Title

Flow Characterization Of A Three-Dimensional Separated Annular Diffuser

Abstract

Experiments were performed on two annular diffusers to characterize the flow separation along the outer wall. Both diffusers had the same fully developed inlet flow condition, however, the expansion of the two diffusers differed such that one diffuser replicated a typical compressor discharge diffuser found in a real machine while the other would create a natural separated flow along the outer wall. Both diffusers were tested at two Reynolds numbers, 5×l04 and 1×105, with and without a vertical wall downstream of the exit to replicate the dump diffuser that re-directs the flow from the compressor outlet to the combustor. It was shown that the separation happens quite quickly within the difuaser after which the pressure recovery remains fairly constant. The results also further validate claims that CFD models can not accurately predict flows with high adverse pressure gradients. Copyright © 2010 by ASME.

Publication Date

1-1-2010

Publication Title

ASME International Mechanical Engineering Congress and Exposition, Proceedings

Volume

9

Issue

PART B

Number of Pages

859-865

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1115/IMECE2009-10533

Socpus ID

77954265265 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/77954265265

This document is currently not available here.

Share

COinS