Short-hole jet-in-crossflow velocity field and its relationship to film-cooling performance

Short-hole jet-in-crossflow velocity field and its relationship to film-cooling performance The velocity field of multiple jets-in-crossflow was examined experimentally for various jet hole supply plenum configurations using particle image velocimetry. The jet hydrodynamics are discussed in relation to implications on gas turbine film-cooling applications. The counter-flow plenum case produced desirable in-hole vortices of opposite rotational sense to that of the primary counter-rotating vortex pair (CRVP) in the jet. For this case, the interaction of in-hole vorticity and the CRVP weakened the CRVP, resulting in a lower trajectory and increased spanwise spreading. This is advantageous for film-cooling applications where surface coverage and jet attachment are necessary to prevent hot-gas penetration to the blade or vane surface. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Experiments in Fluids Springer Journals

Short-hole jet-in-crossflow velocity field and its relationship to film-cooling performance

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Publisher
Springer-Verlag
Copyright
Copyright © 2002 by Springer-Verlag
Subject
Engineering; Engineering Fluid Dynamics; Fluid- and Aerodynamics; Engineering Thermodynamics, Heat and Mass Transfer
ISSN
0723-4864
eISSN
1432-1114
D.O.I.
10.1007/s00348-002-0493-9
Publisher site
See Article on Publisher Site

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