Hi Fella`s,
I thought I would ask the wealth of knowledge on here first, regarding rads.
I can`t seem to find much info on radiator positions, apart from, they have been mounted just about everywhere possible over time (nose cone, side
pods, engine bay, under the rear wing etc)
The current trend in f1 is to mount them at 45 degrees to the angle of flow at high pressure region just behind/to the side of the driver.
LMP/ Group-C etc have at times mounted them horizontal to the direction of flow (basically laid flat and exposed at the top of the side pods.
Obviously there is a trade off cooling efficeincy in favour of aerodynamics here.
The lotus 79 mounted them at the leading edge of the side pods, graphted in due to the venturi effect pods they were running.
What seems to be the best option here for a dIY LMP aerodynaics conscious build? I guess this is more of an experience based decision, so if you have
a thought, please feel free to share
Best Regards
Stuart
if you can pipe it , at the front , design the duct correctly you can add downforce .
placing them at 45 degrees at teh side has two advantages , the duct can be straight and you can reduce the frontal area .
if your close to a decent library , get a couple of books on loan , even SAE papers can be got out on inter library loans .
Do you mean at the front in the nosecone or in the side pods? And I assume you mean using something like a naca duct, due to the increase in pressure they create.
duct doesnt have to be naca shaped , they werent designed with an exit in mind , just make sure the exit isnt a great deal larger than the inlet itll help drive it through .
I'd say in LMP & F1 development essentially the radiators have ended up in the space left over from other aerodynamic design requirements.
The plain fact of the matter is the radiator can go anywhere providing its got a decently designed duct feeding air to it from a high pressure region
and it exits to a low pressure region.
Its not a car but the Britten bike really makes this beautifully obvious, the radiator lying flat under the seat, air is ducted the nose (the highest
pressure point on the bike) and exits into the low pressure region behind the engine. Because of the efficient ducting the radiator itself is tiny
compared to the what normally would be fitted to a engine of this size.
I had intended to do my radiator as per the Ferrari 333SP but fear of failure forced me back
to something more conservative. When I get my balls back I may revisit the idea.
Cheers that made things a lot clearer. Have the rads at the front and expel the air through the front wheel lurves. I just so happen to have a sheet
of lurves nice one! That 333 is a lovely machine to boot
quote:
Originally posted by StuartBJ
Do you mean at the front in the nosecone or in the side pods? And I assume you mean using something like a naca duct, due to the increase in pressure they create.
Correct. Many installations have great inflow but the exit is completely forgotten about. If half the effort went into the exhaust side, radiators could be quite small.
Gecko, when you say tilted down, how far forward?? 45 degrees? 30 degrees?
what entry duct shape would you recommend?
quote:
Originally posted by StuartBJ
Gecko, when you say tilted down, how far forward?? 45 degrees? 30 degrees?
what entry duct shape would you recommend?
Cheers, great pic!
Well I guess its time to mount the rads then
quote:
Originally posted by StuartBJ
Gecko, when you say tilted down, how far forward?? 45 degrees? 30 degrees?
what entry duct shape would you recommend?
Elise radiator is completely horizontal...
quote:
Originally posted by tadltd
Elise radiator is completely horizontal...
quote:
I've had so many people tell me it won't work
quote:
Originally posted by Doug68
quote:
Originally posted by tadltd
Elise radiator is completely horizontal...
I love it! I've had so many people tell me it won't work (laying it flat that it is) where plainly it can be made to work.
Is the Elise rad much different in size to that used by the same engine in different cars?
quote:
Originally posted by Doug68
quote:
Originally posted by tadltd
Elise radiator is completely horizontal...
I love it! I've had so many people tell me it won't work (laying it flat that it is) where plainly it can be made to work.
Is the Elise rad much different in size to that used by the same engine in different cars?