Influence of thermal convection on non-orthogonal stagnation point flow
Influence of thermal convection on non-orthogonal stagnation point flow
复制标题
热对流对非正交驻点流动的影响
DOI：
10.1016/s1290-0729(02)00031-5
复制
发表时间：
2003
影响因子：
4.5
通讯作者：
D. Boukari
中科院分区：
文献类型：
--
作者：
M. Amaouche;D. Boukari
本文研究了浮力诱导的对流和自由流以一定的入射角度撞击倾斜加热平板的相互作用。结果表明，这些机制既可以相互促进，也可以相互对立。在相反的情况下，无论攻角如何，都存在一个临界Grashof数，在该数之上，停滞点位于原点后面。然后分析了所得到的基本流动对三维扰动的线性稳定性。通过适当的标度，发现稳定性问题是由修正的Grashof数控制的，因此稳定性特征可以简化为水平加热平板上的Hiemenz流的稳定性特征。
This paper treats the interaction of a buoyancy induced convection flow and a free stream impinging at some angle of incidence on an inclined heated flat plate. It is shown that these mechanisms act to either reinforce or oppose one another. In the opposite case, a critical Grashof number exits above which the stagnation point is located behind the origin whatever the angle of attack. The linear stability of the resulting basic flow to three-dimensional disturbances are then analyzed. By using a proper scaling, it is found that the stability problem is governed by a modified Grashof number and therefore the stability characteristics can be reduced to those occurring in Hiemenz flow over a heated horizontal plate.