Region definitions

Regions are used to define sections of the domain and are used in defining initial and boundary conditions.

	Description	Type	Default
regions	Names given to regions.	Strings	None
regions.[region_name].shape	Region shape: Options: box cylinder sphere plane disk point	String	None

Box

For each box region, the inputs are defined using the compound prefix regions.[region_name].box:

	Description	Type	Default
lo	Low corner of physical region (physical, not index space)	Reals<3>	0 0 0
hi	High corner of physical region (physical, not index space)	Reals<3>	0 0 0

Below is an example for specifying two regions.

regions  = full-domain   riser

regions.full-domain.shape = box
regions.full-domain.box.lo = 0.0000  0.0000  0.0000
regions.full-domain.box.hi = 3.7584  0.2784  0.2784

regions.riser.shape = box
regions.riser.box.lo = 0.0000  0.0000  0.0000
regions.riser.box.hi = 0.1000  0.2784  0.2784

Cylinder

For each region, the inputs are defined using the compound prefix regions.[region_name].cylinder:

	Description	Type	Default
radius	cylinder radius	Real	None
start	Coordinates of the cylinder’s bottom cap	Reals<3>	0 0 0
end	Coordinates of the cylinder’s top cap	Reals<3>	0 0 0

Sphere

For each region, the inputs are defined using the compound prefix regions.[region_name].sphere:

	Description	Type	Default
radius	Cylinder radius	Real	None
center	Coordinates of the sphere’s center	Reals<3>	0 0 0

Plane

For each region, the inputs are defined using the compound prefix regions.[region_name].plane:

	Description	Type	Default
lo	Low corner of physical region (physical, not index space)	Reals<3>	0 0 0
hi	High corner of physical region (physical, not index space)	Reals<3>	0 0 0

Disk

For each region, the inputs are defined using the compound prefix regions.[region_name].disk:

	Description	Type	Default
radius	Disk radius	Real	None
center	Coordinates of the disk’s center	Reals<3>	0 0 0
normal	Surface normal	Reals<3>	0 0 0

Point

For each region, the inputs are defined using the compound prefix regions.[region_name].point:

	Description	Type	Default
center	Coordinate of point	Reals<3>	0 0 0