Numerical Exploration of Thermal Radiation and Rotation Effects on the 3-Dimensional Flow of Cu-Water Nanofluid Over an Oscillating Flat Surface

摘要

AbstractIn this paper, effect of thermal radiation on the unsteady 3-dimensional flow of nanofluid (Cu-water) past a vertical flat surface is examined in rotating frame of reference. The surface is assumed to be executing harmonic oscillations about a constant mean velocity. By the use of appropriate transformations, governing equations and boundary conditions are obtained in dimensionless form. Due to non-availability of analytical methods for the solution of 3D boundary-layer equations, we have chosen to employ explicit finite difference method to obtain the solution of the set of equations, and utilized MATLAB to extract information about the profiles of velocity and temperature, skin-friction and rate of heat transfer. Von-Neumann stability analysis of this scheme is also done to ensure the accuracy of solutions and boundedness of errors. The results reveal that thermal radiation elevates the rate of heat transfer in primary direction whereas rotation has opposite influence on it.]]>