Unsteady flowfield simulation of ducted prop-fan configurationsA technique for the simulation of unsteady flows in and around complex rotating machinery is presented. Additional domain decomposition mechanisms are introduced which extend the range of applicability of software developed for the time-accurate simulation of rotating machinery flowfields. The flow models uses the unsteady 3D Euler equations, discretized as a finite-volume method, utilizing a high-resolution approximate Riemann solver for cell interface flux definitions. Multiblock domain decomposition is used to partition the field radially, axially, as well as circumferentially into an ordered arrangement of blocks which exhibit varying degrees of similarity. A general high-order numerical scheme is applied to satisfy the geometric conservation law. Two configurations are presented - ducted single rotation prop-fan and a rotor-deswirl vane combination which form a single stage fan. Comparisons are made to other numerical solutions for these geometries and to available experimental data.
Document ID
19920044322
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Janus, J. M. (NASA Lewis Research Center Cleveland, OH, United States)
Horstman, Howard Z. (NASA Lewis Research Center Cleveland, OH, United States)
Whitfield, David L. (Mississippi State University Mississippi State, United States)