| Biography | |
|---|---|
 Prof. Xizeng ZHAO Zhejiang University, China |
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| Title: High-fidelity numerical modeling of water wave propagation over coastal area using a viscous flow model | |
| Abstract: The performance of interFoam (a widely used solver within OpenFOAM package) in simulating the water wave propagation and its interaction with ocean structures has been reported to be sensitive to the temporal and spatial resolution. To facilitate more fidelity simulations, a high-fidelity numerical model is built based on a high-order accurate Navier-Stokes model, which employs the VPM (volume-average/point-value multi-moment) scheme as the fluid solver and the THINC/QQ method (THINC method with quadratic surface representation and Gaussian quadrature) for the free-surface capturing. Simulations of regular waves in an intermediate water depth are conducted for the model validation and the results are assessed via comparing with the analytical solutions. The performance of the present model and interFoam solver in simulating the wave propagation is systematically compared in this work. The results clearly demonstrate that compared with interFoam solver, the present model significantly improves the dissipation properties of the propagating wave, where the waveforms as well as the velocity distribution can be substantially maintained while the waves propagating over long distances even with large time steps and coarse grids. Finally, the model is applied to model water wave propagation in super long wave tank and interaction with different coastal structures. KEY WORDS: OpenFOAM; high-order accurate model; finite volume method; numerical dissipation; water wave | |
| Biography:
Research interests Free surface flow ;Wave-structure interaction ; Coastal and Offshore Engineering ; Extreme (freak, rogue, focus) wave ; Computational Fluid Dynamics/Constrained Interpolation Profile method (CIP) ;
Dalian University of Technology Ph.D., Engineering, Port, Coastal & Offshore Engineering, 2008 Dalian University of Technology Bachelor, Engineering, Civil Engineering, 2002
Professor of Coastal and Offshore Engineering, Ocean College, Zhejiang University, 2018-Present. Associate Professor of Coastal and Offshore Engineering, Ocean College, Zhejiang University, 2013- 2017. Lecture of Coastal and Offshore Engineering, Ocean College, Zhejiang University, 2012. Researcher, College of Engineering, Ocean University of China, 2011. Research Fellow at Research Institute for Applied Mechanics, Kyushu University, JAPAN, 2009-2011 Research assistant in State Key Laboratory of Offshore and Coastal Engineering, Dalian University of Technology, CHINA, January 2009-March 2009. July 2002-September 2003. Employed as an employee in Liaoning Expressway, CHINA. | |
