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Mixed convection in the stagnation-point flow over a vertical stretching sheet in the presence of thermal radiation

Manjunatha S., Gireesha B. J., Bagewadi C. S.

International Journal of Applied Mechanics and Engineering

2015

Vol. 20, no. 4

871--888

An unsteady two-dimensional stagnation-point mixed convection flow of a viscous, incompressible dusty fluid towards a vertical stretching sheet has been examined. The stretching velocity and the free stream velocity are assumed to vary linearly with the distance from the stagnation point. The problem is analyzed using similarity solutions. The similarity ordinary differential equations were then solved numerical by using the RKF-45 method. The effects of various physical parameters on the velocity profile and skin-friction coefficient are also discussed in this paper. Some important findings reported in this work reveal that the effect of radiation has a significant impact on controlling the rate of heat transfer in the boundary layer region.

Fluctuating flow of a third order fluid past an infinite plate with variable suction

Hayat T., Nadeem S., Pudasaini S. P., Asghar S.

Archives of Mechanics

2003

Vol. 55, nr 3

305-324

The two-dimensional flow problem of a third order incompressible fluid past an infinite porous plate is discussed when the suction velocity normal to the plate, as well as the the external flow velocity, varies periodically with time. The governing partial differential equation is of third order and nonlinear. Analytic solution is obtained using the series method. Expressions for the velocity and the skin friction have been obtained in a dimensionless form. The results of viscous and second order fluids can be recovered as special cases of this problem. Finally, several graphs are plotted and discussed.