school assignment. cd to high.

heliojjr · June 2, 2016, 22:46

i am an undergraduate student, and i am really new at the ansys fluent, but i have to perform a aerodynamics simulation of car, and take the respective CD, drag coefficient, for an school assignment, i set the k-epsilon model, with 40 m/s velocity, the problem is that i got a result completely impossible, it was about 7000000 of drag coefficient, i set all the other settings as a default, someone can help me to figure out what i set wrong?

`e` · June 3, 2016, 03:26

Check that the reference area is correct (via Setup > Reference Values > Area). This area will probably correspond to the cross section of your car (depends on how you have defined your drag coefficient).

June 2, 2016, 22:46	school assignment. cd to high.	#1
heliojjr New Member Helio Jose Alipio Junior Join Date: Mar 2016 Posts: 6 Rep Power: 10	i am an undergraduate student, and i am really new at the ansys fluent, but i have to perform a aerodynamics simulation of car, and take the respective CD, drag coefficient, for an school assignment, i set the k-epsilon model, with 40 m/s velocity, the problem is that i got a result completely impossible, it was about 7000000 of drag coefficient, i set all the other settings as a default, someone can help me to figure out what i set wrong?

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June 3, 2016, 03:26		#2
`e` Senior Member Join Date: Mar 2015 Posts: 892 Rep Power: 18	Check that the reference area is correct (via Setup > Reference Values > Area). This area will probably correspond to the cross section of your car (depends on how you have defined your drag coefficient).