원심회전차 내부유도장에 관한 수치해석적 연구

DOI QR코드

DOI QR Code

김성원;조강래
Kim, Seong-Won;Jo, Gang-Rae

  • 발행 : 1996.10.01

초록

The flow analysis method which had been developed for the numerical calculation of 3-dimensional, incompressible and turbulent flow within an axial compressor was extended to the flow field within centrifugal impeller. In this method based on the SIMPLE(Semi Implicit Method Pressure Linked Equations) algorithm, the coordinate transformation was adopted and the standard k-.epsilon. model using wall function was used for turbulent flow analysis. The calculated flow fields have agreed very well with measurement results. Especially, 3-dimensional and viscous flow characteristics including secondary flows, jet-wake flow and decreased pressure rise along impeller passage, which can't be predicted by inviscid Q3D calculation were predicted very reasonably.

키워드

밀폐형 원심회전차;반경형 깃;후류-제트;2차 유동;3차원 난류유동;표준 k-$\varepsilon$ 모델