축류송풍기의 삼차원 유동장 해석

DOI QR코드

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김광용;김정엽;정덕수
Kim, Gwang-Yong;Kim, Jeong-Yeop;Jeong, Deok-Su

  • 발행 : 1997.04.01

초록

Computational and experimental investigations on the three-dimensional flowfield through an automotive cooling fan are carried out in this work. Steady, incompressible, three-dimensional, turbulent flow through a rotating axial-flow fan is analyzed with Reynolds averaged Navier-Stokes equations and standard k-.epsilon. turbulence model. The governing equations are discretized with finite-volume approximations in non-orthogonal curvilinear coordinates. Computational static pressures on the casing wall agree well with the experimental data which are measured in this work. And, they are sensitive to the change of tip clearance. The flowfield is not significantly affected by the thickness of the blade. The k-.omega. model gives the static pressure rise on the casing wall which is similar to that with the k-.epsilon. model.

키워드

축류송풍기;나이버-스톡스 방정식;k-e 난류모델;끝 틈새;유한체적법