Abstract
CAE technology is indispensable to present design & development in every industry. But because it is the main purpose that the CAE tools are used for grasp the phenomenon, it owes a good deal to expert engineers that in order to do the better design. In this context, optimization tools have started to get a lot of publicity as the ways to improve the situations. The optimization tools are used for not only finding the optimal solutions but also improve the system of design & development of its own. This report shows geometry optimization case studies in fluid and structure fields using 'modeFRONTIER'.