7.1.2. Geom.geometry_name.Perm.Type

string Geom.geometry_name.Perm.Type [no default]

This key specifies which method is to be used to assign permeability data to the named geometry, geometry_name. It must be either Constant, TurnBands, ParGuass, or PFBFile. The Constant value indicates that a constant is to be assigned to all grid cells within a geometry. The TurnBand value indicates that Tompson’s Turning Bands method is to be used to assign permeability data to all grid cells within a geometry [TAG89]. The ParGauss value indicates that a Parallel Gaussian Simulator method is to be used to assign permeability data to all grid cells within a geometry. The PFBFile value indicates that premeabilities are to be read from the “ParFlow Binary” file. Both the Turning Bands and Parallel Gaussian Simulators generate a random field with correlation lengths in the \(3\) spatial directions given by \(\lambda_x\), \(\lambda_y\), and \(\lambda_z\) with the geometric mean of the log normal field given by \(\mu\) and the standard deviation of the normal field given by \(\sigma\). In generating the field both of these methods can be made to stratify the data, that is follow the top or bottom surface. The generated field can also be made so that the data is normal or log normal, with or without bounds truncation. Turning Bands uses a line process, the number of lines used and the resolution of the process can be changed as well as the maximum normalized frequency \(K_{\rm max}\) and the normalized frequency increment \(\delta K\). The Parallel Gaussian Simulator uses a search neighborhood, the number of simulated points and the number of conditioning points can be changed.

pfset Geom.background.Perm.Type   Constant