Accession Number : ADA290421

Title :   Development of a Rotary Wing Navier-Stokes CFD Code Based on TLNS3D Code.

Descriptive Note : Final rept. 30 Sep 92-31 Aug 94,

Corporate Author : HAMPTON UNIV VA

Personal Author(s) : Hu, Hong

PDF Url : ADA290421

Report Date : SEP 1994

Pagination or Media Count : 38

Abstract : This report documents the development of a multi-grid Navier-Stokes code for rotary wing calculations, TLNS3DR. The TLNS3DR is based on the fixed-wing TLNS3D code by adding a rotation term and making necessary modifications on boundary conditions. The TLNS3D code solves the thin-layer Navier-Stokes equations using an explicit multistage Runge-Kutta type of time stepping with multigrid method. The TLNS3DR code reformulates the TLNS3D code in the rotor blade-fixed moving frame of reference and solves relative motion of fluids. In this report, the formulation of the Navier-Stokes equations in the moving frame of reference in terms of relative velocity is given. Several numerical examples are then presented. The results of rotor blade in hover calculated by the new TLNS3DR code seems quantitatively correct. The computation also shows that this multigrid code is efficient. (AN)

Descriptors :   *ROTARY WINGS, *COMPUTATIONAL FLUID DYNAMICS, *NAVIER STOKES EQUATIONS, VELOCITY, COMPUTER PROGRAMS, MODIFICATION, BOUNDARY LAYER, VORTICES, HELICOPTER ROTORS, ROTOR BLADES(ROTARY WINGS), FLOW FIELDS, HYDRODYNAMIC CODES, MACH NUMBER, SUBSONIC FLOW, WING BODY CONFIGURATIONS, AERODYNAMIC LIFT, RUNGE KUTTA METHOD, HOVERING, TRANSONIC FLOW, WING TIPS.

Subject Categories : Aerodynamics
      Fluid Mechanics
      Helicopters

Distribution Statement : APPROVED FOR PUBLIC RELEASE