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changed CMFD userguide documentation

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Bryan Herman 2013-07-27 15:10:45 -04:00
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docs/source/usersguide/input.rst
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@ -1131,6 +1131,22 @@ The ``<begin>`` element controls what batch CMFD calculations should begin.
*Default*: 1
``<display>`` Element
---------------------
The ``<display>`` element sets one additional CMFD output column. Options are:
* "balance" - prints the RMS [%] of the resdiual from the neutron balance equation
on CMFD tallies.
* "dominance" - prints the estimated dominance ratio from the CMFD iterations.
**This will only work for power iteration eigensolver**.
* "entropy" - prints the *entropy* of the CMFD predicted fission source.
**Can only be used if OpenMC entropy is active as well**.
* "source" - prints the RMS [%] between the OpenMC fission source and CMFD
fission source.
*Default*: None
``<feedback>`` Element
----------------------
@ -1150,14 +1166,14 @@ with "true" and off with "false"
*Default*: true
``<keff_tol>`` Element
----------------------
``<inactive_flush>`` Element
----------------------------
The ``<keff_tol>`` element specifies acceptance criteria of a CMFD eigenvalue.
If the CMFD eigenvalue and OpenMC batch eigenvalue are within this tolerance,
CMFD is allowed to modify source neutron weights.
The ``<inactive_flush>`` element controls when CMFD tallies are reset during
inactive batches. The integer set here is the interval at which this reset
occurs. The amout of resets is controlled with the ``<num_flushes>`` element.
*Default*: 0.005
*Defualt*: 9999
``<ksp_monitor>`` Element
-------------------------
@ -1241,14 +1257,13 @@ not impact the calculation.
*Default*: 1.0
``<n_procs_cmfd>`` Element
--------------------------
``<num_flushes>`` Element
-------------------------
The ``<n_procs_cmfd>`` element is used to set the number of processors used
for CMFD calculation. It should be less than or equal to the number of
processors used during OpenMC.
The ``<num_flushes>`` element controls the number of CMFD tally resets that
occur during inactive CMFD batches.
*Default*: 1
*Default*: 9999
``<power_monitor>`` Element
---------------------------
@ -1256,26 +1271,33 @@ processors used during OpenMC.
The ``<power_monitor>`` element is used to view the convergence of power iteration.
This option can be turned on with "true" and turned off with "false".
*Default*: false
``<run_adjoint>`` Element
-------------------------
The ``<run_adjoint>`` element can be turned on with "true" to have an adjoint
calculation be performed on the last batch when CMFD is active.
*Default*: false
``<write_balance>`` Element
---------------------------
``<snes_monitor>`` Element
--------------------------
The ``<write_balance>`` element is used to view the balance of OpenMC tally
residuals for every coarse mesh region and energy group. This option can be
turned on with "true" and off with "false".
The ``<snes_monitor>`` element is used to view the convergence of the nonlinear SNES
function in PETSc. This option can be turned on with "true" and turned off with "false".
*Default*: false
``<write_hdf5>`` Element
------------------------
``<solver>`` Element
--------------------
The ``<write_hdf5>`` element can be turned on with "true" to get an
HDF5 output file of CMFD results.
The ``<solver>`` element controls whether the CMFD eigenproblem is solved with
standard power iteration or nonlinear Jacobian-free Newton Krylov (JFNK).
By setting "power", power iteration is used and by setting "jfnk", JFNK is used.
*Default*: false
*Default*: power
``<write_matrices>`` Element
----------------------------