The mixing characteristics of dilution jets issuing into a confined cross-flow
thesisposted on 17.04.2018 by Jonathan F. Carrotte
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An experimental investigation has been carried out into the mixing of a row of jets injected into a confined cross-flow. Measurements were made on a fully annular test facility, the geometry of the rig simulating that found in the dilution zone of a gas turbine combustion chamber. A small temperature difference of 44°C between the cross-flow and dilution fluid allowed the mixing characteristics to be assessed, with hot jets being injected into a relatively cold cross-flow at a jet to cross-flow momentum flux ratio of 4.0. The investigation concentrated on differences in the mixing of individual dilution jets, as indicated by the regularity of the temperature patterns around the cross-flow annulus. Despite the uniform conditions approaching the dilution holes there were significant differences in the temperature patterns produced by the dilution jets around the annulus. [Continues.]
Great Britain, Royal Aerospace Establishment (Pyestock), contract no. D/ERl/9/4/2170/113/RAE(P).
- Aeronautical, Automotive, Chemical and Materials Engineering
- Aeronautical and Automotive Engineering