Difference between pressure and average pressure

Sajeda Akter · Post by **Sajeda Akter** » Sat May 11, 2019 1:36 am

Hello everyone

I would like to know about the pressure and average pressure. Are there any mathematical formulae on these topics. In my simulation results I observed that average pressure better than only pressure. If there are documents or links please send to me at sajedaekram2010@gmail.com

Thank you in advanced

David Parker · Post by **David Parker** » Mon May 13, 2019 4:02 pm

Hi Sajeda,

Your question is a bit vague. Average pressures are calculated over the inlet / outlet faces of the model and are stored in the all_results-pressures.txt file.

Have a look here http://simvascular.github.io/docsFlowSo ... ostprocess

Cheers,
Dave

Sajeda Akter · Post by **Sajeda Akter** » Mon May 13, 2019 10:11 pm

Thank you David...

But in cylinder tutorial, I see the color bar (attached an image) where the lower and upper values are same i.e. 100 mmHg. Is it feasible or not?
I would like to know about the pressure and average pressure theoretical concepts. Are there any document about these topics?

Thanks again...

David Parker · Post by **David Parker** » Wed May 15, 2019 10:25 am

Hi Sajeda,

The resistance boundary condition maintains the outlet pressure at 100 mmHg so the results do make sense.

Have a look at the SimVascular documentation (http://simvascular.github.io/docsFlowSolver.html). Here is a nice paper describing outflow boundary conditions (https://www.scorec.rpi.edu/REPORTS/2006-22.pdf).

Cheers,
Dave

Difference between pressure and average pressure

Difference between pressure and average pressure

Re: Difference between pressure and average pressure

Re: Difference between pressure and average pressure

Re: Difference between pressure and average pressure