******************* This email originates from outside Imperial. Do not click on links and attachments unless you recognise the sender. If you trust the sender, add them to your safe senders list https://spam.ic.ac.uk/SpamConsole/Senders.aspx to disable email stamping for this address. ******************* 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
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<mailto:redamansyhh@gmail.com>> wrote: This email from redamansyhh@gmail.com<mailto:redamansyhh@gmail.com> originates from outside Imperial. Do not click on links and attachments unless you recognise the sender. If you trust the sender, add them to your safe senders list<https://spam.ic.ac.uk/SpamConsole/Senders.aspx> to disable email stamping for this address. 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<mailto:Nektar-users@imperial.ac.uk> https://mailman.ic.ac.uk/mailman/listinfo/nektar-users
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:
This email from redamansyhh@gmail.com originates from outside Imperial. Do not click on links and attachments unless you recognise the sender. If you trust the sender, add them to your safe senders list <https://spam.ic.ac.uk/SpamConsole/Senders.aspx> to disable email stamping for this address.
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
participants (2)
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Cassinelli, Andrea
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Moto Light