Resistance Analysis of Wigley Hull Design on Calm Water Using Openfoam
17 Pages Posted: 20 Apr 2018
Date Written: April 6, 2018
A Computational Fluid Dynamics (CFD) model to simulate the water and air flow around competition kayak hulls was developed, with the principal aim of allowing accurate drag force predictions. These model used the Volume of Fluid (VoF) method to determine the location of the free surface, and the k-ω Shear-Stress Transport (SST) to account for turbulent effects. The open-source CFD software package OpenFOAM was used for this purpose, namely its solver application interFoam. The model was first tested on the Wigley hull, a typical validation case for models of flow around marine vessels. Effects of mesh refinement and alteration were studied, and the results for total drag force and hull wave profiles were obtained from the model for several different Froude numbers. Drag force was calculated for a wide range of velocities and compared to experimental data and to other numerical results. The drag forces obtained for the kayak models was generally close to experimental results up to velocities around 3.69 m/s, after which the numerical model underestimated the value of the total drag.
Keywords: Computational Fluid Dynamics (CFD), Volume of Fluid (VoF), Shear-Stress Transport (SST)
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