Internal flow Simulation of Dump Diffusers for Modern Aircraft Engines

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In this paper parametric analytical studies have been carried out for the geometrical
optimization of dump diffusers for modern aero-gas turbine engines. Numerical studies have
been carried out using SST K- turbulence model. This code solves SST k- turbulence
equations using the coupled second order implicit unsteady formulation. In the numerical
study, a fully implicit finite volume scheme of the compressible, Reynolds-Averaged, Navier-
Stokes equations is employed. We concluded that the judicious optimization of dump
diffusers is needed with respect to its geometric and fluid dynamic constraints for controlling
the pressure recovery and the losses, which can be accomplished through the CFD
techniques lucratively.

Author Name: 
V.R.Sanal Kumar
Santosh Kumar Sahoo
S.Raghunathan
Conference Location: 
Denver, Colorado,USA
Rights: 
2009 by the American Institute of Aeronautics and Astronautics, Inc
Pages: 
pp 7
Conference Date: 
Sunday, August 2, 2009
Paper Reference: 
AIAA 2009-4832
Publisher: 
AIAA
Conference Name: 
45th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit