Learning Forum

[wrosendoeng]

Hi,

I'm studying an inviscid compressible flow that I tried to analyze with two different manners:

1. Creating a new Fluent Analysis for each case (12 velocities, from Mach 1 to Mach 3)
2. Using Design Points and defining input/output parameters and solving these 12 velocities.

When I compared both results with my reference values for drag coefficient (CD), the first case presents far better results than second one. Is there any explanation?

Thanks in advance!

[Rob]

What is the initial condition and convergence level for each case?

[DrAmine]

Usually convergence and startup related.