I am looking for an example showing how to do 3D drag coefficient on an aircraft with internal flows also included. I have one running, but the numbers are not making any sense to me. They do not seem reasonable, so I am wondering if I am misinterpreting the results or possibly setting up the problem incorrectly. Also trying to decide if when using the symmetry boundary if the results are automatically doubled to account for the symmetry, or if they do not include the other half. Interestingly, if I run the same simulation on the right and left mirrored sides, the two analyses do not result in the same values, they are close, but measurably not the same.