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Forums
Engineering
Nuclear Engineering
MCNP FMESH for Plotting power distribution
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[QUOTE="rpp, post: 6865193, member: 527029"] I don't think FMESH is going to work for you because FMESH uses an x-y-z grid and your reactor geometry is hexagonal. Even if your reactor was on a square grid, it still uses circular fuel rods, so FMESH isn't going to work. What are you transferring to the CFD calculation? As [USER=732225]@Grelbr42[/USER] suggested, if you are transferring the fission power from the rods, you need to define F6 tallies for each of your fuel rods. You also need to be very careful with the normalization. Make sure you are getting all the reactions (flux times fission times energy per fission) and the volume in the tally is correct. If you are transferring energy from downscatter and gamma capture in the moderator, you will need to define F6 tallies for these regions as well. You will have to manually map the power from each tally number to the correct region(s) in your CFD model. [/QUOTE]
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Engineering
Nuclear Engineering
MCNP FMESH for Plotting power distribution
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