摘要
采用数值模拟的方法,研究了旋转衍生力在旋转受限层板中的分布规律.研究表明:由于冷却流体被加热,离心力随着旋转半径的增加而降低,近壁面处离心力较低,远离壁面区域离心力较高.y方向哥氏力在进出口区域影响较大,中间区域可以忽略.z方向哥氏力在进出口区域影响较大,中间段随转速和旋转半径的增加而缓慢增加.离心力衍生的浮升力在冲击区域附近加速流体流动,在其他区域的近壁面处,离心力衍生的浮升力阻碍流体流动,在远离壁面区域,离心力衍生的浮升力加速流体流动.在中间段,离心力和离心力衍生的浮升力起主导作用.
The distribution of forces induced by rotating limited lamilloy was researched by numerical simulation. It was emphasized that because the cool fluid was heated, the cen- trifugal force was reduced with the increase of the radius, and became lower near the wall, but higher far from the wall. The Coriolis force directed y was evident in the areas of inlet and outlet, but it could be ignored in the middle of lamilloy. The Coriolis force directed z was evident in the areas of inlet and outlet, and increased slowly with the increase of the ro- tation speed and radius. The buoyancy force caused by centrifugal force increased the veloci- ty of fluid near impact zoo, but in the other zoo and near the wall, it decreased the velocity of fluid, and far from the wall, it also increased the velocity of fluid. In the middle lamilloy, centrifugal force and buoyancy force caused by centrifugal force played a leading role.
出处
《航空动力学报》
EI
CAS
CSCD
北大核心
2015年第12期2934-2941,共8页
Journal of Aerospace Power
关键词
离心力
哥氏力
浮升力
层板
分布规律
centrifugal force
Coriolis force
buoyancy force
lamilloy
distribution
