非牛顿流体沿竖直平板自然对流传热的计算研究

NUMERICAL INVESTIGATION OF NATURAL CONVECTION FORNONNEWTONIAN FLUIDS OVER A VERTICAL FLAT PLATE

非牛顿幂次流体沿竖直平板层流自然对流为非线性两点边值问题，其速度场与温度场需耦合求解。采用几种数值方法对该问题进行了计算，研究了各种普朗特数（Ｐｒ）及不同幂次流体对沿壁面平均努赛尔数（Ｎｕ）的影响变化，并与有关文献的结果进行了对比分析。

Laminar free convection heat transfer of nonNewtonian power law fluids over a vertical flat plate has been studied.It is a problem of nonlinear twopoint boundary values.The two system of partial differential equations for velocity and temperature are coupled and nonlinear.Three numerical methods are also used to calculate the problem.The effects of Prandtl numbers( Pr ) and various flow indexes on convection heat transfer( Nu ) have been discussed and the calculations are compared with each other and with the results of other papers.