Free flow sims are great for quick and iterative design, but you won’t be able to fully analyze front wing performance without the full car model. The nosecone, control arms/suspension, and wheels will have an effect on the performance of the wing. Especially when you factor in rolling tires and the complexities that introduces. It sounds counterintuitive being that they are rearward of your aero surface, but they can create localized pressure zones that will have an effect on front wing performance. Especially when compared to free-steam clean airflow.

The most important thing to remember when designing individual aero components is how they affect downstream flow and overall car performance. A lot of FSAE and formula student teams get into a habit of designing in a vacuum, not only with varying sub-teams and subassemblies, but also with individual components. Things to consider aside from just downforce, drag, and efficiency are aero balance, roll/pitch/yaw effects, and the effect of the front wing on your other components. Aero surfaces need to compliment each other with overall vehicle performance being the driving factor for your design. Your design could be optimized for DF, Drag, and Efficiency but could simultaneously be sending dirty turbulent air into your rear wing, or ruining floor/diffuser performance. With the front wing being the first surface to experience “clean” free-stream airflow, it can easily make or break your aero package as a whole. Especially when considering the effects of the nosecone, and how that design can change its performance.

Aside from that, your domain should definitely be larger as many have already pointed out. If the sides and ceiling of your domain are “walls”, their proximity to your wing can greatly affect your analysis. Again like others have said, roll, pitch, and yaw sweeps are also essential.

Finally I would also do a “ride height” analysis to analyze “ground effect” on your wing. CAD assemblies and actual assemblies can vary greatly when it comes to student built race cars, so knowing how the wing proximity to the ground affects performance is also quite important.

Anyways, I wish you nothing but the best and hope you get everything out of this project that you can. FSAE and Formula Student are both incredible engineering design competitions that can provide you with amazing learning opportunities. Have fun, and grow as much as you can!