摘要
本文根据质点系的动量守恒、的量守恒和质量守恒原理，提出了一种简化的数值模拟途径．用此方法可以直接模拟任意断面形状的层流流速分布、流速剖面的发展变化过程和沿程阻力系数．该数值模拟方法计算简单快速，使收敛．本文用此方法计算了Ｈａｇｅｎ－Ｐｏｉｓｅｕｉｌｌｅ流动及其形成过程，上板突然启动的Ｃｏｕｅｔｔｅ流动的形成过程，还计算了正方形、矩形和三角形管道内的流速分布及其层流进口起始过渡段的阻力系数．
Based on the conservation principles of momentum, mass andenergy in the particle system, the author puts forward a simplified mathod that can be used to moded directly laminar flowby Numerals in this paper. By this method, several typicalflows are computed,Ruch as Hapen- poiseuille flow,Couatte flowthe under the condition of one plate moving suddenly, thevelocity distribution and the draf coefficient of entry lengthin the pipes of various shape.
出处
《长沙铁道学院学报》
CSCD
1994年第2期43-54,共12页
Journal of Changsha Railway University
关键词
层流
流体力学
流速分布
laminar flow, mechanics of fluid, relocity distribution
