Accession Number : ADA184784

Title :   Navier-Stokes Calculations of Hovering Rotor Flowfields,

Corporate Author : JAI ASSOCIATES INC MOUNTAIN VIEW CA

Personal Author(s) : Srinivasan,G R ; McCroskey,W J

PDF Url : ADA184784

Report Date : 19 Aug 1987

Pagination or Media Count : 24

Abstract : Unsteady, thin layer Navier-Stokes equations written in rotor coordinates are solved using a partially flux-split, implicit numerical algorithm to calculate the flow fields of a hovering rotor blade at subsonic and transonic conditions. Numerical results are in good agreement with experimental data for both nonlifting and lifting rectangular blades. For the lifting case, the rotor wake effects are modeled by applying a correction to the geometric angle of attack of the blades. Alternate methods of calculating the hovering rotor flowfields in blade-fixed mode that have the same circulation distribution as hovering blade are explored. All of the results presented in this paper are computed on a CRAY 2 supercomputer.

Descriptors :   *UNSTEADY FLOW, *ROTOR BLADES(ROTARY WINGS), *HOVERING, *NAVIER STOKES EQUATIONS, COMPUTATIONS, COMPUTER APPLICATIONS, SUPERCOMPUTERS, FLOW FIELDS, SUBSONIC CHARACTERISTICS, SUPERSONIC CHARACTERISTICS, ANGLE OF ATTACK, THINNESS, BOUNDARY LAYER

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE