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2: Modelling extreme waves and their loads on offshore structures

Summary of the impact

The impact arises from the study of extreme ocean waves and their interaction with marine structures. It is relevant to the offshore, shipping, coastal and marine renewables industries and has been both economic and regulatory, involving:

(a) The establishment of revised guidelines for the design of new structures / vessels.

(b) Enhancing best practice, both from an economic and a safety perspective.

(c) Reducing the uncertainty in critical design issues, thereby improving overall reliability.

(d) Enabling "end-of-life" extensions for existing structures.

(e) Facilitating the effective decommissioning of redundant structures.

(f) Contributing to the development of new industrial R&D equipment, thereby assisting specialist UK manufacturers to secure international orders.

Submitting Institution

Imperial College London

Unit of Assessment

Civil and Construction Engineering

Summary Impact Type

Economic

Research Subject Area(s)

Mathematical Sciences: Statistics
Earth Sciences: Oceanography
Engineering: Maritime Engineering

Offshore Renewable Energy Deployment

Summary of the impact

Examples are provided of significant impact by the Centre for Mathematical Modelling and Flow Analysis (CMMFA) upon the Marine Renewables and Offshore Wind communities. In particular, CMMFA informed the design of a novel wave energy converter being commercialised for connection to the national grid. CMMFA has also contributed to a study of the design parameters for an offshore wind power station as part of a larger interdisciplinary collaborative research effort. This work responds to and informs the RCUK Energy Programme via underpinning research, capacity building and provision of trained personnel thus enacting UK Government Energy Policy.

Submitting Institution

Manchester Metropolitan University

Unit of Assessment

Earth Systems and Environmental Sciences

Summary Impact Type

Environmental

Research Subject Area(s)

Earth Sciences: Oceanography
Engineering: Maritime Engineering, Interdisciplinary Engineering

Transforming the Marine Renewables Industry through Wave Power Research

Summary of the impact

Wave power research at Queen's has led directly to the development of two types of convertor by Aquamarine Power Ltd (Edinburgh) and Voith Hydro Wavegen (Inverness). Direct employment totalling 400 person years has resulted along with hundreds of people in other companies delivering the different phases of the prototype machines. Financed by over £60 million from both the public but mainly the private sectors, this represents 20% of the total investment in wave power worldwide during this period. Internationally recognised success in wave power has led to the establishment of the Queen's team in tidal stream energy and environmental monitoring of marine renewable systems.

Submitting Institution

Queen's University Belfast

Unit of Assessment

Civil and Construction Engineering

Summary Impact Type

Technological

Research Subject Area(s)

Engineering: Environmental Engineering, Maritime Engineering, Interdisciplinary Engineering

Guidelines and standards which improve design and safety of marine structures subject to steep wave impact.

Summary of the impact

Guidelines and standards underpinned by Strathclyde research have improved the design, assessment and the safety of marine structures subjected to wave impact in large steep waves. The guidelines and standards are widely used in the design of floating structures, particularly Floating Production, Storage and Offloading vessels (FPSOs) and offshore wind turbines. Since January 2008 the work has impacted the design, strength assessment and failure analysis of fixed offshore oil and gas platforms, renewable energy devices and ships. The guidelines and standards are used by designers to mitigate against damage caused by breaking wave impact, thereby improving the safety of mariners and offshore workers, reducing lost production due to downtime, and cutting the risk of environmental impact due to oil pollution. The research has also been used by Strathclyde researchers in industry-focussed studies, in legal work related to the loss of the oil tanker Prestige (2009-2013), in the assessment of the Schiehallion FPSO for BP (2010), and design of a Scottish harbour wave screen (2009) that allows ferries to access and stay in the harbour in more severe weather.

Submitting Institution

University of Strathclyde

Unit of Assessment

Aeronautical, Mechanical, Chemical and Manufacturing Engineering

Summary Impact Type

Technological

Research Subject Area(s)

Earth Sciences: Oceanography
Engineering: Maritime Engineering, Interdisciplinary Engineering

Accelerated development of a tidal stream energy industry

Summary of the impact

Our research has been key to the development of investor confidence in an emerging UK tidal stream industry. We have contributed to the development and validation of commercial and open- source software for tidal stream system design and our expertise has been instrumental to the successful delivery of major objectives of two national industry-academia marine energy projects commissioned by the Energy Technologies Institute (ETI). Taken together, these outcomes have reduced engineering risks that had been of concern to potential investors. Investor confidence in tidal energy has been increased, as highlighted by Alstom's £65m acquisition of a turbine developer following a key outcome of the ETI ReDAPT project.

Submitting Institution

University of Manchester

Unit of Assessment

Civil and Construction Engineering

Summary Impact Type

Environmental

Research Subject Area(s)

Engineering: Mechanical Engineering, Interdisciplinary Engineering

Gravity-wave parametrization in weather forecast and climate models

Summary of the impact

The Warner-McIntyre parametrization scheme for non-topographic atmospheric gravity waves, developed at the Department of Applied Mathematics and Theoretical Physics (DAMTP), University of Cambridge, during the period from 1993 to 2004, has since 2010 been used by the UK Met Office in their operational models for seasonal forecasting and climate prediction .The parametrization is regarded by the Met Office as a vital part of improved representation of the stratosphere in those models, which in turn has been shown to lead to significant operational benefits.

Submitting Institution

University of Cambridge

Unit of Assessment

Mathematical Sciences

Summary Impact Type

Technological

Research Subject Area(s)

Mathematical Sciences: Pure Mathematics
Earth Sciences: Oceanography
Engineering: Maritime Engineering

2. Commercialisation of Guided Wave Inspection for the Detection of Corrosion in Pipes

Summary of the impact

Research led by Professors Cawley and Lowe (employed at Imperial College over the whole 1993-2013 period) resulted in guided wave inspection being established as a new non-destructive evaluation (NDE) method. It is used worldwide to screen long lengths of pipework for corrosion, particularly in the petrochemical industry. A spin-out company has been established that employs seven PhD graduates in NDE from Imperial and the technology is also licensed to another company. Turnover on equipment sales 2008-2013 exceeds £50M and the service companies using the equipment generate about £75M pa in revenue worldwide and employ about 300 FTE staff to carry out the inspection. The oil companies benefit from greatly reduced cost of inspection, especially in areas such as insulated, offshore and buried pipes where access is difficult and expensive for conventional inspection methods. Furthermore, the reliability of inspection is significantly improved, leading to major improvements in safety.

Submitting Institution

Imperial College London

Unit of Assessment

Aeronautical, Mechanical, Chemical and Manufacturing Engineering

Summary Impact Type

Technological

Research Subject Area(s)

Physical Sciences: Other Physical Sciences
Technology: Communications Technologies
Medical and Health Sciences: Neurosciences

The Violent Forces on Coastal Structures due to Storm Waves

Summary of the impact

Mathematical models of violent flows developed by Dr Mark Cooker at UEA have been adopted by industry. The work enhances the capabilities of coastal engineers to design and repair seawalls and coastal structures, and enhances their interpretation of damage inflicted by storm waves. The research has direct industrial application, and is used to contain, interpret and lessen sea-wave damage to structures. Commercial software has proved inadequate in this field, compared with Cooker's mathematical modelling, because computations alone cannot resolve the brief time- scales and short length-scales over which there are large changes in pressure, and sudden excursions of the liquid as splashes. An example of this impact is the design of an observation gantry exposed to storm waves.

Submitting Institution

University of East Anglia

Unit of Assessment

Mathematical Sciences

Summary Impact Type

Technological

Research Subject Area(s)

Earth Sciences: Oceanography
Engineering: Maritime Engineering, Interdisciplinary Engineering

Wave Intensity Analysis removes the need for drugs in the diagnosis of coronary heart disease

Summary of the impact

Professor Kim Parker in the Department of Bioengineering has developed Wave Intensity Analysis (WIA) for characterising pressure and flow waves in arteries. It is being used to assess whether patients need interventions to reduce narrowing of their coronary arteries. Conventional diagnoses require the use of a drug that is costly, time consuming to administer and has unpleasant side effects; it cannot be used in some patient groups. WIA obviates the need for the drug and can be used as the sole diagnostic method in more than half of patients. After being assessed in trials involving >2500 patients, the method became commercially available, and is in routine clinical use in 3 continents. It removes the cost of the drug (which can be US$500 per case in some countries), increases throughput by halving the time taken for the procedure, reduces side effects and makes rigorous diagnosis available to patient groups that cannot tolerate the drug and therefore depended on unreliable, imaging-based methods until now.

Submitting Institution

Imperial College London

Unit of Assessment

General Engineering

Summary Impact Type

Technological

Research Subject Area(s)

Medical and Health Sciences: Cardiorespiratory Medicine and Haematology, Medical Physiology

Modelling oceanic internal waves to enhance marine and naval predictions and practices

Summary of the impact

Large-amplitude horizontally propagating internal solitary waves commonly occur in the interior of the ocean. This case study presents evidence to demonstrate the impact of research conducted by Professor Grimshaw at Loughborough University on the development and utilisation of Korteweg- de Vries (KdV) models of these waves, which has formed the paradigm for the theoretical modelling and practical prediction of these waves.

These waves are highly significant for sediment transport, continental shelf biology and interior ocean mixing, while their associated currents cause strong forces on marine platforms, underwater pipelines and submersibles, and the strong distortion of the density field has a severe impact on acoustic signalling.

The theory developed at Loughborough University has had substantial impact on the strategies developed by marine and naval engineers and scientists in dealing with these issues.

Submitting Institution

Loughborough University

Unit of Assessment

Mathematical Sciences

Summary Impact Type

Environmental

Research Subject Area(s)

Earth Sciences: Oceanography
Engineering: Maritime Engineering, Interdisciplinary Engineering

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