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CFD results of erosive cavitating flows

AVL implemeted the erosion model provided by LEGI into the FIRE program.

Erosion model validation was performed by AVL with the LEGI geometry. Numerical results showed that cavitation is expected to occur on the place where cavitation region ends. This was in agreement with the findings reported by LEGI, TU Graz and BOSCH. The maximum velocity around the cavitation reported by LEGI was 65 m/s, calculated velocity around the vapour region was 65 - 75 m/s. The size of the cavitation region was fluctuating, which was observed in experiments as well. The size of the cavitation region corresponds to the erosion location, as reported previously. The erosion is predicted in the bubble collapse region in agreement with the measurement as well. The steady-state material removal rates reported by LEGI were 3-5e-10m/s, AVL FIRE predicted 3.33e-10m/s material removal.

Reported by

AVL List GmbH
Hans List Pl. 1
8020 Graz
Austria
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