Class fetchr#
Defined in File fetchr.hpp
Inheritance Relationships#
Base Type#
public module_base(Class module_base)
Class Documentation#
-
class fetchr : public module_base#
Calculates upwind fetch distances. The fetch is broken if a triangle at distance
d * I> current triangle’s elevation.Depends:
Wind direction “vw_dir” [degrees]
Provides:
Fetch distance “fetch” [m]
Configuration:
{ "steps": 10, "max_distance": 1000 }
- steps#
Number of steps along the search vector to check for a higher point
- max_distance#
Maximum search distance to look for a higher point
- I#
Rise/run threshold to multiply against the distance of a test triangle.
References:
Lapen, D. R., and L. W. Martz (1993), The measurement of two simple topographic indices of wind sheltering-exposure from raster digital elevation models, Comput. Geosci., 19(6), 769–779, doi:10.1016/0098-3004(93)90049-B.
- Type:
int
- Default:
10
- Type:
double
- Default:
1000 m
- Type:
double
- Default:
0.06
Public Functions
-
fetchr(config_file cfg)#
-
~fetchr()#
-
virtual void run(mesh_elem &face)#
Needs to be implemented by each data parallel module. This will be called and executed for each timestep
- Parameters:
face – The terrain element (triangle) to be worked upon for an element parallel domain
global_param – A pointer to the shared global paramter space with domain-wide paramters