Boundary Conditions¶

class BoundaryCondition¶

name¶: Gets the name of the boundary condition, i.e. “top”, “bottom”, etc..

kind¶: The ‘kind’ of the boundary condition, i.e. “PERIODIC”, “FREESLIP”, or “VELOCITY”

velocity¶: gets / sets the velocity of the boundary, a length-3 vector. Note a “no-slip” boundary is just a “velocity” boundary with a zero velocity vector.

normal¶: get the normal vector of the boundary, points into the simulation domain.

restore¶: gets / sets the restoring percent. When objects hit this boundary, they get reflected back at restore percent, so if restore is 0.5, and object hitting the boundary at 3 length / time recoils with a velocity of 1.5 lengths / time.

class Boundaryconditions¶

The BoundaryConditions class really just serves as a contianer for the six instances of the BoundaryCondition object:

left¶

right¶

front¶

back¶

bottom¶

top¶

Boundary Condition Constants¶

BOUNDARY_NONE¶: no boundary conditions

PERIODIC_X¶: periodic in the x direction

PERIODIC_Y¶: periodic in the y direction

PERIODIC_Z¶: periodic in the z direction

PERIODIC_FULL¶: periodic in all directions

PERIODIC_GHOST_X¶

PERIODIC_GHOST_Y¶

PERIODIC_GHOST_Z¶

PERIODIC_GHOST_FULL¶

FREESLIP_X¶: free slip in the x direction

FREESLIP_Y¶: free slip in the y direction

FREESLIP_Z¶: free slip in the z direction

FREESLIP_FULL¶: free slip in all directions