8-fin fan simulation Post-Processing results do not look real testing results

Projects
1

In reference to public project: https://www.simscale.com/workbench/?pid=283126074888810063

The post-processing results do not match real test results. This is opposite of most SimScale to reality tests I have run here where the results SimScale results usually match fairly closely to reality. Please take a look at the successfully run simulation on the above project, and see if I have set something up incorrectly. Thanks.

2

Specifically, the Force and Moment Plot results do not look accurate. The “Pressure Z Force” shows a NEGATIVE value, but reality tests show a positive value of about 100 newtons. In addition, the “Post Processing” views along the x cut plane look very odd; for example it shows NO velocity vectors in some entire sectors, but large vectors in others.