ENGINEER INTERNSHIP
Detail de l'annonce :
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Founded in 1828, Bureau Veritas is an international group specialized
in the inspection, analysis, audit, and certification of products,
infrastructure (buildings, industrial sites, equipment, ships, etc.)
and management systems in relation to regulatory or voluntary
standards.
Recognized and accredited by major national and international
organizations, Bureau Veritas is present in 140 countries through a
network of 900 offices and laboratories. It has more than 75,000
employees and a client base of more than 370,000. The marine branch is
the historical activity of Bureau Veritas, and is still one of the
main subdivisions.
Bureau Veritas Marine & Offshore develops its own rules for the
classification of floating units and actively contributes to the
development of common rules within IACS (International Association of
Classification Societies).
The topic of the internship is the development of a numerical method
for the evaluation of the second-order wave loads in time domain.
The second-order wave loads are used in the simulations of moored
units in waves.
The current procedure is based on pre-calculation of the second-order
loads in frequency domain (QTF – Quadratic Transfer Functions) and
their subsequent reconstruction in time domain. This procedure is not
fully consistent because one part of the QTF’s requires the
knowledge of the linear body motions, meaning that the part of the
second-order loads will not be consistently updated during the
simulation. This can become problematic for floating wind turbines,
where wave frequency motions are modified due to non-linearities (such
as quadratic damping or mooring forces).
Calculating 2nd order loads directly in time domain would also allow
accounting for additional non-linearities (Froude-Krylov and geometric
ones to start with).
The intern will thus develop a prototype allowing for calculation of
2nd order loads in time domain.
The application case will be the low-frequency motions of a floating
wind turbine.
Reference paper is:
B.Teng & Cong P.W., 2017.: “A novel decomposition of the quadratic
transfer function (QTF) for the time-domain simulation of non-linear
wave forces on floating bodies”, Applied Ocean Research 65.
SCOPE OF WORK:
* Theoretical considerations
* Numerical developments
* Verifications, comparisons and validation
REQUIREMENTS:
Open to candidates pursuing an engineering degree (Master degree
equivalent in engineering school or university).
* Strong background in marine hydrodynamics
* Programing skills (Python, Fortran…)
* Strong scientific interest
Duration of the internship : 6 months with a beginning between
February & May 2022
This internship is to be formalised through a formal agreement between
the school/university, the student and the company.
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employee shall receive less favourable treatment because of their
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colour, race, ethnic origin, religion, disability or age.
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