한국전산유체공학회지 (Journal of computational fluids engineering)
- 제2권2호
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- Pages.51-58
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- 1997
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- 1598-6071(pISSN)
비장착 엔진/나셀 형상에 대한 3차원 Euler 유동 해석
Calculations of 3D Euler Flows around an Isolated Engine/Nacelle
초록
A reliable computational solver has been developed for the analysis of three-dimensional inviscid compressible flows around a nacelle of a high bypass ratio turbofan engine, The numerical algorithm is based on the modified Godunov scheme to allow the second order accuracy for space variables, while keeping the monotone features. Two step time integration is used not only to remove time step limitation but also to provide the second order accuracy in a time variable. The multi-block approach is employed to calculate the complex flow field, using an algebraic, conformal, and elliptic method. The exact solution of Riemann problem is used to define boundary conditions. The accuracy of the developed solver is validated by comparing its results around the isolated nacelle in the cruise flight regime with the solution obtained using a commercial code "RAMPANT. "
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