Journal of computational fluids engineering (한국전산유체공학회지)

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
권호 표지

Computations of Supersonic Flow with Ristorcelli′s Compressible Turbulence Model

Ristorcelli의 압축성 난류 모형을 이용한 초음속 유동의 계산

  • 박창환 (한국과학기술원 항공우주공학과) ;
  • 박승오 (한국과학기술원 항공우주공학과)
  • Published : 2003.09.01
Download PDF
⟨ Previous Next ⟩

Abstract

Three-dimensional endwall flow within a linear cascade passage of high performance turbine blade is simulated with a 3-D Wavier-Stokes CFD code (MOSA3D), which is based on body-fitted coordinate system, pressure-correction and finite volume method. the endwall flow characteristics, including the development and generation of horseshoe vortex, passage vortex, etc. are clearly simulated, consistent with the generally known tendency The effects of both turbulence model and convective differencing scheme on the Prediction performance of endwall flow are systematically analyzed in the present paper. The convective scheme is found to have stronger effect than the turbulence modei on the prediction performance of endwall flow. The present simulation result also indicates that the suction leg of the horseshoe vortex continues on the suction side until it reaches the trailing edge.

Keywords

References

  1. Sarkar, S., Erlebacher, G.M., Hussaini, Y. and Kreiss, H.O., 'The analysis and modeling of dilatational terms in compressible turbulence,' J. Fluid Mech., 227, 473 (1991)
  2. Sarkar,S.,'The pressure-dilatation correlation in compressible flows,' Phys. Fluids A 4, 2674 (1992)
  3. Wi1cox,D.C.,'Dilatation dissipation corrections for advanced turbulence models,' AIAA J., vol.30, No.11, (1992), p.2639-2646
  4. Sarkar, S., 'The Stabilizing effect of compressibility in turbulent shear flow,' J. Fluid Mech., 282, 163 (1995)
  5. Vreman,A.W., Sandham,N.D. and Luo,K.H., 'Compressible mixing layer growth rate and turubulence characteristics,' J. Fluid Mech. 320, 235 (1996)
  6. Huang, P.G., Bradshaw, P. and Coakley, TJ., 'Turbulence models for compressible boundary layers,' AIAA J., vol.32, No.4, (1994), p.735-740
  7. Kim, M.H. and Park, S.O., 'Supersonic base flow predictions using second-moment closure models of turbulence,' CFD Journal, vol.6, no.4,(1998),p.561-576
  8. Ristocelli, J.R., 'A pseudo-sound constitutive relationship for the dilatational covariances in compressible turbulence,' J.Fluid Mech., 347, 77, (1997)
  9. Hamilton, H.H., Millman, D.R. and Greendyke, R.B., 'Finite-difference solution for laminar or turbulent boundary layer flow over axisymmetric bodies with ideal gas, CF4, or equilibrium air chemistry,' NASA TP-3271, (1992)
  10. Huang, P.G., Coleman, G.N. and Bradshaw, P., 'Compressilble turbulent channel flows: DNS results and modelling,' J. Fluid Mech., vol.305, (1995), p.185-218
  11. Herrin, J.L., Dutton, J.C. 'An Experimental investigation of the supersonic axisymmetric base flow behind a cylindrical afterbody,' Univ. of Illinois at Urbana-Champaign, UILU 91-4004, Urbana, IL, 1991