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최재호(J.H.Choi),김광용(K.Y.Kim),지명석(M.S.Jie) 한국자동차공학회 1997 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1997 No.11_1
A numerical optimization process using a three-dimensional Naveer-Stokes solver has been developed to design a low noise automotive cooling fan. The conjugate gradient method is used to look for the search direction and the golden section method is used for the one dimensional search. Three variables concerned to stagger angle and sweep angle are chosen as design variables. To satisfy the constraints. exterior penalty functions ars employed. The final shape has been obtained after fifth changes of shape function in the present optimization using the object function defined as a ratio of production rate of turbulent kinetic energy to pressure head.<br/>