Flow and heat transfer over a permeable biaxial stretching/shrinking sheet in a nanofluid

This paper studies the biaxial boundary layer flow of a nanofluid past a stretching/shrinking sheet. A suitable similarity transformation simplifies the system of partial differential equations into a system of ordinary differential equations. The obtained system of the governing ordinary differential equations is then solved numerically by using the bvp4c function from MATLAB. The generated numerical results are presented graphically and discussed in the relevance of the governing parameters. Dual solutions are found as the sheet is shrunk in the horizontal direction. Stability analysis shows that the first solution is physically realizable whereas the second solution is not practicable.