G-MET Technologies - Nuclear Research and industry

Nuclear Research and Industry

Our involvement and direct clients in the nuclear

G-MET Technologies is a consulting firm strongly involved in nuclear research since its creation.

This sector represents the majority of studies processed by G-MET Technologies, which has developed recognized expertise in the field.

Our team of engineers is trained and aware of the constraints and criteria imposed by nuclear safety. Furthermore, G-MET Technologies is involved, both on nuclear fission projects (RJH experimental reactor, experimental nuclear device, PWR reactor) and fusion (ITER reactor), therefore we use the latest methodologies in numerical simulation.

G-MET Technologies has national master agreements with CEA and the IRSN and worked directly for ITER project.

Typical applications

We have advanced knowledge of thermohydraulic and thermomechanical subjects in this field. As a matter of fact, we for instance, have worked on various projects such as :

ITER, ANSYS, CEA, iteration, RJH, RCCM, CATHARE, IRSN, EDF, APRR, énergie nucléaire, bureau d’etude, simulation, dispositif, irradiation, séismologie, thermomecanique, transfer thermique, nuclear, nuclear energy, nuclear power plant, nuclear reactor, nuclear engineering, nucléaire France, nucléaire définition, nucléaire énergie fossile, nucléaire civile, nuclear fusion, nuclear acid, nuclear power trio, engineer, engineer data, engineer electrical, engineer jobs, engineer design process, engineer tf2, case study case study example, naval, naval ship, naval news, naval groupe, naval group cherbourg, naval groupe ollioules, naval group news, naval energies, naval craft, CFD, Open source, build, marine, industry process,

PWR reactor

All component of a PWR. Vessel description and modeling including porous media approach, thermal and turbulence effects. CFD/FEA/CATHARE tools

Nuclear experimental device

Thermohydraulic and thermomechanics simulations. Radiation and heat sources modeling. RCCM sizing. CFD/FEA/CATHARE tools

Experimental reactor

ITER, RJH...

Experimental nuclear facility

Simulations of experimental nuclear facility. Benchmarking, safety analysis. CFD/FEA/CATHARE tools

Steam generator and bundles

Steam generator, heat exchanger or rod bundle simulations. Porous media approach, directional pressure drop. Phase change. CFD/FEA/CATHARE tools

Nuclear Storage Pool during an Earthquake

This video illustrates an example of a sloshing kind of simulation in the case of a nuclear fuel storage pool subjected to an earthquake.
The accelerogram used in this simulation is fixed and the results obtained are therefore purely illustrative.
Furthermore, the underlying objective is to calculate the forces on the concrete walls in order to verify the civil engineering dimensioning.
Finally, the simulation is carried out using marineFoam, a VoF / GFM solver developed under one of our favorite tools: OpenFOAM.

Blow out simulation - two-phases flow

This video illustrates an example of a incompressible two-phases flow application for nuclear and research industry. The purpose of this simuation was to calculate the water draining transient of a pipe network. This simulation is rather large since the mesh size is about 52 M cells.

The amount of result data was about 40 To.

The simulation is carried out using a special VoF solver solver developed under one of our favorite tools: OpenFOAM.

Thermomechanical transient of a neutron source

This video illustrates the evolution of the stress field of a nuclear irradiation device subjected to a peak of overpower (pressure, nuclear heating).

The nuclear irradiation devices of the RJH reactor are dimensioned according to the RCC-MRx (P, S and buckling damage). The calculations are carried out in significant irradiation.

PWR thermomechanical study

This video illustrates a typical case of calculation for a PWR vessel. The calculations are of thermomechanical type. Furthermore, the dimensioning of this type of component is carried out using the normative codes relating to the nuclear sector: the RCC-M. The principle consists in verifying the structural behavior through several criteria allowing to protect against many types of damages: excessive deformation, plastic instability, elastic and elastoplastic instability, progressive deformation, or fatigue.

Know more about our expertise in numerical simulation

G-MET Technologies is a consulting firm specialized in numerical simulations applied to computational fluid dynamics (CFD), structural mechanics, and heat transfers. In order to know more about us or to get in touch please visit our contact page or click on the button below.