Accession Number : ADP007698

Title :   The Application of a Navier Stokes CFD Method to Civil Engine Intake Flows,

Corporate Author : ROLLS ROYCE INC ATLANTA GA

Personal Author(s) : Birch, N. T. ; Kitchen, E. H.

Report Date : FEB 1992

Pagination or Media Count : 10

Abstract : Three-dimensional flows around civil engine intakes have been calculated by a Navier-Stokes method. The full Reynolds-averaged Navier-Stokes equations for viscous flow are solved by an explicit time-marching cell-centered finite-volume algorithm. To ensure numerical stability, Jameson's formulation of fourth-order and second-order smoothing is used. Second-order smoothing is switched on only in regions of strong pressure gradient such as shocks. The flow may be laminar or turbulent; turbulence is treated by a mixing-length eddy viscosity model. The algorithm is applied on a body-fitted C-type computational grid.

Descriptors :   *THREE DIMENSIONAL FLOW, *AIR INTAKES, ALGORITHMS, CELLS, ENGINES, EQUATIONS, FLOW, FORMULATIONS, GRADIENTS, NAVIER STOKES EQUATIONS, PRESSURE, PRESSURE GRADIENTS, REGIONS, STABILITY, TIME, TURBULENCE, VISCOUS FLOW, VOLUME, TRANSPORT AIRCRAFT, SUBSONIC FLIGHT.

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE