An Euler code designed for computing the unsteady, three-dimensional, transonic flow about single-rotating and counter-rotating propfans using dynamic blocked-grids is presented. The algorithm is a finite volume, flux-split, upwind, implicit scheme and solves the equations which have been written in a time-dependent curvilinear coordinate system. Relative motion of the blades for counter-rotating configurations is handled by requiring that grid lines be aligned after each discrete rotation of fore and aft rotor grid blocks. The method by which information is passed across block interfaces, as well as how downstream characteristic outflow boundary conditions which enforce simple radial equilibrium are implemented, is discussed. Comparisons of computed flow-field parameters and propfan performance with experimental data indicate good overall agreement between predictions and measurements.
Three-dimensional unsteady Euler solutions for propfans and counter-rotating propfans in transonic flow
Dreidimensionale instationaere Euler-Loesungen fuer Axialverdichter und gegenlaeufige Axialverdichter in transsonischen Stroemungen
AIAA-Papers ; Jun ; 1-14
1987
14 Seiten, 9 Bilder, 24 Quellen
Conference paper
English
A panel method for counter rotating propfans
AIAA | 1987
|A panel method for counter rotating propfans
Tema Archive | 1987
|Panel method for counter-rotating propfans
AIAA | 1991
|Panel method for counter-rotating propfans
NTRS | 1991
|