Advanced CFD-Simulations of Free-Surface Flows Around Modern Sailing Yachts Using a Newly Developed OpenFOAM Solver

Slawig, Thomas, Renzsch, H. F., Graf, Kai. .U and Meyer, Janek (2016) Advanced CFD-Simulations of Free-Surface Flows Around Modern Sailing Yachts Using a Newly Developed OpenFOAM Solver [Paper] In: Chesapeake Sailing Yacht Symposium , März 2016, Yacht Research Unit Kiel .

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Abstract

While plain vanilla OpenFOAM(OF) has strong capabilities with regards to quite a few typical CFD-tasks, some problems actually require additional solvers and numerical methods for efficient computation of high-quality results. One of the fields requiring these additions is the computation of large-scale free-surface flows as found e.g. in naval architecture. This holds especially for the flow around typical modern yacht hulls, often planing, sometimes with surfacepiercing appendages. Particular challenges include, but are not limited to, breaking waves, sharpness of interface, numerical ventilation (aka streaking) and a wide range of flow phenomenon scales. A new OF-based application including newly implemented discretisation schemes, gradient computation and rigid body motion computation is described. The new code is validated against published experimental data; the effect on accuracy, computational time and solver stability is shown by comparison to standard OF-solvers (interFoam / interDyMFoam) and Star-CCM+. The code’s capabilities to simulate complex ”real-world” flows are shown on a well-known racing yacht design.

Document Type: Conference or Workshop Item (Paper)
Keywords: computer program; computational fluid dynamics; design; free surface; laminar flow; simulation
Research affiliation: OceanRep > The Future Ocean - Cluster of Excellence
Kiel University
Date Deposited: 11 Sep 2019 13:46
Last Modified: 11 Sep 2019 13:46
URI: http://eprints.uni-kiel.de/id/eprint/47705

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