La distribution Version4

What is the Version4 project

Version4 is a recent distribution of the reactor physics codes developed at École Polytechnique de Montréal. Frequently asked questions about Version4 are answered in our FAQ page.

The Version4 distribution includes the following code components :

1. NJOY-based library production system :
   1. A new module DRAGR in NJOY-99 to produce Dragon-formatted libraries
   2. A Python script PyNjoy.py to automate the library production steps.
2. Dragon Version4, a full-feature lattice code :
   1. Dragon Version4 remains compatible with WIMS-D4 libraries of the WLUP project
   2. XMAS (172-group) and SHEM (281-, 295- and 361-group) Draglib-formatted open-source libraries
   3. NXT: module (new-generation Excell tracking)
   4. Self-shielding USS: module based on the subgroup equations
   5. Isotropic streaming model ECCO in FLU: (for space-dependent diffusion coefficient calculations)
   6. Asymptotic SPH method for reflector model
   7. SPH method with all Bivac and Trivac finite elements discretizations in 1D, 2D and 3D
   8. Multi-parameter MULTICOMPO database (creation and interpolation)
   9. Capability to use the characteristic method for self-shielding, leakage, flux and SPH calculations
   10. Discrete ordinates capabilities in 1D, 2D and 3D geometries.
   11. Availability of the double-heterogeneity model (Hebert or Sanchez-Pomraning model) with the method of collision probability (Sybil, Excell or NXT), the method of characteristics (Excell or NXT) and the discrete ordinates method
   12. Multigroup Monte Carlo method based on the Woodcock rejection method with NXT: - based geometries
   13. Solution of fixed source eigenvalue equations (GPT-type) in FLU:.
3. Trivac Version4, a 1D/2D/3D full-core flux solver :
   1. Diffusion-theory and simplified PN Raviart-Thomas finite elements in Cartesian 1D/2D/3D geometry for full-core models
   2. Diffusion-theory and simplified PN Raviart-Thomas-Schneider finite elements in hexagonal 2D/3D geometry for full-core models
   3. Space-time kinetics calculations with the theta method.
4. Donjon Version4 is available for full-core operation studies:
   1. Interpolation modules for databases in many formats: Multicompo, Compo, Saphyb, AFM (feedback database). The Macrolib format of Dragon Version4 is used natively
   2. Reactor's fuel map management modules
   3. Device management modules, including solid rods and liquid zone controllers
   4. Simplified thermal-hydraulics module.
5. Optex Version4 is available for time-averaged full-core optimization.

Version4 is compatible with Unix boxes (including Linux and MacOSX) and lambda PCs.

Downloading project's components

If you want to download a user's guide or a working copy of Version4, please go here.

If you want to download a multigroup cross-section library in Draglib format, please go here.

Issue report form

If you want to issue a bug report, an assistance request or a development suggestion, please go here.

Version4 is owned by: École Polytechnique de Montréal
For more information contact: Alain Hébert