On the problems of riblets as a drag reduction device. (English) Zbl 0667.49002
Authors’ summary: “Some recent experiments have shown that it is possible to reduce the drag of a body in a uniform flow by digging tiny ribs or ‘riblets’ on its skin. This paper deal with (i) the formulation of the problem into a distributed parameter optimum design problem and (ii) with its numerical solution by the finite element method and the techniques of optimal control. Some numerically optimal riblets ae presented.”
Reviewer: P.Neitaanmäki
MSC:
| 49J20 | Existence theories for optimal control problems involving partial differential equations |
| 76G25 | General aerodynamics and subsonic flows |
| 93C20 | Control/observation systems governed by partial differential equations |
| 49M15 | Newton-type methods |
Keywords:
fluid dynamic drag reduction; optimal shape design; distributed parameter optimum design; finite element method; optimal ribletsReferences:
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