某平面流动的流速分布方程为ux=2y-y2,流体的动力粘度为μ=0.8X10-3Pa*s,在固壁处y=0。距壁面y=7.5cm处的粘性切应力τ为:
A.2X103Pa B.-32X10-3Pa C.1.48X10-3Pa D.3.3X10-3Pa正确答案C
某平面流动的流速分布方程为ux=2y-y2,流体的动力粘度为μ=0.8X10-3Pa*s,在固壁处y=0。距壁面y=7.5cm处的粘性切应力τ为:
A.2X103Pa B.-32X10-3Pa C.1.48X10-3Pa D.3.3X10-3Pa正确答案C