抄録
<jats:p>In this paper, the change in energy dissipation due to a small hump on a body in a uniform steady flow is calculated. The result is used in conjunction with the variational methods of optimal control to obtain the optimality conditions for four minimum-drag problems of fluid mechanics. These conditions imply that the unit-area profile of smallest drag has a front end shaped like a wedge of angle 90°.</jats:p>
収録刊行物
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- Journal of Fluid Mechanics
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Journal of Fluid Mechanics 64 (1), 97-110, 1974-06-03
Cambridge University Press (CUP)