Number Density Reconstruction
Use the Number Density Reconstruction node to compute the number density on interior domains, boundaries, edges, or points at the time of solving the model.
In addition to the Number Density Reconstruction features the Free Molecular Flow interface also includes an operator that can be used in postprocessing or in the absence of geometry elements to select. The number density operator is called in the following manner:
comp1.fmf.nop_name(x,y,z) (3D)
comp1.fmf.nop_name(x,y) (2D)
comp1.fmf.nop_name(r,z) (2D axisymmetric)
where name is the dependent variable name for a given species. The default is G, so comp1.fmf.nop_G(x,y,z) would be the default operator to compute the number density in 3D. If there are multiple components or Free Molecular Flow interfaces in the model, change the component name comp1 and physics interface name fmf accordingly.