Multicomponent Fuel Evaporation

Subject tags
Transportation & Aerospace

Dr. Mike Bardon and Dr. Azemi Benaïssa (Department of Mechanical Engineering)

Gas turbine engine fuels are comprised of hundreds of components with varying volatility. A multi-component fuel evaporation model developed at RMC has been locally incorporated into the commercial Fluent CFD code. In order to investigate fuel property effects on evaporation, a simplified 2D axisymmetric model of a jet in a co-flow is being studied.

The figure below shows 2D contours of stream function for a co-flowing jet in a circular duct with a Craya-Curtet (Ct) number of 0.46 where recirculation is expected. Since the flow is symmetrical only the top half is shown. The Ct parameter is used as a predictor of the presence of recirculation in the flowfield of a jet and duct co-flow. For values of this parameter below 0.8, recirculation is predicted. CFD modelling is being used to verify the Craya-Curtet limit in the 2D flow in which a parametric study of multicomponent fuel droplet evaporation will be undertaken.

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