Numerical Framework for Marine/Offshore Applications

The high-fidelity simulation framework for free-surface flows and fluid-structure interaction (FSI) includes interface-capturing level-set method for free-surface motion, that may include wave breaking and other topological changes. The stabilized and multi-scale formulation is used for the fluid mechanics and level-set equations. The underlying numerical formulation globally conserves mass and preserves a sharp air–water interface for the entire length of the simulation. For FSI problems, an advanced structural modeling techniques based on Isogeometric Analysis (IGA) is employed. The bending-stabilized cable formulation is used to model mooring cables. 

Computational free-surface FSI simulation of full-scaled floating wind turbine in parked condition with full geometric complexity, including spar buoy, mooring cables, main shaft, tower, nacelle and fully-resolved rotor.

The framework is suitable for accurate prediction of wave loading on a structures (ship deck, floating platforms, etc), simulation of turbine arrays (layout optimization and wake-structure interaction), stability analysis under different sea conditions, parametric optimization, air-wave-structure interaction (e.g. floating horizontal- and vertical-axis wind turbines). Current research areas include extension of the framework to handle cavitating flows in submarine and ship propellers. 

Hydrodynamic simulation of Mirage Drive propulsion system based on two oscilating flexible foils (Collaboration with Hobie Cat).

Free-surface hydrodynamic simulation of tidal stream turbine in Airy waves.

Publications

  1. J.Yan, X.Deng, A.Korobenko, Y.Bazilevs Free-surface flow modeling and simulation of horizontal-axis tidal-stream turbinesComputers & Fluids, 158, 157-166,  2017

  2. J.Yan, A.Korobenko, X.Deng, Y.Bazilevs Computational free-surface fluid-structure interaction with application to offshore floating wind turbinesComputers & Fluids, 141, 155-174, 2016

  3. J.Yan, B.Augier, A.Korobenko, J.Czarnowski, G.Ketterman, Y.Bazilevs FSI modeling of tandem compliant hydrofoils for kayak propulsionComputers & Fluids, 141, 155-174, 2016

  4. B.Augier, J.Yan, A.Korobenko, J.Czarnowski, G.Ketterman, Y.Bazilevs  Experimental and numerical FSI study of compliant hydrofoilsComputational Mechanics, 55(6), 1079-1090, 2015

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