What is the difference between FMESH and MESH in MCNP?

  • Thread starter Thread starter 19matthew89
  • Start date Start date
  • Tags Tags
    Cards Mcnp Mesh
Click For Summary
SUMMARY

FMESH and MESH serve distinct purposes in MCNP (Monte Carlo N-Particle Transport Code). FMESH is specifically utilized for tallying mesh data, allowing users to obtain detailed results based on the geometry of the simulation. In contrast, MESH functions primarily as a variance reduction tool, aiding in weight-window generation rather than being directly involved in mesh tallies. Understanding these differences is crucial for effective simulation setup and analysis.

PREREQUISITES
  • Familiarity with MCNP (Monte Carlo N-Particle Transport Code)
  • Understanding of mesh tallies in radiation transport simulations
  • Knowledge of variance reduction techniques in Monte Carlo methods
  • Basic concepts of weight-window generation in MCNP
NEXT STEPS
  • Study the implementation of FMESH in MCNP for detailed tallying
  • Research variance reduction techniques specific to MCNP
  • Explore weight-window generation methods and their impact on simulation efficiency
  • Review case studies utilizing both FMESH and MESH in MCNP simulations
USEFUL FOR

Researchers, nuclear engineers, and simulation specialists looking to optimize their use of MCNP for radiation transport analysis and improve their understanding of mesh-related functionalities.

19matthew89
Messages
46
Reaction score
12
TL;DR
Difference between MESH card and FMESH card
Hi everyone,

I am struggling to understand the difference between FMESH and MESH.
FMESH is used to create a mesh superimposed with the geometry but...what does MESH? Is it only involved in weight-window generation and not needed for mesh tallies?

Thanks in advance for the clarification.
 
Engineering news on Phys.org
I had a read and I'm pretty confident you are right. FMESH is a tally mesh, and MESH is a variance reduction mesh.
 
Reply
  • Like
Likes   Reactions: 19matthew89

Similar threads

MCNP - z-coordinates of cylindrical mesh >0?
  • · Replies 2 ·
Replies
2
Views
2K
MCNP6.2 - Are results of FMESH tallies already divided by cell volume?
  • · Replies 2 ·
Replies
2
Views
2K
Mesh Tally in MCNPX for Dose Calculation / How to Add & Visualize?
  • · Replies 0 ·
Replies
0
Views
804
MCNP: mesh with weight window generator
  • · Replies 1 ·
Replies
1
Views
3K
How can I fix the illegal data signal error in my FMESH tally code in MCNP6?
  • · Replies 1 ·
Replies
1
Views
2K
Is it possible to use TR or TRCL to translate an F4 or FMESH4 tally in MCNP6.2?
  • · Replies 4 ·
Replies
4
Views
4K
MCNP PTRAC card help
  • · Replies 0 ·
Replies
0
Views
1K
If MCNP tallies are normalized, shouldn't they be <1?
  • · Replies 5 ·
Replies
5
Views
3K
Subroutine Sources option in MCNP
  • · Replies 4 ·
Replies
4
Views
3K
MCNP - Tallies definition with "<"
  • · Replies 2 ·
Replies
2
Views
2K