Abstract:The dependence of the tip-leakage flow to the tip gap size is investigated on the third rotor of a high-pressure axial compressor. Three tip clearances are simulated with a hybrid RANS/LES approach at the nominal operating point with the objective of resolving better the vortical structures in the tip region. The numerical results are in fair agreement with the experiment in the tip region, for the largest gap. The structures depicted in the simulations indicate stronger vortical structures with the larger gap… Show more
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