A few options for obtaining TBR values

Use existing database and interpolation - option 1

Generate a new database of TBR values - option 2

  • Using Nova to calculate the neutron wall loading                              

 

  • Simulate many 1D neutronics models (spherical) with different materials and blanket thicknesses and obtain TBR.

 

  • Predict TBR by knowing the neutron wall loading on each module and 1D neutronics results for a representation of the module (material and thickness)

Generate a new database of TBR values - option 3

  • Use Nova generated geometry (STL) and Serpent to perform 3D simulation and calculate TBR.

 

  • Repeat for many models and build build the database                      

Generate a new database of TBR values - option 3

  • Example Serpent input file with Nova STL files and TBR tally

Generate a new database of TBR values - option 3

  • Example simulation times on 1 core
number of particles simulated TBR Error (1 sigma) CPU time for neutron transport simulation (s)
100 1.2 0.17349 1.05
1,000 1.15 0.03343 4.74
2,500 1.09 0.02032 11.1
5,000 1.05 0.014 21.1
10,000 1.11 0.0081 42.7
20,000 1.08 0.00636 84.6
100,000 1.09 0.00263 417.6

7mins

Generate a new database of TBR values - option 4

  • Use Nova generated geometry (STEP) and MCNP to perform 3D simulation and calculate TBR.

 

  • Convert STEP file to constructive solid geometry (CSG) using McCad or MCam                          

 

  • Repeat for many models and build build the database                       

Generate a new database of TBR values - option 5

  • Use Nova generated geometry (STEP) and MCNP to perform 3D simulation and calculate TBR.

 

  • Convert STEP file to unstructured mesh geometry using Trelis or SnappyHexMesh

 

  • Repeat for many models and build build the database                      

Generate TBR values on the fly

Use Nova generated geometry (STL) and Serpent to perform 3D simulation and calculate TBR.

TBR simulations

By Jonathan Shimwell

TBR simulations

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