Liang Yang

Liang Yang

Lecturer in Marine Renewable Energy Systems

Posts by Collection

code

Multiphysics Finite Volume CFD code

Published:

This is a research code to for the multiphase fluid-structure interaction, mainly for the ‘one-fluid’ formulation.

Taichi-PyEFEM

Published:

This is Taichi version of stabilised finite element method, some publication soon.

publications

Unified one-fluid formulation for incompressible flexible solids and multiphase flows: Application to hydrodynamics using the immersed structural potential method (ISPM)

Published in International Journal for Numerical Methods in Fluids, 2017

Recommended citation: Yang, L., Gil, A.J., Carreño, A.A. and Bonet, J., 2018. Unified one‐fluid formulation for incompressible flexible solids and multiphase flows: application to hydrodynamics using the immersed structural potential method (ISPM). International Journal for Numerical Methods in Fluids, 86(1), pp.78-106. https://doi.org/10.1002/fld.4408

Numerical Simulation of Attenuator Wave Energy Converter Using One-Fluid Formulation

Published in The 28th International Ocean and Polar Engineering Conference, 2018

Recommended citation: Yang, L., Lyu, Z., Yang, P., Pavlidis, D., Fang, F., Xiang, J., Latham, J.P. and Pain, C., 2018, June. Numerical simulation of attenuator wave energy converter using one-fluid formulation. In The 28th International Ocean and Polar Engineering Conference. OnePetro. https://onepetro.org/ISOPEIOPEC/proceedings-abstract/ISOPE18/All-ISOPE18/ISOPE-I-18-074/24379

A novel approach to optimising well trajectory in heterogeneous reservoirs based on the fast-marching method

Published in Journal of Natural Gas Science and Engineering, 2021

Recommended citation: Lyu, Z., Lei, Q., Yang, L., Heaney, C., Song, X., Salinas, P., Jackson, M., Li, G. and Pain, C., 2021. A novel approach to optimising well trajectory in heterogeneous reservoirs based on the fast-marching method. Journal of Natural Gas Science and Engineering, 88, p.103853. https://doi.org/10.1016/j.jngse.2021.103853

research

talks

Hydrodynamic performance of submerged hydrofoils subject to heave and pitch motions

Published:

Flow passing a foil object will produce lift and drag forces, as well as vortex street BvK. With right parameters, a periodic motion of an object in fluids will generate thrust rather than drag. To reduce the study’s complexity, only kinematics parameters were modified and not the geometric ones. The hydrofoil interactions with waves have been investigated using an inhouse CFD code. First, the lift and drag coefficients were validated against the literature. Thereafter, different oscillation parameters, according to the sea state, were studied to optimize the performance of the thrust. From these results it appeared that it is possible to generate thrust at sea state. The numerical model successfully represented the flapping foil interactions with water, the BvK reversed vortices and the leasing-edges vortices. It also allowed observing the global trend of the impact of the flapping motion on thrust generation. Video recording

Working with nature: retrofitting solutions for reducing mooring line loads.

Published:

This paper explores the usage of hydrofoil in offshore floating platforms to reduce the wave induced loads on the mooring lines. Inspired by the nature, thrust can be generated in the wake of flapping foil by reversed von Karman streets, which is mostly used in ocean propulsion systems. It presents preliminary experiments with a hydrofoil retrofitted in a semi-sub model structure exposed to regular and irregular waves. Although still at a very early stage, the preliminary results presented here show that retrofitting a hydrofoil in a floating platform can lead in positive gains at, primarily, the surge forces acting (in these cases) at the model structure’s centre of mass. Video Recording here

teaching