Have a look at one of Dong's his papers referring to it. https://arxiv.org/pdf/1506.01320.pdf. page 7.

the dimensional units are seconds. "plays the role of a convection velocity scale at the outflow boundary"

you can also set the variable in the parameters section i.e.

</PARAMETERS>

~Kurt

On Mon, Aug 20, 2018 at 8:03 AM Amitvikram Dutta <amitvdutta23@gmail.com> wrote:

Hi all,

I have been trying to implement the stabilised outflow BCs as given by DOng and included in the User guide as follows
<R VAR="u" USERDEFINEDTYPE="HOutflow" VALUE="0" PRIMCOEFF="D0/TimeStep"/>

<R VAR="v" USERDEFINEDTYPE="HOutflow" VALUE="0" PRIMCOEFF="D0/TimeStep"/>

<R VAR="p" USERDEFINEDTYPE="HOutflow" VALUE="0" PRIMCOEFF="1.0/(D0*Kinvis)"/>

What does the parameter Do represent? Is it a flow quantity?Also, how do I set it within the xml file?

Sincerely,
--
Amitvikram Dutta

Graduate Research Assistant

Fluid Mechanics Research Lab
Multi-Physics Interaction Lab

University of Waterloo

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