PhD scholarship in Dynamics and Kinematics of Extreme Non-Breaking and Breaking Irregular Waves

Technical University of Denmark - Department of Mechanical Engineering (DTU Mekanik)

The Section of Fluid Mechanics, Coastal and Maritime Engineering (FVM) in the Department of Mechanical Engineering (DTU Mekanik) at the Technical University of Denmark has an open PhD position on the subject “Dynamics and kinematics of extreme non-breaking and breaking irregular waves”

The main research areas of the FVM Section are fluid mechanics, hydrodynamics, and the interaction with structures and seabed. The methods applied include theoretical, numerical and experimental modelling, and these methods are used for determining the behaviour of flows, including their impact on surrounding structures. Examples of technical applications include the scavenging process in two-stroke diesel engines, estimation of sediment transport, coastal morphology, and determination of wave loads on ships and offshore structures.

Extreme storm wave events can represent a great threat to coastal and offshore structures. Many older platforms in the sea have been exposed to subsidence, which makes them more exposed to wave impact. Experiences from the North Sea have revealed that breaking waves occur much more frequently than originally anticipated even in relatively deep water. This might result in higher loading, than originally designed for, especially for the upper structure and upper structural elements. This PhD scholarship is part of a collaboration between DTU-MEK and DHRTC through the project “Dynamics of extreme waves and their interaction with offshore structures”.

Responsibilities and tasks
The main objective of the project is to develop a new numerical model for the calculation of the dynamics and kinematics of highly nonlinear multi-directional irregular water waves. Highly accurate and novel Boussinesq-type formulations of the governing equations have recently been derived, and the project should focus on solving these equations with spectral methods and periodic boundary conditions.

The spectral approach will allow for formulations based on much higher spatial derivatives and therefore much higher accuracy than present in any existing Boussinesq model. At the same time we expect this model to be significantly faster than existing wave models. Once the model has been implemented and verified on non-breaking extreme waves in 2D and 3D, it is planned to develop a breaking module, which will allow us to consider spilling breaking waves within the framework of potential flow models.

Application
To apply, please read the full job advertisement at www.career.dtu.dk

Application deadline: 26 January 2018 (local time).

DTU Mechanical Engineering covers the fundamental engineering disciplines within Solid mechanics, Fluid mechanics, Coastal and Maritime Engineering, Energy systems and energy conversion, Materials and Surface Engineering, Manufacturing Engineering, Engineering design and Product development. The department has a scientific staff of about 135 persons, 100 PhD students and a technical/administrative support staff of about 85 persons.

DTU is a technical university providing internationally leading research, education, innovation and scientific advice. Our staff of 5,800 advance science and technology to create innovative solutions that meet the demands of society; and our 11,000 students are being educated to address the technological challenges of the future. DTU is an independent academic university collaborating globally with business, industry, government, and public agencies.

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Advert information

Type / Role:

PhD

Location(s):

Europe