Vortex Induced Vibration and Structural Integrity of Deep Water Flexible Risers
Lead Research Organisation:
Imperial College London
Department Name: Aeronautics
Abstract
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Publications
Artola M
(2021)
Generalized Kelvin-Voigt Damping for Geometrically Nonlinear Beams
in AIAA Journal
Bao Y
(2016)
Generalized thick strip modelling for vortex-induced vibration of long flexible cylinders
in Journal of Computational Physics
Bao Y
(2018)
Direct and Large-Eddy Simulation X
Bao Y
(2019)
Numerical prediction of vortex-induced vibration of flexible riser with thick strip method
in Journal of Fluids and Structures
Cantwell C
(2015)
Nektar++: An open-source spectral/ h p element framework
in Computer Physics Communications
Maraniello S
(2017)
Optimal Rolling Maneuvers with Very Flexible Wings
in AIAA Journal
Maraniello S
(2016)
Optimal vibration control and co-design of very flexible actuated structures
in Journal of Sound and Vibration
Moxey D
(2020)
Nektar++: Enhancing the capability and application of high-fidelity spectral/ h p element methods
in Computer Physics Communications
Moxey D
(2016)
Optimising the performance of the spectral/ h p element method with collective linear algebra operations
in Computer Methods in Applied Mechanics and Engineering
| Description | The simulations capability we have produced allows us to model very long oil riser pipes that suffer from a fluid structure interaction known as vortex induced vibration (VIV) that can lead to failure of these pipes due to fatigues. The length of these pipes is very long O(1000D) making the simulation of the full problem intractable. Previous approaches have used a series of 2D slices to represent to hydrodynamics which did not fully capture the 3D anisotropic nature of the fluid flow. We have extended this approach to a "thick" strip method which allows us to capture the local anisotropic nature of the fluid flow but also trivially parallelise the approach to be able to model very long pipes in a tractable timescale. |
| Exploitation Route | At a conference in 2015 I discussion with a representative of the US Airforce about using this technique to model the guide strings on parachutes. In a further invitation to the National University of Singapore in January 2017 I discussed the use of the Thick strip method with Professor Rajeev Jaiman who is extending his codes in vortex induced vibration to include this approach. One researcher, Dr Yan Bao, now has an academic position in Shanghai Jaitong University and continues to develop and promote the technology. Finally we are now part of recent EU-Brazil award focusing on wind engineering where the technology is being applied to understand the fluid structure interaction of a turbine blade when it is parked in a stationary position. This grant started in June 2019 and runs until May 2021. |
| Sectors | Aerospace Defence and Marine Environment |
| Description | Council of Science and Technology Review on Modelling |
| Geographic Reach | National |
| Policy Influence Type | Membership of a guideline committee |
| Description | ExaFlow |
| Amount | £254,824 (GBP) |
| Funding ID | 671571 |
| Organisation | European Commission |
| Sector | Public |
| Country | European Union (EU) |
| Start | 11/2015 |
| End | 10/2018 |
| Description | High-Performance Computing for Wind Energy (HPCWE) |
| Amount | € 1,995,651 (EUR) |
| Funding ID | 828799 1 995 651 |
| Organisation | European Commission H2020 |
| Sector | Public |
| Country | Belgium |
| Start | 05/2019 |
| End | 05/2021 |
| Description | University of São Paulo |
| Organisation | Federal University of São Paulo |
| Country | Brazil |
| Sector | Academic/University |
| PI Contribution | Researchers at the university of Sao Paulo are using Firedrake for a variety of challenges related to seismic inversion. Dr Ham visited in November 2019 and gave a Firedrake tutorial. |
| Collaborator Contribution | Researchers at the university of Sao Paulo are using Firedrake for a variety of challenges related to seismic inversion. Dr Ham visited in November 2019 and gave a Firedrake tutorial. |
| Impact | Researchers at the university of Sao Paulo are using Firedrake for a variety of challenges related to seismic inversion. Dr Ham visited in November 2019 and gave a Firedrake tutorial. |
| Start Year | 2019 |
| Title | Nektar++ version 4.0.1 |
| Description | Nektar++ is a tensor product based finite element package designed to allow one to construct efficient classical low polynomial order h-type solvers (where h is the size of the finite element) as well as higher p-order piecewise polynomial order solvers. |
| Type Of Technology | Software |
| Year Produced | 2014 |
| Open Source License? | Yes |
| Impact | The software is being used by a number of national and international groups and our web site is currently being visited up to 100 times a day according to google analytics |
| URL | http://www.nektar.info/downloads/file/nektar-source-tar-gz-2/ |
| Title | SHARPy: Simulation of High-Aspect-Ratio aircraft and wind turbines in Python |
| Description | Nonlinear and dynamically linearized models of very flexible aircraft dynamics for design, analysis, and control law synthesis. |
| Type Of Technology | Software |
| Year Produced | 2014 |
| Open Source License? | Yes |
| Impact | It has been used in the aerodynamic and structural design of Facebook's Aquila, Airbus's Zephyr and Astigan Ltd's solar-powered aircraft. |
| URL | http://www.imperial.ac.uk/aeroelastics/sharpy |