Welcome on the TrioCFD website
TrioCFD (previously named "Trio_U") is a programmable software for Computational Fluid Dynamics (CFD) code, based on the TRUST platform (TRio_U Software for Thermohydraulics).

It is developed in the Thermohydraulics Service and Fluid Mechanics (STMF) of the Department of Nuclear Energy at the CEA.

The qualities of the TrioCFD code are based on a multidisciplinary research team in physical modeling, numerical analysis and software architecture.

The physical models developed, the numerical methods used and the massive parallelism of the TrioCFD code allow to simulate various problems, going from local simulations of two-phase flows to simulations of turbulent flows on industrial facilities such as portions of nuclear reactors.
More information on numerical methods
Some examples of CFD applications
More information about the TrioCFD project

Applications of the Trio_U code Research activities in the Trio_U project Couplings in Trio_U Architecture of the Trio_U code Presentation of the Trio_U project

TrioCFD Seminar 2017

Dear all,

We are glad to welcome you at the 2nd TrioCFD seminar which will be held in room B6 at INSTN-Saclay on Tuesday the 20th of June 2017. The access map is available here:

Please find below the detailed program of the day.

In order to register, please send an email to Celine LEFEUVRE <> before the 9th of June.

We are looking forward to seeing you,
TrioCFD team

TrioCFD seminar -- Program

9:00 Welcome Coffee

9:30 Introduction D. Gallo, P. Blanc-Tranchant (CEA/Saclay)
9:45 Latest news and prospects in TrioCFD M.A. Puscas (CEA/Saclay)
10:10 Simulation of unsteady fluid forces in a PWR rod bundle downstream of mixing grids S. Delafontaine (CEA/CAD)

10:40 Break

11:00 Applications of the Front-Tracking algorithm of TrioCFD: pool boiling and turbulent bubbly flows G. Bois (CEA/Saclay)
11:30 Multiscale modelling of the ASTRID reactor coupling TrioCFD to the CATHARE and TrioMC codes A. Gerschenfeld (CEA/Saclay)

12:00 Lunch

13:30 CFD in support of corium pool modeling M. Peybernes, L. Saas (CEA/CAD)
14:00 A priori tests of large eddy simulation models for low Mach number very anisother-mal turbulent flows D. Dupuy, A. Toutant (Perpignan Unviversity)
14:30 Applications of Trio-CFD for non-nuclear and nuclear hydrogen safety E. Saikali, G. Bernard-Michel and E. Studer (CEA/Saclay)

15:00 Break

15:30 Analysis of buoyancy-driven flow in the ROCOM test facility Q. Feng, U. Bieder, T. Höhne (CEA/Saclay)
16:00 Numerical simulation of the forces exerted on a tube bundle subjected to transverse flow by means of the code TrioCFD S. Houbar, J. Cardolaccia, U. Bieder (SIEMENS and CEA/Saclay)

16:30 Conclusions


  Simulation at the scale of a nuclear reactor

  The last TrioCFD simulations

Direct numerical simulation of boiling


TRIO U - Last update : 23/06/2017 09:33:57 - Legal Notice
© CEA 2003-2017 All Rights Reserved