MUltiphase Flow-induced Fluid-flexible structure InteractioN in Subsea applications (MUFFINS)
Lead Research Organisation:
Imperial College London
Department Name: Chemical Engineering
Abstract
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Organisations
Publications
Constante-Amores C
(2020)
Dynamics of retracting surfactant-laden ligaments at intermediate Ohnesorge number
in Physical Review Fluids
Constante-Amores C
(2021)
Direct numerical simulations of transient turbulent jets: vortex-interface interactions
in Journal of Fluid Mechanics
Heaney C
(2022)
An AI-based non-intrusive reduced-order model for extended domains applied to multiphase flow in pipes
in Physics of Fluids
Heaney C
(2022)
Extending the Capabilities of Data-Driven Reduced-Order Models to Make Predictions for Unseen Scenarios: Applied to Flow Around Buildings
in Frontiers in Physics
Obeysekara A
(2021)
Prediction of multiphase flows with sharp interfaces using anisotropic mesh optimisation
in Advances in Engineering Software
Phillips T
(2023)
Solving the discretised neutron diffusion equations using neural networks
in International Journal for Numerical Methods in Engineering
Phillips T
(2022)
Multi-Output Regression with Generative Adversarial Networks (MOR-GANs)
in Applied Sciences
Phillips T
(2021)
An autoencoder-based reduced-order model for eigenvalue problems with application to neutron diffusion
in International Journal for Numerical Methods in Engineering
Phillips T
(2021)
Reduced-Order Modelling with Domain Decomposition Applied to Multi-Group Neutron Transport
in Energies
| Description | Recently, we have found that: 1. The coupled static-dynamic loading mechanism of the travelling liquid-gas slug flow is fundamental to the flow-induced vibration of a long flexible cylindrical structure. This mechanism can be captured through an improved phenomenological and mechanical model accounting for some essential features (velocity, length, fluctuation frequency) of slug flow. 2. The occurrence of complex multiple resonances due to the slug flow fluctuation is found to be responsible for the structural vibration with multi modes which may travel and switch in time and along the structural span. Such mode switching and transition have improved an understanding of the likelihood of local fatigue-related issues in engineering applications. 3. The effects of practical flow-pipe parameter have been parametrically investigated, shedding new light on the structural dynamic response features and a critical parametric range which could be avoided for a safe real-life design of subsea structures. 4. Mathematical empirical models are being developed and advanced, assisting the associated experimental setup for studying the multiphase flow-induced vibration and fluid-flexible structure interaction of industrial relevance. |
| Exploitation Route | Mathematical models are being improved and several parametric investigations are being carried out together with comparisons and validations with experimental and alternative numerical studies. They are presented and discussed through a series of steering committee meetings involving industry and academic partners. New simulations involving multiphase flow-induced vibration and fluid-structure interaction are being generated whose outputs, once validated, can be used as new benchmarking data. Analysis tools are being advanced which could be further used, modified, and extended by other researchers in the future in a wide range of disciplines involving multiphase flows, flexible structures, and flow-induced vibrations. New international partnerships with institutions in China (Southwest Petroleum University, Shanghai Jiao Tong University) are being developed, widening the research collaborations. It is hoped that the prediction tools resulting from the present project could be utilized by industry for preliminary analysis and cost-efficient design to optimize the flow-structural configurations for real-life operations. We also hope that the project outcomes could contribute to the industry recommended practice such as the Guidelines for the Avoidance of Vibration-Induced Fatigue Failure in Subsea Systems. |
| Sectors | Energy,Other |