Post-doctoral researcher on vibroacoustics

Delft University of Technology

Netherlands

Post-doctoral researcher on vibroacoustics


Department/faculty: Faculty Civil Engineering and Geosciences


Level:


Working hours: 36-40 hours weekly


Contract: Duration of 1 year


Salary: 3303 - 4166 euros monthly (full-time basis)


Faculty Civil Engineering and Geosciences

 

The Faculty of Civil Engineering and Geosciences (CEG) is committed to outstanding international research and education in the field of civil engineering, applied earth sciences, traffic and transport, water technology and delta technology. The research covers global social issues and is closely connected to education as well as the work of a wide range of knowledge institutions. CEG is convinced that Open Science helps to realise these goals and supports its scientists in integrating Open Science in their research practice. The Faculty of CEG comprises 28 research groups in the following seven departments: Materials Mechanics Management & Design, Engineering Structures, Geoscience and Engineering, Geoscience and Remote Sensing, Transport & Planning, Hydraulic Engineering and Water Management.


The Department of Hydraulic Engineering is mainly concerned with major surface waters such as rivers, estuaries and seas. The focus is on understanding, designing and implementing human interventions in the natural environment for the discharge of water, for protection against water, for transport over water and for buiding in water.


Within the department, the Offshore Engineering section focuses on the mechanics of offshore structures, including their interaction with wind, currents, waves and sea ice. The section actively cooperates with all types of energy companies.    


https://www.tudelft.nl/en/ceg

 

Job description
Underwater noise pollution generated by pile driving has been an issue of serious concern due to the rapid developments in offshore wind and other offshore construction activities. The underwater noise pollution poses a threat to marine mammals and all new (to be constructed) wind farms require a thorough assessment of the environmental impact; underwater noise due to the installation of foundation piles offshore becomes an essential part of the latter. Next to that, regulatory bodies in various European countries impose limits on the maximum noise levels allowed during the construction process. To comply with such limits, noise mitigation becomes essential in many cases. To reduce the noise, many offshore companies have developed various mitigation measures. One of the solutions widely adopted is the use of the so-called underwater air-bubble curtains around the foundation pile.


The research team has developed a tool that can be used for noise predictions in the free-field (without the presence of the air-bubble curtain surrounding the installation pile); the so-called SILENCE software. SILENCE is a vibro-acoustic model which is used in underwater noise predictions for research purposes and is dedicated to noise predictions related to offshore pile installation. The basic module of the software is used for free-field noise predictions (without the presence of a bubble curtain) in a an environemnt consisting of a water column overyling a horizontally stratified elastic seabed [1,2]. The main task of the post-doc researcher will be to further develop the model to include multiple air-bubble curtains (and possibly other noise mitigation techniques) around the pile.


[1] A. Tsouvalas, “Underwater noise generated by offshore pile driving,” PhD dissertation, Delft University of Technology, 2015.


[2] A. Tsouvalas and A.V. Metrikine, Noise reduction by the application of an air-bubble curtain in offshore pile driving, Journal of Sound and Vibration, 371:150-170, 2016.

 

Requirements
The candidate should:


hold a Ph.D. degree in related scientific field; structural dynamics, acoustics, offshore engineering.

have an excellent knowledge of the English language;

be eager to expand his knowledge in dynamics of structures, soil-structure, fluid-structure interaction and vibroacoustics;

be familiar with analytical or semi-analytical techniques to solve problems in structural acoustics (not a strict prerequisite for the position);

be affiliated with basic programming in any of the languages mentioned here: Fortran, Python, Matlab.

 

Conditions of employment
TU Delft offers a customisable compensation package, a discount for health insurance and sport memberships, and a monthly work costs contribution. Flexible work schedules can be arranged. An International Children’s Centre offers childcare and an international primary school. Dual Career Services offers support to accompanying partners. Salary and benefits are in accordance with the Collective Labour Agreement for Dutch Universities.

 

Information and application
For more information about this position, please contact Dr. Apostols Tsouvalas, assistant profeessor, e-mail: a.tsouvalas@tudelft.nl.


To apply, please send your CV, motivation letter and a short essay (max 2 pages) about how you would approach this position and research question in one single pdf file entitled Lastname_ CITG18-53.pdf by 30 January 2019 to Recruitment-CiTG@tudelft.nl

 


In your application, please refer to Polytechnicpositions.com

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