| 非惯性非正交曲线坐标系中的边界层方程 |
| |
| 引用本文： | 孙茂.非惯性非正交曲线坐标系中的边界层方程[J].航空学报,1996,17(2):208-212. |
| |
| 作者姓名： | 孙茂 |
| |
| 作者单位： | 北京航空航天大学流体力学研究所!北京，100083 |
| |
| 摘 要： | 应用张量分析方法将 N-S方程写于作非惯性运动的非正交曲线坐标系中 ,然后用匹配渐近展开法导出此坐标系中的边界层方程。消去压强项后 ,与惯性坐标系中的边界层方程相比 ,非惯性系中的边界层方程在 x1和 x2 方向的动量方程中分别只多了一哥氏力项 ,它们是由物体转动角速度的物面法向分量产生的 ,其它惯性力项均不进入边界层方程。方程中所含曲线坐标系的拉梅系数及其导数只需在物面上取值 ,物面曲率影响不进入边界层方程
|
| 关 键 词： | 非定常流 边界层方程 球面坐标 |
BOUNDARY LAYER EQUATIONS IN NONINERTIAL CURVILINEAR COORDINATE SYSTEM |
| |
| Sun Mao.BOUNDARY LAYER EQUATIONS IN NONINERTIAL CURVILINEAR COORDINATE SYSTEM[J].Acta Aeronautica et Astronautica Sinica,1996,17(2):208-212. |
| |
| Authors: | Sun Mao |
| |
| Institution: | Institute of Fluid Mechanics,Beijing University of Aeronautics and Astronautics, Beijing,100083 |
| |
| Abstract: | The boundary layer equations in a noninertial curvilinear coordinate system are derived using the technique of asymptotic expansion. As the pressure terms are eliminated from the first order boundary layer equations, only one Coriolis force term appears in the x 1 and x 2 momentum equations (they are due to the local normal component of the angular velocity of the moving body), while other inertial force terms do not enter the first order boundary layer equations |
| |
| Keywords: | unsteady flow boundary layer equations spherical coordinates |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《航空学报》浏览原始摘要信息 |
| 点击此处可从《航空学报》下载免费的PDF全文 |
