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Old   June 20, 2005, 22:28
Default The periodic condition can be
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Luckyluke
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The periodic condition can be defined as follows:
sides
{
type cyclic;
value uniform (0 0 0);
}
The entry term 'value' confused me. What is the exact meaning of this term?
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Old   June 21, 2005, 04:31
Default The entry term 'value' gives t
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The entry term 'value' gives the field value on the patch.
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Old   June 21, 2005, 07:18
Default I use cyclic condition for 'Ga
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I use cyclic condition for 'Gamma' when I solve RT instability with interFoam.
sides
{
type cyclic;
value uniform 0;
}

Does the entry 'value' act as only an initial setting? After I run 'setGammaDamBreak', the value of Gamma of boundary 'sides' will be not zero,but determined by 'setGammaDamBreak'. Is it right?
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Old   June 21, 2005, 08:09
Default Of course it's only the initia
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Of course it's only the initial value, did you really think all boundary condition values are fixed to the value given?
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Old   June 21, 2005, 09:08
Default That is ok. ^_^. With your gam
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That is ok. ^_^. With your gamma*(1-gamma) and gamma differencing scheme, I have got beautiful 3D RT instability interface structure. If I delete the gamma*(1-gamma) term and apply only the GD scheme, the sharp interface will be lost, right? I am not very clear with the effect on sharp interface intruduced by gamma*(1-gamma) term. How does it compress the interface?

By the way, if I use wall condition on my 'sides' boundary,
sides
{
type gammaContactAngle;
theta0 90;
thetaA 90;
thetaR 90;
uTheta 0.01;
value uniform 0;
}
Then here how the 'value' entry affect the values on the patch? Will the gamma on the patch change when time goes?
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Old   June 21, 2005, 09:41
Default Why not find out for yourself,
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Why not find out for yourself, you will learn more that way and without consuming other peoples time.
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