OOF2: The Manual

Field Discontinuity (JumpBC)
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Name

Field Discontinuity (JumpBC) — Jump in a field value across a boundary

Synopsis

JumpBC(field,field_component,jump_value,independent,boundary)

Details

  • Base class: BC

  • Parameters:

    field
    Type: A Field object.
    field_component
    Type: A character string representing a field or flux index (eg, 'x').
    jump_value
    Value for the field jump or discontinuity Type: A real number.
    independent
    Ignore jump value? Type: Boolean, 0 (false) or 1 (true).
    boundary
    Edge boundary to which this condition applies. Type: The name of an edge boundary in a mesh.

Description

This boundary condition imposes a finite jump in the value of a field across an interface or boundary. The 'sense' of the jump refers to the field value on the node to the right of the boundary relative to the field value on the node to the left of the boundary. If independent is set to True, then no constraints are specified between the field values. When no boundary conditions for the field are specified across an interface, hidden Floating boundary conditions are automatically created that keep the field value continuous across the boundary when the finite element system is solved.

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