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Job Record #18012
TitlePostDoc: Study of the best LARS config on an autonomous ship
CategoryJob in Academia
EmployerEcole Centrale de Nantes
LocationFrance, Nantes
InternationalYes, international applications are welcome
Closure Date* None *
Description:
The use of remotely operated underwater vehicles (ROVs) is set to increase all 
over the world in the years to come, driven by the growing needs of the offshore 
industries (Oil & Gas, MRE) and the communications sector (intercontinental 
cable laying projects). The Ecole Centrale de Nantes is participating in a 
project that aims to improve the entire chain of operations leading to the 
launching and recovery of a ROV.
These operations of launching and lifting the ROV-TMS assembly are critical, in 
particular during severe environmental conditions with possibly strong waves, 
high wind speeds, and strong current. The design of the ships and the Launch and 
Recovery System (LARS) must be carried out accounting for the forces encountered 
during sometimes violent events with flows likely to damage equipment or disrupt 
operations.
The hydrodynamic problem is complex (proximity of the ROV to the hull, movements 
of the ship and the ROV), it is therefore necessary to set up a calculation 
chain which makes it possible to couple the generation of waves to the 
hydrodynamic and mechanical solvers, but also to anticipate other aspects such 
as control. The scope will be further specified according to the needs of the 
project.

The numerical simulation will focus on a ship with a handling device of the ROV-
TMS system, i.e. a LARS, considering several configurations.
The modeling will be done in 2 phases, first using linearized models built on 
the potential flow theory, which represents the basic element of the codes used 
in naval engineering to take into account the interactions between the structure 
and the environment. From this first phase, remarkable conditions will be 
identified and the study will be extended using a "Computational Fluid Dynamics 
(CFD)" code which is more expensive but which makes it possible to consider the 
complex problem and to have a better understanding of the flow at the local 
level. The CFD codes preselected for this activity are a version of the OpenFOAM 
opensource code developed in the laboratory which has specific functionalities 
for the generation of sea states thanks to the coupling with the potential 
nonlinear code HOS-NWT.

We are looking with a candidate holding a PhD, with experience in Naval 
Architecture and/or Ocean Engineering. Previous experience with OpenFOAM would 
be greatly appreciated
Contact Information:
Please mention the CFD Jobs Database, record #18012 when responding to this ad.
NameBenjamin Bouscasse
Emailbenjamin.bouscasse@ec-nantes.fr
Email ApplicationYes
Phone0240371558
Address1 rue de la Noe
Record Data:
Last Modified12:17:43, Monday, September 12, 2022

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