Accession Number : ADP007709

Title :   Flow Computation in Combustion Chambers using Zonal Nonstaggered Grids,

Corporate Author : DEUTSCHE GESELLSCHAFT FUER LUFT- UND RAUMFAHRT E V COLOGNE (GERMANY F R)

Personal Author(s) : Rachner, M.

Report Date : FEB 1992

Pagination or Media Count : 18

Abstract : A Rhie-type nonstaggered grid 3D-Navier-Stokes Code working on overlaid subdomains by a zonal technique is applied on two model combustion chambers. In case of the swirling turbulent combustor flow investigated, a locally unrealistic flow behavior at domain boundaries was found on the coarse grid. This is caused by strong overshoots of the momentum interpolated cell face mass fluxes, not reported up to now in the literature. The influence of the pressure gradient discretization at boundaries on these overshoots is shown.

Descriptors :   *COMBUSTION CHAMBERS, *TURBULENT FLOW, BEHAVIOR, BOUNDARIES, CELLS, CHAMBERS, COMBUSTION, COMBUSTORS, FLOW, GRADIENTS, GRIDS, MASS, MODELS, MOMENTUM, PRESSURE, PRESSURE GRADIENTS.

Subject Categories : Fluid Mechanics
      Combustion and Ignition

Distribution Statement : APPROVED FOR PUBLIC RELEASE