Aerodynamic Discussion Thread
06-07-2013, 10:37 PM
#241
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I am a part of the Time Attack Forums and I came across WCKDVPR's build of his Viper. So these are some more pics of what I am working on.
Here is the link to more pics hood louvers - Page 3 - Time Attack Forums
Here is the link to more pics hood louvers - Page 3 - Time Attack Forums
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06-11-2013, 12:27 AM
#246
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I was looking around about radiator ducts and then what about a wing for the upper portion of the radiator duct.
He is some inspiration
I want more front end downforce. Here is one I drew up, but the air foil is to big, but you got the idea
He is some inspiration
I want more front end downforce. Here is one I drew up, but the air foil is to big, but you got the idea
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06-11-2013, 02:20 AM
#253
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Article should be called "how to make your drift car look like a '80s rally car"
Also, how pretentious is that guy to call his own article "brilliant"?
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06-11-2013, 02:22 AM
#254
Okay think about it this way. Flow closest to the wing flows faster than that farther away from the wing. This ensures that the static pressure reduction is greatest near the wing surface. This provides the turning effect to the flow farther away. Now, if you block the path of the flow closest to the wing, it will slow down the flow, and now you lose the turning effect on the flow farther away. Leave a gap, problem solved.
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06-11-2013, 02:59 AM
#255
Just the opposite. Area closest to the wing is called a boundary layer. In this layer the air slows down due to friction. This layer is responsible for creating turbulence that you dont want.
U'd want to toss the radiator near the end of the wing where the boundary layer is the thickest and the air slows down and pressure increases.
U'd want to toss the radiator near the end of the wing where the boundary layer is the thickest and the air slows down and pressure increases.
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06-11-2013, 07:26 AM
#256
Just the opposite. Area closest to the wing is called a boundary layer. In this layer the air slows down due to friction. This layer is responsible for creating turbulence that you dont want.
U'd want to toss the radiator near the end of the wing where the boundary layer is the thickest and the air slows down and pressure increases.
U'd want to toss the radiator near the end of the wing where the boundary layer is the thickest and the air slows down and pressure increases.
But you'd need to do a lot of CFD on it to make any real downforce. Remember that radiator is going to kill the velocity of flow, its also going to have higher pressure in front of it than behind it. I'm in the camp of, the wing rad duct probably wont work (without a bunch of prototypes in the wind tunnel).
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06-11-2013, 08:35 AM
#257
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No. You are combining two features with competing interests.
For the wing to work, it needs low pressure below it.
For the radiator duct to work, it needs high pressure inside of it (which is below the wing)
You can't have high pressure and low pressure at the same time, so one of them wont work well.
Also, that second picture isn't a "wing", its just a gurney flap in front of the radiator duct exit. THAT is a great idea (I have one on my car too). It will create lower pressure at the radiator duct exit, reducing pressure behind the radiator.
For the wing to work, it needs low pressure below it.
For the radiator duct to work, it needs high pressure inside of it (which is below the wing)
You can't have high pressure and low pressure at the same time, so one of them wont work well.
Also, that second picture isn't a "wing", its just a gurney flap in front of the radiator duct exit. THAT is a great idea (I have one on my car too). It will create lower pressure at the radiator duct exit, reducing pressure behind the radiator.
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06-11-2013, 08:56 AM
#258
No. You are combining two features with competing interests.
For the wing to work, it needs low pressure below it.
For the radiator duct to work, it needs high pressure inside of it (which is below the wing)
You can't have high pressure and low pressure at the same time, so one of them wont work well.
Also, that second picture isn't a "wing", its just a gurney flap in front of the radiator duct exit. THAT is a great idea (I have one on my car too). It will create lower pressure at the radiator duct exit, reducing pressure behind the radiator.
For the wing to work, it needs low pressure below it.
For the radiator duct to work, it needs high pressure inside of it (which is below the wing)
You can't have high pressure and low pressure at the same time, so one of them wont work well.
Also, that second picture isn't a "wing", its just a gurney flap in front of the radiator duct exit. THAT is a great idea (I have one on my car too). It will create lower pressure at the radiator duct exit, reducing pressure behind the radiator.
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