CFD Online Discussion Forums

CFD Online Discussion Forums (https://www.cfd-online.com/Forums/)
-   CFX (https://www.cfd-online.com/Forums/cfx/)
-   -   wall boundary conditions (https://www.cfd-online.com/Forums/cfx/26283-wall-boundary-conditions.html)

sivaramakrishnaiah August 20, 2008 23:48

wall boundary conditions
 
hi what is meant by rotating wall,how to give in CFX-11

MAB August 21, 2008 10:14

Re: wall boundary conditions
 
the wall would rotate with a sepecified velocity( angular velocity)

sivaramakrishnaiah August 21, 2008 10:25

Re: wall boundary conditions
 
i given in that some error is showing my boundary conditions: inlet:pressure 7.5bar and tem;167C outlet i given mass flow rate:0.3kg/s fluid:steam

ERROR #002100048 has occurred in subroutine SU_BNEXT. | | Message: | | All vertices for a fluid domain lie on boundaries. This is | | considered to be a fatal error because control volume gradients | | cannot be calculated, leading to serious discretization error. | | | | A common cause for this error is a mesh which is only one | | element thick, without symmetry or 1:1 periodicity on the lateral | | boundaries. If you have this situation, and the domain is | | two-dimensional, please change the lateral boundary conditions | | to symmetry or 1:1 periodicity. Alternatively, for | | three-dimensional simulations, please ensure that your mesh | | has at least two elements across. | | | | Execution is terminating. This error message can be bypassed by | | setting the expert parameter 'boundary vertex check = f', but | | be aware that doing so may lead to sigificant solution error. | +--------------------------------------------------------------------+


All times are GMT -4. The time now is 10:58.