#312 Immersed boundary method -error calculation of Drag coefficient in parallel(in hpc)

[Thamali Rajika Jayawickrama]

I ran a case in foam-extend3.2 using simpleIbFoam for a flow around a sphere.

The Reynold's number of the flow is around 13.96.I ran it in athis hpc system:https://www.hpc2n.umu.se/

The case file can be found here.
https://www.dropbox.com/sh/rk4t0xgfefzzrzc/AADuBvLilUyoD2LFDu0aBZcba?dl=0

First,

I ran it in parallel and then after finishing the case,I tested it in serial.

It gives me different values of both pressure and viscous forces.

And serial results seems correct,since it gives a value around 3.43 for the reynold's number 13.96.Parallel results give high values.

You can reproduce it by running:

1."./Allrun"

2."sbatch submitfile" (in hpc)-I don't know how you will do this :)

3.After residuals are lower than 10-6,run it in serial-"simpleIbFoam"

In the case attaching forces/7650-shows forces in parallel processing

forces/13500-shows forces in serial run