tied-biphasic

Module: biphasic

Category: surfaceinteraction

Type string: "tied-biphasic"

Parameters

Name	Description	Default	Units
laugon	Enforcement method	0	[]
tolerance	tolerance	0.1	[]
gaptol	gaptol	-1	[]
ptol	ptol	-1	[]
penalty	penalty	1	[]
auto_penalty	auto_penalty	false	[]
update_penalty	update_penalty	false	[]
two_pass	two_pass	false	[]
knmult	knmult	1	[]
search_tol	search_tol	0.01	[]
pressure_penalty	pressure_penalty	1	[]
symmetric_stiffness	symmetric_stiffness	true	[]
search_radius	search_radius	1	[]
minaug	minaug	0	[]
maxaug	maxaug	10	[]

Description

A tied biphasic interface is similar to the tied interface. It may be used for tying any combination of solid, biphasic, and rigid materials. It enforces continuity of the fluid pressure across the interface when both materials are biphasic.

Please see tied-elastic for a more detailed explanation of the parameters.

In order to model fluid flow across the interface, the user must set the pressure_penalty parameter. This parameter is similar to the penalty parameter, but acts on the pressure gap, i.e. the difference in fluid pressure across the interface.