Navier-Stokes simulation of rotor-body flowfield in hover using overset gridsA free-wake Navier-Stokes numerical scheme and multiple Chimera overset grids have been utilized for calculating the quasi-steady hovering flowfield of a Boeing-360 rotor mounted on an axisymmetric whirl-tower. The entire geometry of this rotor-body configuration is gridded-up with eleven different overset grids. The composite grid has 1.3 million grid points for the entire flow domain. The numerical results, obtained using coarse grids and a rigid rotor assumption, show a thrust value that is within 5% of the experimental value at a flow condition of M(sub tip) = 0.63, Theta(sub c) = 8 deg, and Re = 2.5 x 10(exp 6). The numerical method thus demonstrates the feasibility of using a multi-block scheme for calculating the flowfields of complex configurations consisting of rotating and non-rotating components.
Document ID
19950028561
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Srinivasan, G. R. (JAI Associates, Inc. Mountain View, CA, United States)
Ahmad, J. U. (JAI Associates, Inc. Mountain View, CA, United States)