love that this video came up on my recommended. Kyle seems to be really happy and doing some awesome work at where he's at. Especially since the team has been unbeatable
Just looked it up. Pretty neat. I’ve actually been tinkering with an adjustable splitter tunnel but would be a manual option since just about every rules set for racing dictates aero must be fixed.
How much drag does a shorter splitter create opposed to a splitter that goes all the way back past the front axle and up the the front subframe? I see a lot of splitter designs that are cut short for shipping purposes (save money) but is it worth the extra length?
Cfd and wind tunnel data on splitters is much more limited then wings. It will be a little more but nothing drastic. As with all things aero, the degree of it depends on several factors. Not sure if you are following our new Vlogs but my new splitter will be a seperate piece to extend it to the axle centerline and will test both setups with data.
@@ajhartmanaero yea, I think between you and this SAE paper I buckled down and paid for I learned it’s called tire squirt. I should’ve watched more of your vids before paying that 33 bucks lol.
Bernoulli's principle isn't why aerodynamics work. Newton's third law of motion says that for every action, there is an equal and opposite reaction. Any aerodynamic force is the result of throwing air in the opposite direction. A splitter forces air to go upwards, which creates an equal and opposite force downwards. A diffuser forces mass of air upwards, which creates an equal and opposite force downwards. A wing throws air up or down due to angle of attack, which creates an equal and opposite reaction. Bernoulli's principle only describes the airflow following the surface, not the forces experienced by the body.
While you are correct, it’s at a much much less degree than Bernoulli’s. If your theory was correct, then how does a diffusor make downforce on a car with a flat bottom work when there is zero airflow on the top side? Tunnels in a splitter are the same. There is zero air on the top surface to “throw” upwards.
@@ajhartmanaero The net effect is to push air upwards. We also like to think of air as flowing over a car, but the air is stationary and the car is moving. From the atmosphere's perspective, it is only moving up, down, left, or right to get out of the path of the car, and trying to return to stationary equilibrium afterwards. If Bernoulli's principle is to be believed as a primary force, then any car is a giant airfoil which generates lift: air travels a shorter path under the car, while it must race a longer path over the body of the vehicle to rejoin, which is exactly like how an airplane would generate lift according to Bernoulli's principle. You cannot generate motion without reaction mass, it is impossible according to our current understanding of science. If you propel air upwards, you experience an equal force downwards.
Yes. Tire squirt was modeled in our CFD runs. Since the tunnel is in front of it, its not overly detrimental, but you also can't get away without tire squirt either so it is what it is.
Effectively the same. Theres a case for a non moving floor wind tunnel you'll get an extra boundry layer on the ground, but for the sake of this video and not going way off on a tangent, think of it as the same.
@@Harty1275 I'm aware. Which is why I made mention of the wind tunnel not being a rolling floor, but the tunnels will make downforce in both situations.
Who tf puts a splitter on the bumper? You need it to start at the bumper, and extend it towards the rear of the car. We're not talking ebay stick on splitters here...