Williams FW32 Cosworth

[Confused_Andy]

viewtopic.php?f=6&t=6649

Have a little read through that, we all see them but not all of us know what their for, would you rather hear bullshit (made up because we dont know) or some knowledgeable truth?

[Spencifer_Murphy]

I always thought that dimpled effect on the bodywork was simply the weave of the Carbon Fibre showing through the very thin layer(s) of paint. (The Ferrari F40 road car had it).

Even so, I'm not too sure any golf ball effect would work on an F1 car as if I recall correctly, the whole concept works on a golf ball as - aerodynamically - a sphere is not ideal. The dimples in a golf ball create small eddies (turbulant flow) which breaks up the boundary layer, a rare occurance of where turbulant flow is more beneficial than laminar flow (as at higher speed laminar flow is usually not obtainable around a sphere due to the sudden convergence of the opposite sides of the body.

The surface of an F1 - I believe - is designed to ty and maintain laminar flow, thus, breaking this up by giving the surface a dimpled effect would surely only increase parasitic drag due to the (admittedly very slight) increase in wetted surface area?

I could be talking complete nonsence, so please correct me if I'm wrong, as its been 4years since I studied this at university, it was my first year and as a result many lectures were attended while either hungover or still drunk

[SoftBatch]

The dimples reduce pressure drag on the golf ball by tripping the boundary layer from laminar to turbulent flow thereby increasing the distance around the sphere at which the flow separates from the rear of the ball.

The dimpled effect of the carbon fiber weave is usually a result of that side of the panel not being the contact side for the mold used during the curing process.

[Belatti]

Williams more than anyone deserve some results. Frank just want to race, and he's strtig to realize that the money needs to come from other sources. WHP, and Williams Golf clubs, and whatever legit business they can get into will only help them keep improving.

They had bad luck in the 90's financially. They tried to align themselved with a good engine manufacturer like Mclaren did, but the story ends there. Mclaren got some rich Saudis, some rich Mercedes money, and were able to build into the monolith they are now.

Year on year I want to cheer them on, but it gets harder and harder as they just don't have the resources to develop like Macca.

One of the few garage teams left, I want them to succeed more than anyone, and I'm not a fanboy for any one team (pointless with all the inbreeding in F1), so that says a lot.

Me too

[Tom]

I'm curious, I think Williams are launching the car next week. Is anyone here attending the launch?

[christopher.mahlon]

Good to see you again, Tom. Will it be at Grove? I'd consider making the trip from Belfast.

[Tim.Wright]

The dimples reduce pressure drag on the golf ball by tripping the boundary layer from laminar to turbulent flow thereby increasing the distance around the sphere at which the flow separates from the rear of the ball.

The dimpled effect of the carbon fiber weave is usually a result of that side of the panel not being the contact side for the mold used during the curing process.

Yes this is correct. That surface looks like a not very nicely finished carbon panel. I'm guessing the materials used here would use some crazy high temp resins and these can be hard to process at times. But its definately not a delibrate surface texture.

Tim

[Spencifer_Murphy]

The dimples reduce pressure drag on the golf ball by tripping the boundary layer from laminar to turbulent flow thereby increasing the distance around the sphere at which the flow separates from the rear of the ball.

The dimpled effect of the carbon fiber weave is usually a result of that side of the panel not being the contact side for the mold used during the curing process.

Yes this is correct. That surface looks like a not very nicely finished carbon panel. I'm guessing the materials used here would use some crazy high temp resins and these can be hard to process at times. But its definately not a delibrate surface texture.

Tim

Yeah, that's what I was getting with at my post. Not sure if I was clear about that after a long bit about golf balls lol. I didn't think the golf ball effect would be beneficial on an F1 car. That coupled with the fact I've seen examples of carbon fibre weave showing through paint makes me think it's as simple as that. Just the weave showing through the layers.

[Roger the knife]

The dimples reduce pressure drag on the golf ball by tripping the boundary layer from laminar to turbulent flow thereby increasing the distance around the sphere at which the flow separates from the rear of the ball.

The dimpled effect of the carbon fiber weave is usually a result of that side of the panel not being the contact side for the mold used during the curing process.

Yes this is correct. That surface looks like a not very nicely finished carbon panel. I'm guessing the materials used here would use some crazy high temp resins and these can be hard to process at times. But its definately not a delibrate surface texture.

Tim

Yeah, that's what I was getting with at my post. Not sure if I was clear about that after a long bit about golf balls lol. I didn't think the golf ball effect would be beneficial on an F1 car. That coupled with the fact I've seen examples of carbon fibre weave showing through paint makes me think it's as simple as that. Just the weave showing through the layers.

I think it's Williams using the thinest coat of paint needed to give it some colour, and with no primer, the waeve shows through

[korzeniow]

Williams on fire:

[tomazy]

I found one particulary interesting picture from Jerez testing. The rear wing on this picture has a white stip acros, and what looks like a gap in the middle of that strip? This is strange, becouse 3 part rear wings aren't legal?

What do you guys think?

http://img37.imageshack.us/img37/5568/djm1020fe82.jpg

[Confused_Andy]

I found one particulary interesting picture from Jerez testing. The rear wing on this picture has a white stip acros, and what looks like a gap in the middle of that strip? This is strange, becouse 3 part rear wings aren't legal?

What do you guys think?

http://img37.imageshack.us/img37/5568/djm1020fe82.jpg

They're not supposed to be but Mclaren and BMW (last year) found a way around those rules, so I'm guessing this is a simelar thing.

[outer_bongolia]

I found one particulary interesting picture from Jerez testing. The rear wing on this picture has a white stip acros, and what looks like a gap in the middle of that strip? This is strange, becouse 3 part rear wings aren't legal?

What do you guys think?

http://img37.imageshack.us/img37/5568/djm1020fe82.jpg

Do you have a picture of the front of the wing from the same test? The answer to your question might be there. - Check out the McLaren discussion from page 60 to 90 for further explanation.

[Terrible3]

This also covers the topic at hand
http://scarbsf1.wordpress.com/2010/02/1 ... apan-2009/

[horse]

It's weird that picture, which day was that photo taken? I can't find a similar picture. There is this one:

I found one particulary interesting picture from Jerez testing. The rear wing on this picture has a white stip acros, and what looks like a gap in the middle of that strip? This is strange, becouse 3 part rear wings aren't legal?

What do you guys think?

http://img37.imageshack.us/img37/5568/djm1020fe82.jpg

Regarding the big picture, it looks more like a long main element with a white strip, followed by a short second element. My feeling is, that if you could see daylight through it then it couldn't be a blown flap. I think you can definitely see daylight through the small, high, slit. Also, note that you can see the normal williams 'slot' in the flap element above the jack man's head. So I'd be surprised if this was a blowing slot in addition to the normal slot.

So I reckon, not blown flap but long main element with stripe. High downforce setup perhaps?

EDIT: Although, if you at the end plate it looks like there is light coming through what I thought was a white stripe. However, I reckon this is just a reflection of the white paint rather than light getting through.