Vodafone McLaren MP4-27 Mercedes

[simieski]

the flow exiting the tunnel is very turbulent from flow simulations I am loading some images up later tonight

Again surely this is to be expected? The boundary layer will grow from each enclosed side of the tunnel until they converge in the centre. The result of which being a slower much more turbulent flow.

[Huntresa]

Guys bare with me here but i got an idea when i just woke up.

Why do a upside down U-pod? Why not just take last years U-Pods and add a roof to it, that way you get the normal sidepod form above that leads some air to the coanda effect, but you also get the tunnel inside that can lead air to a duct or ducts.

[raymondu999]

Again surely this is to be expected? The boundary layer will grow from each enclosed side of the tunnel until they converge in the centre. The result of which being a slower much more turbulent flow.

If Toro Rosso can optimise the boundary layer off their double floor design, and McLaren could manage last year, I'm sure the 2012 McLaren team can.

Guys bare with me here but i got an idea when i just woke up.

Why do a upside down U-pod? Why not just take last years U-Pods and add a roof to it, that way you get the normal sidepod form above that leads some air to the coanda effect, but you also get the tunnel inside that can lead air to a duct or ducts.

Good morning to you then I'd imagine doing that would mean you have a lot of boundary layer drag over the top and bottom of the "roof" - ie you gain maybe the downwash, but you lose in twice the drag

[Huntresa]

Guys bare with me here but i got an idea when i just woke up.

Why do a upside down U-pod? Why not just take last years U-Pods and add a roof to it, that way you get the normal sidepod form above that leads some air to the coanda effect, but you also get the tunnel inside that can lead air to a duct or ducts.

Good morning to you then I'd imagine doing that would mean you have a lot of boundary layer drag over the top and bottom of the "roof" - ie you gain maybe the downwash, but you lose in twice the drag

But wouldnt it be just like a normal sidepod, or does that also act like that ? And by normal i mean that the air goes into it and above the sidepod.

[raymondu999]

Yes but that way you'd have the intake, the tunnel walls, AND the tunnel roof.

[CjC]

Ah this is my fav. Part of the weekend the excitement of new developments and how it might change things, but come Friday night, I'll be peeved off to hell...

[Coefficient]

Anyone know anybody who is there that is going to give us some early photos?

[Huntresa]

Yes but that way you'd have the intake, the tunnel walls, AND the tunnel roof.

But isnt the exact same amount of walls and roofs if you have an upside U pod?

[raymondu999]

U + roof, and upside down U? The upside down U doesn't have the "roof" structure to contend with. Or am I misinterpreting you? You are talking of extending the flow conditioner fin they had there over the entire length of the trough, right? This one, behind the mirror:


Extend that to the rear of the car, and I have what you're talking about, correct?

[Huntresa]

U + roof, and upside down U? The upside down U doesn't have the "roof" structure to contend with. Or am I misinterpreting you? You are talking of extending the flow conditioner fin they had there over the entire length of the trough, right? This one, behind the mirror:


Extend that to the rear of the car, and I have what you're talking about, correct?

The bottom or top of the U is one roof, the small one, then you have the roof of the sidepod, both roofs would be in both solutions, no ?

[bhall]

An H-pod?

[raymondu999]

Are we not talking about an "upside down u" sidepod as simply, an "n" shaped sidepod? Shaped exactly like the letter?

In this MP4-26 shot the sidepod itself , viewed from dead ahead, has 6 exposed surfaces (trough floor, 2 trough walls, the high bit, the outside "wall" and the bottom surface) plus two small surfaces over and under the winglet.

Are we not talking about having those same 6 surfaces inverted to be upside down?

If you just basically added a "ceiling" over the entire trough - you would be increasing the size of the 2 exposed surfaces of the winglet, and increase the boundary layer over it, no?

I think sketches are in order to make sure we're all talking of the same ideas

[Huntresa]

Are we not talking about an "upside down u" sidepod as simply, an "n" shaped sidepod? Shaped exactly like the letter?

In this MP4-26 shot the sidepod itself , viewed from dead ahead, has 6 exposed surfaces (trough floor, 2 trough walls, the high bit, the outside "wall" and the bottom surface) plus two small surfaces over and under the winglet.

Are we not talking about having those same 6 surfaces inverted to be upside down?

If you just basically added a "ceiling" over the entire trough - you would be increasing the size of the 2 exposed surfaces of the winglet, and increase the boundary layer over it, no?

I think sketches are in order to make sure we're all talking of the same ideas

Yeah im sitting in paint atm to try and make what i mean

[beelsebob]

Are we not talking about an "upside down u" sidepod as simply, an "n" shaped sidepod? Shaped exactly like the letter?

Yes and no – more like an underlined n, because ofc the floor has to be flat. so for the U pod with a roof you have the bottom surface of the floor, the top surface of the U pod, the bottom surface of the roof, and the top surface of the car (4 surfaces); for the tunnel side pod you have the bottom of the floor, the top of the floor, the roof of the n and the top of the side pod (also 4).

That all said... We're getting a bit off topic on this year's car... can someone get to Hockenheim with a camera already!

[Huntresa]

Are we not talking about an "upside down u" sidepod as simply, an "n" shaped sidepod? Shaped exactly like the letter?

In this MP4-26 shot the sidepod itself , viewed from dead ahead, has 6 exposed surfaces (trough floor, 2 trough walls, the high bit, the outside "wall" and the bottom surface) plus two small surfaces over and under the winglet.

Are we not talking about having those same 6 surfaces inverted to be upside down?

If you just basically added a "ceiling" over the entire trough - you would be increasing the size of the 2 exposed surfaces of the winglet, and increase the boundary layer over it, no?

I think sketches are in order to make sure we're all talking of the same ideas

This is what i mean, and i dont know if it works or not but i just wanna show its the exact same amount of everything, either upside down or last year with a roof.