粘弹性流体流经作依赖时间运动伸展面的三维流动及其传质问题

Time-Dependent Three-Dimensional Flow and Mass Transfer of an Elastico-Viscous Fluid Over an Unsteady Stretching Sheet

研究粘弹性流体流经伸展面时的三维边界层流动.假定伸展面的运动速度依赖于时间.进一步考虑了更高阶次化学反应对传质的影响.应用同伦分析法(HAM)进行计算.精确地分析了所得级数解的收敛性.用图形讨论了各参数变化对速度和浓度的影响.还给出了面传质数值的计算,将所得结果与前人的数值解进行了比较.

The three-dimensional boundary layer flow of an elastico-viscous fluid over a stretching surface was looked at.Velocity of the stretching sheet was assumed to be time-dependent.Effect of mass transfer with higher order chemical reaction was further considered.Computations were made by homptopy analysis method（HAM）.The convergence of the obtained series solutions was explicitly analyzed.The variations of embedding parameters on the velocity and concentration were graphically discussed.Numerical computations of surface mass transfer were reported.Comparison of the present results with the numerical solutions was also seen.