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On the problems of riblets as a drag reduction device
Author(s) -
Arumugam G.,
Pironneau O.
Publication year - 1989
Publication title -
optimal control applications and methods
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.458
H-Index - 44
eISSN - 1099-1514
pISSN - 0143-2087
DOI - 10.1002/oca.4660100203
Subject(s) - drag , reduction (mathematics) , finite element method , digging , flow (mathematics) , computer science , mechanics , mathematics , mathematical optimization , engineering , structural engineering , physics , geometry , archaeology , history
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 deals 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 are presented.