抄録
Making use of his approximate resistance integral, J.L. Hess tries to search low drag shape in turbulent region. Following his way, the authors try to obtain the condition to minimize the resistance, propose and carry out computations by iteration method developed for this purpose making use of the inverse method solving the potential flow. The present report deals with two dimensional cylinders but the former with axi-symmetrical body. The results are similar in both cases, the optimum shape is nearly a parablola or a circular arc and has less resistance than the ellipe and parabolic cylinder.
