Streamlines and Vorticity

Hey all,

I just want to ask about the streamlines and vorticity how we can be formulated based on LB?

Best,

Unbleivable forum…nobody needs to reply…I’m waiting.

william Wrote:

nobody needs to reply

That said, the procedure is the same for any flow field, whether it is calculated from LBM or otherwise. Paraview can do it, as can a lot of other post-processors.

Bruce

Use finite differencing on the LB stencil to get the functions, or a relaxation method/Poisson solver for the streamfunction. As Bruce says, its post processing.

i calculated streamlines by
streamfun[j+1][i]=streamfun[j][i]+u[j][i]*dy
which is forward Finite difference aprroximation of defination of u=d(streamfun)/dy
for Vorticity,
visit. http://folk.uio.no/jks/matpiv/html/node31.html

Thanks and Regards,

krunal Gangawane Wrote:

i calculated streamlines by

[code=“cpp”]
streamfun[j+1][i]=streamfun[j][i]+u[j][i]*dy



> which is forward Finite difference aprroximation
> of defination of u=d(streamfun)/dy
>  for Vorticity,
> visit.
> http://folk.uio.no/jks/matpiv/html/node31.html
> 
> Thanks and Regards,

I use TECplot to do it. Streamline is a special feature and I need to insert formula to get the vorticity plot.