Mesh

class wfds.Mesh(x_dom, y_dom, z_dom, res, num_meshes)[source]

Bases: object

The Mesh class can be used to easily and quickly calculate the input parameters needed to define FDS meshes. It is inherited by the WFDS and GenerateBinaryGrid classes. It has two callable (non-private) methods: stretch_mesh() and format_mesh()

Parameters:
  • x_dom (integer) – X dimension of the simulation domain
  • y_dom (integer) – Y dimension of the simulation domain
  • z_dom (integer) – Z dimension of the simulation domain
  • res (float) – 3-space resolution prior to mesh stretching
  • num_meshes (integer) – Number of meshes
Example: 
>>> import wfds
>>> mesh = wfds.Mesh(160,90,50,1,9)
>>> mesh.stretch_mesh([3,33], [1,31])
>>> print mesh.format_mesh()
format_mesh()[source]

Formats a mesh for the WFDS input file.

Returns:formated WFDS mesh
Return type:string
stretch_mesh(comp_coord, phys_coord)[source]

Defines the parameters for stretching a the mesh along the z axis, distorting the cell sizes. Passes the two sets of coordinates to the self.stretch variable which will be accessed by the format_mesh() method to format the WFDS input file.

Parameters:
  • comp_coord (python list) – computation coordinates
  • phys_coord (python list) – physical coordinates

Note

comp_coord and phys_coord must have an equal number of elements.See the FDS users guide for more information on stretching: https://pages.nist.gov/fds-smv/manuals.html

Example: 
>>> mesh = wfds.Mesh(200, 150, 100, 1, 1)
>>> mesh.stretch_mesh([3,33], [1,31])
>>> print mesh.format_mesh()