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A STUDY ON THE EFFICIENCY OF AERODYNAMIC DESIGN OPTIMIZATION IN DISTRIBUTED COMPUTING ENVIRONMENT  

Kim Y.J. (울산대학교 항공우주공학과)
Jung H.J. (울산대학교 항공우주공학과)
Kim T.S. (울산대학교 항공우주공학과)
Son C.H. (울산대학교 기계자동차공학부)
Joh C.Y. (울산대학교 항공우주공학과)
Publication Information
Journal of computational fluids engineering / v.11, no.2, 2006 , pp. 19-24 More about this Journal
Abstract
A research to evaluate the efficiency of design optimization was carried out for aerodynamic design optimization problem in distributed computing environment. The aerodynamic analyses which take most of computational work during design optimization were divided into several jobs and allocated to associated PC clients through network. This is not a parallel process based on domain decomposition in a single analysis rather than a simultaneous distributed-analyses using network-distributed computers. GBOM(gradient-based optimization method), SAO(Sequential Approximate Optimization) and RSM(Response Surface Method) were implemented to perform design optimization of transonic airfoils and evaluate their efficiencies. dimensional minimization followed by direction search involved in the GBOM was found an obstacle against improving efficiency of the design process in the present distributed computing system. The SAO was found fairly suitable for the distributed computing environment even it has a handicap of local search. The RSM is apparently the most efficient algorithm in the present distributed computing environment, but additional trial and error works needed to enhance the reliability of the approximation model deteriorate its efficiency from the practical point of view.
Keywords
design optimization; distributed computing; response surface method; sequential approximate optimization; gradient-based optimization method;
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