한국전산유체공학회:학술대회논문집
- 2003.08a
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- Pages.182-187
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- 2003
Numerical Analysis for the Performance of an Axial-flow Compressor with Three-Dimensional Viscous Effect
삼차원 점성 효과를 고려한 축류 압축기의 성능에 대한 수치해석
Abstract
Numerical analysis of three-dimensional vicous flow is used to compute the design speed operating line of a transonic axial-flow compressor. The Navier-Stokes equation was solved by an explicit finite-difference numerical scheme and the Baldwin-Lomax turbulence model was applied. A spatially-varying time-step and an implicit residual smoothing were used to improve convergence. Two-stage axial compressor of a turboshaft engine developed KARI was chosen for the analysis. Numerical results show reasonably good agreements with experimental measurements made by KARI. Numerical solutions indicate that there exist a strong shock-boundary layer interaction and a subsequent large flow separation. It is also observed that the shock is moved ahead of the blade passage at near-stall condition.
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