Effect of the angle of oblique stagnation-point flow impinging axisymmetrically on a vertical circular cylinder with mixed convection heat transfer

Governing equations in the boundary layer induced by a steady incompressible oblique stagnation-point flow axisymmetrically impinging on a vertical constant temperature cylinder along with mixed convection heat transfer due to buoyancy forces are reduced to ODEs using similarity transformations and are solved numerically. Assuming constant strength for the oblique flow and by changing the obliqueness angle alpha in between zero to 90 degrees, solution of equations' system has been repeated at any specific value of alpha in the states of assisting or opposing flow. Using the resulting data, the behaviour of the flow parameters like Nusselt number, situation of streamline Psi = 0 at incident point and other characteristics are found against the flow obliqueness angle. The results are presented for Reynolds numbers 0.1, 1, 10, and 100 and buoyancy parameter values of lambda = -1, 0, 1 in which the heat and flow mechanisms are special cases of opposing flow, no buoyancy flow, and assisting flow, respectively.