[daru]

Hello,
I have been recently working on vehicle aerodynamics. To start off, I ran an analysis on the Ahmed body and got accurate results.

Having applied the same procedure to more complex geometry (read solar car)
I seem to have gotten erroneous results.

• Max skewness 0.92
• Body of influence - one around the car, a finer one in the wake
• Pressure based steady state solver
• Energy off, Realizable k-eps, non-eq wall fns
• Solution method - coupled
• Under-relaxation factors - default

I used hybrid initialization. Solution converged in under 500 iterations.

The issue is, when I plotted the velocity contours on my symmetry plane I got this (pl. refer velocity_mag.jpg)

So, I wonder what's wrong and how to interpret this result.

Thank you
An inexperienced, undergraduate CFD enthusiast.

[umangsrivastava]

Originally Posted by daru

Hello,
I have been recently working on vehicle aerodynamics. To start off, I ran an analysis on the Ahmed body and got accurate results.

Having applied the same procedure to more complex geometry (read solar car)
I seem to have gotten erroneous results.

• Max skewness 0.92
• Body of influence - one around the car, a finer one in the wake
• Pressure based steady state solver
• Energy off, Realizable k-eps, non-eq wall fns
• Solution method - coupled
• Under-relaxation factors - default

I used hybrid initialization. Solution converged in under 500 iterations.

The issue is, when I plotted the velocity contours on my symmetry plane I got this (pl. refer velocity_mag.jpg)

So, I wonder what's wrong and how to interpret this result.

Thank you
An inexperienced, undergraduate CFD enthusiast.

Hello Daru,

Seems, you are doing post processing in parallel mode.

Try to do the post processing in serial mode and have a look on plot.