Thanks a lot! On Sat, Apr 11, 2020 at 9:25 PM Cassinelli, Andrea < andrea.cassinelli15@imperial.ac.uk> wrote:
Hi Reda,
It is possible to adopt convective boundary conditions for quasi-3D simulations. The boundary conditions for the outflow boundary are specified as follows:
<R VAR="u" USERDEFINEDTYPE="HOutflow" VALUE="0" PRIMCOEFF="D0/TimeStep"/> <R VAR="v" USERDEFINEDTYPE="HOutflow" VALUE="0" PRIMCOEFF="D0/TimeStep"/> <R VAR="w" USERDEFINEDTYPE="HOutflow" VALUE="0" PRIMCOEFF="D0/TimeStep"/> <R VAR="p" USERDEFINEDTYPE="HOutflow" VALUE="0" PRIMCOEFF= "1.0/(D0*Kinvis)”/>
The w-component being the same as u,v.
Kind regards,
*Andrea Cassinelli* PhD candidate Department of Aeronautics Imperial College London London SW7 2AZ Mob.: +44 (0)7956957642
On 11 Apr 2020, at 20:14, Moto Light <redamansyhh@gmail.com> wrote:
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Hi All, First i wish all of you are fine and these bad days will past and you always be healthy, I am asking if I can implement *convective boundary conditions* in Quasi-3D simulations for my cases, for now i am using Robin boundary conditions for my 2D cases but still have a problem in Quasi-3D cases.
any ideas for this outlet boundary conditions for my case
*I am using for 2D * ---------------------------- <REGION REF="5"> <!-- Outlet --> <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)" /> </REGION> --------------------
*and for my *Quasi-3D* using* -------------------------------------------- <REGION REF="5"> <!-- Outlet --> <N VAR="u" USERDEFINEDTYPE="HOutflow" VALUE="0" /> <N VAR="v" USERDEFINEDTYPE="HOutflow" VALUE="0" /> <N VAR="w" USERDEFINEDTYPE="HOutflow" VALUE="0" /> <D VAR="p" USERDEFINEDTYPE="HOutflow" VALUE="0" /> </REGION> ---------------------------------------
is there any modifications in the new ver 5.0 regarding outlet boundary conditions?
Thanks, Regards,
Reda UPC Spain _______________________________________________ Nektar-users mailing list Nektar-users@imperial.ac.uk https://mailman.ic.ac.uk/mailman/listinfo/nektar-users