Multigrid calculation of three-dimensional viscous cascade flowsA three-dimensional code for viscous cascade flow prediction has been developed. The space discretization uses a cell-centered scheme with eigenvalue scaling to weigh the artificial dissipation terms. Computational efficiency of a four-stage Runge-Kutta scheme is enhanced by using variable coefficients, implicit residual smoothing, and a full-multigrid method. The Baldwin-Lomax eddy-viscosity model is used for turbulence closure. A zonal, nonperiodic grid is used to minimize mesh distortion in and downstream of the throat region. Applications are presented for an annular vane with and without end wall contouring, and for a large-scale linear cascade. The calculation is validated by comparing with experiments and by studying grid dependency.
Document ID
19910069131
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Arnone, A. (Firenze, Universita Florence, Italy)
Liou, M.-S. (Florence Univ. Italy)
Povinelli, L. A. (NASA Lewis Research Center Cleveland, OH, United States)