posted on 2018-10-18, 10:32authored byG.J. Williams
An experimental investigation of the flow behaviour in, and overall
performance of, the straight-core annular diffuser under naturally and
artificially generated inflow conditions is described. For naturally
developed near uniform inflow diffuser overall performance, and stability limits, are theoretically predicted.
In the first part of the research program the diffusers were tested
over a range of naturally developed inflow velocity profiles from near-uniform to fully developed flow. The diffuser pressure recovery was observed to fall with initial thickening of the inlet boundary layers and subsequently improved as the flow became fully developed. Downstream of the diffuser exit pressure recovery continued for some two hydraulic diameters into
the settling length. The measured levels of diffuser performance compared well with relevant published data but similar stability limits were not
found. This was attributed to the varying inflow conditions for the
published data. [Continues.]
Funding
Loughborough University of Technology. Science Research Council.
History
School
Aeronautical, Automotive, Chemical and Materials Engineering
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/
Publication date
1972
Notes
A Doctoral Thesis. Submitted in partial fulfilment of the requirements for the award of Doctor of Philosophy at Loughborough University.