Quote:
Originally Posted by Wonderbar
Gotcha. So the addition of more underbody panels in the rear perhaps, or side splitters?
|
Possibly... you never know with aerodynamics. To summarize the results of the ride height data, it did the opposite of what Paul and I thought would happen. The drag reduction makes sense but we thought downforce would increase, not decrease (albeit it only did very slightly). We believe flow is becoming chocked at these lower vehicle levels but we didn't think that would happen until we ran the analysis.
All CFD is done on an FR-S, so if you have a BRZ with the spoiler, that increases downforce some and would probably push it to be rear biased.
Quote:
Originally Posted by JDKane527
Curious in the cfd analysis, was the assumption made that the underbody of the car was flat or was the underbody modeled?
|
Our model was built off of blueprints. The underbody of the car, which can be viewed up a few posts, is completely flat. I know this is stated in our "technical article," but I will state it again. This is comparing a relatively accurate model of the twins to that same model with a splitter, and then with a splitter and rear diffuser. Real world results will vary from the CFD analysis. What the analysis does do is give us a good indication of what is likely happening in real world scenarios (going down the hightway, drag strip, road course, etc.)
This is the best we can do at this time. We are looking into getting a portable scanner and at that time we may model the car's underbody more accurately, but that takes a lot of time and effort. In most cases this is considered accurate enough to properly see the benefit of the devices we have tested.