Editing Input syntax manual (section)

=== mesh (mesh plot definition)<span id="mesh"></span> ===

 '''mesh''' ''ORI'' ''XPIX'' ''YPIX'' [ ''SYM'' ''MIN<sub>1</sub>'' ''MAX<sub>1</sub>'' ''MIN<sub>2</sub>'' ''MAX<sub>2</sub>'' ''MIN<sub>3</sub>'' ''MAX<sub>3</sub>'' ]

 '''mesh''' 8 ''CMAP'' ''DET'' ''ORI'' ''XPIX'' ''YPIX'' [ ''SYM'' ''MIN<sub>1</sub>'' ''MAX<sub>1</sub>'' ''MIN<sub>2</sub>'' ''MAX<sub>2</sub>'' ''MIN<sub>3</sub>'' ''MAX<sub>3</sub>'' ]

 '''mesh''' 10 ''ORI'' ''XPIX'' ''YPIX''

Produces a png-format mesh plot of various results. Input values:

{|
| <tt>''ORI''</tt> 
| : orientation with respect to coordinate axes
|-
| <tt>''XPIX''</tt>
| : horizontal image size [in pixels]
|-
| <tt>''YPIX''</tt>
| : vertical image size [in pixels]
|-
| <tt>''SYM''</tt>
| : symmetry option (not used in Serpent 2)
|-
| <tt>''MIN<sub>n</sub>'' ''MAX<sub>n</sub>''</tt>
| : boundaries of the plotted region [in cm]
|-
| <tt>''CMAP''</tt>
| : color map used for plotting detector scores (positive entry for linear, negative for log-scale)
|-
| <tt>''DET''</tt>
| : detector name
|}

<u>Notes:</u>

*The first format produces a mesh plot where fission rate and thermal flux distribution are plotted using hot and cold color schemes, respectively. This type of mesh plot is convenient for illustrating the neutronics of thermal systems. The orientation parameter defines the coordinate axis perpendicular to the plot plane: 1 - x-axis (projection on yz-plane); 2 - y-axis (projection on xz-plane); 3 - z-axis (projection on xy-plane).
*The second format produces a mesh plot of all scores contributing to a detector. The additional input parameters are the detector name and the color map used in the plot.
*The third format generates a mesh-plot of the temperature distribution. This can be a good way to check the temperature distribution, provided by an external solver, during a coupled calculation.
*The color maps are: 1 - hot; 2 - cold; 4 - jet; 5 - black and white; 6 - hsv; 7 - spring; 8 - summer; 9 - autumn; 10 - winter; 11 - green-purple; 12 - purple-orange; 13 - blue-red. Many of these correspond to what is used in Matlab. Logarithmic scale is used if the number is given with a minus sign.
*Detector scores are collected in the mesh cells (see the [[#det|detector card]] and the [[ENDF reaction MT's and macroscopic reaction numbers|list of ENDF reaction MT's and special reaction types]] for more information). The distribution is scaled according to the minimum and maximum values.
*Some special detector types, such as pulse-height detectors and analog photon heating detectors cannot be associated with mesh plots.
*The mesh plot always produces results that are integrated over space. If no boundaries are provided, the integration is carried over the entire geometry.
*Setting the orientation parameter of a detector mesh plot to 4 produces a plot in cylindrical coordinates. Instead of Cartesian boundaries the entered values are then the radius and axial coordinate.
*The symmetry option was used in Serpent 1. The parameter must be provided for Serpent 2 as well, even though it is not used. The value can be set to zero.
*Mesh plot produced by the nth mesh-card is written in file <tt>[input]_mesh[n].png</tt>.