| 旋涡内流计算 |
| |
| 引用本文： | 卞荫贵,赵烈,于欣. 旋涡内流计算[J]. 空气动力学学报, 1988, 0(1) |
| |
| 作者姓名： | 卞荫贵 赵烈 于欣 |
| |
| 作者单位： | 中国科学院力学研究所(卞荫贵，赵烈)，中国科学院力学研究所(于欣) |
| |
| 摘 要： | 本文采用涡量-向量势表示的不可压缩三维流动的基本方程及其边界条件。针对小曲率弯管流,忽略主流方向的扩散项而使基本方程抛物化并利用流量守恒条件确定轴向压力分布。为避免横向速度向量散度不为零所带来的麻烦,本文提出两种计算方案。计算结果证明:用于求解三维抛物化方程组的这两种方案都是方便可行的。
|
| 关 键 词： | 旋涡流动 内流 计算流体力学 |
CALCULATION OF INTERNAL VORTEX FLOW |
| |
| Bian Yingui Zhao Lie Yu Xin. CALCULATION OF INTERNAL VORTEX FLOW[J]. Acta Aerodynamica Sinica, 1988, 0(1) |
| |
| Authors: | Bian Yingui Zhao Lie Yu Xin |
| |
| Abstract: | The flow in curved ducts has wide applications in engineering practice,such as heat exchangers,blade passages of turbomachinery,aircraft intakes etc.There are two similarity parameters in treating the curved duct flow.One is a measure of curvature by d/R,the other is Dean number k=d/R Re,where Re=W0 d/L.The numerical simulation is to solve the 3-D Navier-Stokes equations.In view of the primitive variables used,we employ the vorticity-vector potential formulation.Further simplification is needed in order to parabolize this set of equations along with the assumption of slightly curved duct to be analyzed.Two approaches of numerical solution are presented.It is shown that this way of solving the 3-D parabolized equations is feasible and is also advantageous to treat the internal vortex flow. |
| |
| Keywords: | vortex flow internal flow computational fluid dynamics. |
| 本文献已被 CNKI 等数据库收录！ |
|
