[Seven277]

Hi all,

Just looking for a little guidance here, quite new to STAR CCM+ so please bear with. I have changed initial conditions (velocities) on my analysis of a 2004 F1 front wing, and it has given out the same results (drag and downforce plots) as it did at other velocities, this has been tried at 100, 150, 175 and 200mph, all returning the same figures, but the first iteration starts much higher as the speed increases, before coming down and giving out the same figures as the previous simulations.

Have I missed any settings or is there anything in particular that would cause this? I am also getting the same pressure, friction etc. readings no matter the speed I set the initial condition to in the physics sub section.

Thanks!

[LuckyTran]

If this is a steady simulation then you should get the same results regardless of initial conditions.

[Seven277]

Originally Posted by LuckyTran

If this is a steady simulation then you should get the same results regardless of initial conditions.

Understood, I thought this might be the case, I was instructed in this assignment to use steady simulation, then compare the difference between the speeds, so a little confused as to what I am expected to do here and the point of spending the last 2 days running simulations when 1 would have sufficed.

Thanks for your help!

[LuckyTran]

Perhaps the assignment is to run with different boundary conditions.


You can find boundary conditions in regions, find your boundaries, and check out the physics conditions and physics values.