DOI: 10.36347/sjet

Pages: 215-219

Aerodynamic analysis is carried out using superimposition of uniform flow with doublet over a spinning sphere. Analytical solutions of the pressure distribution and lift force over the spinning sphere are obtained based on Kutta-Joukowski theorem with the assumption that flow field around the spinning sphere may not influence the synthesized flow. The theoretical aerodynamic analysis reveals that the lift force over the spinning sphere is directly proportional to circulation, which coincides with the experimental results of Bearman and Harvey. It is found that the lift force over the spinning sphere is less than the spinning circular cylinder. The tangential velocity component on the surface of the spinning sphere yields a cubic equation, which is having one real and two conjugate imaginary roots