[salame]

Hi, Foamers:
i run the tutorial of multiphaseInterFoam, met some questions about the dambreak4phase.
First: in the "alphaair" of "0" folder ,
...
boundaryField
{
leftWall
{
type alphaContactAngle;
thetaProperties
(
( water air ) 90 0 0 0
( oil air ) 90 0 0 0
( mercury air ) 90 0 0 0
( water oil ) 90 0 0 0
( water mercury ) 90 0 0 0
( oil mercury ) 90 0 0 0
);
value uniform 0;
....
what's the means of value? If means the percent of air, a part of leftwall contact air, why can it write the "value" of zero?

second: In the file <setFieldDict> of "system" folder,
...
regions
(
boxToCell
{
box ( 0 0 -1 ) ( 0.1461 0.292 1 );
fieldValues
(
volScalarFieldValue alphaWater 1
...
boxToCell
{
box ( 0 0 -1 ) ( 0.1461 0.1 1 );
fieldValues
(
volScalarFieldValue alphaWater 0
volScalarFieldValue alphaOil 0
volScalarFieldValue alphaMercury 1
...

in my eyes,a part of both water and Mercury are superposition, box (0 0 -1) (0.1461 0.1 1) . Can someone tell me why?
thanks in advance!

[salame]

Hi, still need your explaining.
From the http://www.cfd-online.com/Forums/ope...on-nozzle.html,
he writed the "alphair" not like this:
internalField uniform 0;

boundaryField
{
leftWall
{
type alphaContactAngle;
thetaProperties
(
( water air ) 90 0 0 0
( oil air ) 90 0 0 0
( mercury air ) 90 0 0 0
( water oil ) 90 0 0 0
( water mercury ) 90 0 0 0
( oil mercury ) 90 0 0 0
);
value uniform 0;
}
......

why?