了二维非定常粘性不可压缩流体非守恒的Navier-Stokes方程,讨论了相应的差分方程的精度、收敛性和人工粘性.发现当雷诺数增大时,使用非守恒型方程比守恒型方程易于收敛、更为适宜.本文还对壁面拐角上点的涡量计算提出了一种新的方法.以曲折流道内粘性流体的流动为例进行了数值计算,结果表明与实验结果具有较好的一致性.
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| 关 键 词： | 粘性流体 非定常流动 壁涡 差分方法 人工粘度 收敛性 |
Finite Difference Methods for Two Dimensional Viscous Incompressible Flow |
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| Liu Shunlong, Cheng Yuanlong ,Jiang Zonglin. Finite Difference Methods for Two Dimensional Viscous Incompressible Flow[J]. Journal of Harbin Engineering University, 1986, 0(3) |
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| Authors: | Liu Shunlong Cheng Yuanlong Jiang Zonglin |
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| Affiliation: | Dept. of Marine Power Eng. |
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| Abstract: | With a upwind difference schemes, the numerical solutions of Navier-Stokes equtions in nonconservative form are obtained for two dimensional viscous incompressible unsteady flow with rigid wall boundary.When Reynolds number is higher, it is found that numerical solutions with the nonconservative are converged more easily then the conservative ones.The accuracy convergence and artificial viscosity of the difference equations are discussed.A new method is proposed to calculate wall vorticity at the the point of corner.Numerical results for viscous flow in a curve passage show good agreement with experimental results. |
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| Keywords: | viscous fluid unsteady flow wall vorticity difference method artificial viscosity convergence |
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