A Verification of Cavity Model for the Analysis of a Partially Cavitating Two-Dimensional Hydrofoils

概要

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In this paper, a verification of cavity model for the analysis of partially cavitating for two dimensional hydrofoil by using a potential surface panel method is presented. A type of cavitation that is applied for calculation is sheet cavitation. Using the Green's theorem, the normal dipoles and sources distributions on surfaces of the foil and cavity may constitute the perturbation velocity potential. The source singularity plays an important role in the cavity surface and is determined by an iterative process. We verified a various cavity models in the transition zone and it is concluded that a closed type model is approvable to physical phenomenon. The effect of hydrofoil thickness on the cavity shape is investigated. That is the bigger hydrofoil thickness generates the shorter cavity volume. As for a closed type model, some quantities, for example, cavity shapes, surface pressure distribution and other hydrodynamics characteristics have been calculated. The calculated results are in good agreements with other numerical calculations.
社団法人日本船舶海洋工学会の論文
1997-03-25