An explicit Runge-Kutta method for unsteady rotor/stator interactionA quasi-three-dimensional rotor/stator analysis has been developed for blade-to-blade flows in turbomachinery. The analysis solves the unsteady Euler or thin-layer Navier-Stokes equations in a body-fitted coordinate system. It accounts for the effects of rotation, radius change, and stream-surface thickness. The Baldwin-Lomax eddy-viscosity model is used for turbulent flows. The equations are integrated in time using a four-stage Runge-Kutta scheme with a constant timestep. Results are shown for the first stage of the Space Shuttle Main Engine high pressure fuel turbopump. Euler and Navier-Stokes results are compared on the scaled single- and multi-passage machine. The method is relatively fast and the quasi-three-dimensional formulation is applicable to a wide range of turbomachinery geometries.
Document ID
19880040488
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Jorgenson, Philip C. E. (NASA Lewis Research Center Cleveland, OH, United States)
Chima, Rodrick V. (NASA Lewis Research Center Cleveland, OH, United States)