Hi Lisa,

I think that step-44 
the type of boundary condition that you are describing here.


On Thursday, October 13, 2016 at 11:47:02 AM UTC+2, Lisa Collins wrote:
> hi,
> I forgot to mention that I want to implement the pressure BC in a vector 
> valued problem.
> a cylinder with a hot pressurized gas inside it.
> Best regards.
> Lisa
> On Thursday, October 13, 2016 at 11:27:08 AM UTC+2, Lisa Collins wrote:
>> Hi, 
>> I just would like to implement a simple constant pressure BC for a solid 
>> material in the referential configuration.
>> Pressure is constant and independent. I want to model a pressurized 
>> cylinder.
>> Thanks.
>> Lisa
>> On Wednesday, October 12, 2016 at 1:39:33 PM UTC+2, Jean-Paul Pelteret 
>> wrote:
>>> Dear Lisa,
>>> There are numerous tutorials that cover the application of pressure BCs 
>>> for various media. Your question is far too general 
>>> <https://groups.google.com/forum/#!topic/dealii/GRZMUTLIm2I> to be 
>>> answered effectively:
>>> - Are you implementing this for a fluid or solid material? 
>>> - If a solid, then are you applying the pressure in the referential 
>>> (i.e. constant load per unit reference area) or spatial configuration (i.e. 
>>> constant load per unit current area)?
>>> - What formulation/FE discretisation are you using? i.e. is the pressure 
>>> an independent variable or not, and is it a continuous or discontinuous 
>>> field?
>>> If you provide more details then perhaps it is possible to provide 
>>> further guidance.
>>> Regards,
>>> J-P
>>> On Wednesday, October 12, 2016 at 12:58:53 PM UTC+2, Lisa Collins wrote:
>>>> Hello,
>>>> How can I implement *Constant pressure boundary condition* on a curved 
>>>> face such as pressurized cylinder.
>>>> In which step this kind of BC is implemented.
>>>> Thanks.
>>>> Lisa

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