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Re: F1 Evaluating ‘Wheel Arches’
Posted: 20 Sep 2023, 13:59
by Tommy Cookers
Just_a_fan wrote: ↑18 Sep 2023, 17:17
Just_a_fan wrote: ↑18 Sep 2023, 16:16
... It happens on road cars too and their tyres are cold, especially in wet weather.
... not enough to cause significant enough evaporation to create a dry line behind the car. The vastly more significant way that standing water is removed from the track is physically moving it with the tyre...
road or track the tyres of each speeding car are a 100+ kW 'hair dryer' acting on one part of the road surface
'drying' ie reducing in various ways the suspended liquid water aka spray by heating the 'physically moved' water
ie the notional moving effect doesn't occur without the effects of that heat occurring
plus F1 wheel aerodynamic drag will also heat local air (maybe 50 kW) - and heat it by brake cooling (maybe 200 kW)
all the above mechanisms present as 'standing water physically moved with the tyre'
Re: F1 Evaluating ‘Wheel Arches’
Posted: 22 Sep 2023, 10:54
by mzso
Tommy Cookers wrote: ↑20 Sep 2023, 13:59
Just_a_fan wrote: ↑18 Sep 2023, 17:17
Just_a_fan wrote: ↑18 Sep 2023, 16:16
... It happens on road cars too and their tyres are cold, especially in wet weather.
... not enough to cause significant enough evaporation to create a dry line behind the car. The vastly more significant way that standing water is removed from the track is physically moving it with the tyre...
road or track the tyres of each speeding car are a 100+ kW 'hair dryer' acting on one part of the road surface
'drying' ie reducing in various ways the suspended liquid water aka spray by heating the 'physically moved' water
ie the notional moving effect doesn't occur without the effects of that heat occurring
plus F1 wheel aerodynamic drag will also heat local air (maybe 50 kW) - and heat it by brake cooling (maybe 200 kW)
all the above mechanisms present as 'standing water physically moved with the tyre'
What's your point? Yes the tires heat up, but also it's irrelevant. The massive amounts.of water soak up the heat easily. Water is also one of the highest heat capacity substances known.
Re: F1 Evaluating ‘Wheel Arches’
Posted: 09 May 2024, 10:10
by Vanja #66
Re: F1 Evaluating ‘Wheel Arches’
Posted: 09 May 2024, 12:08
by SharkY
Vanja #66 wrote: ↑09 May 2024, 10:10
Ferrari is testing latest version of "wheel arches" for extreme wet tyres today. At this point it's not even funny, these are full wheel covers probably tested to see if even the most extreme cover solution would work. It doesn't
Well, TBH the spray behind the car with covers looks slightly diminished compared with another, however it's hard to judge, given how close the cars were.
With the amount of air going below the floor, that is than directed sharply upward with the help of beam wing, I don't see how can there be a solution to this problem within these regulations. Unless we just block the diffuser outlet
BTW Fernando felt nostalgic and decided to give Ferrari a spin?
Re: F1 Evaluating ‘Wheel Arches’
Posted: 09 May 2024, 12:20
by Saykas
Re: F1 Evaluating ‘Wheel Arches’
Posted: 09 May 2024, 12:38
by clownfish
Looks like more water being is pushed outwards, less upwards.
Re: F1 Evaluating ‘Wheel Arches’
Posted: 09 May 2024, 12:42
by Vanja #66
clownfish wrote: ↑09 May 2024, 12:38
Looks like more water being is pushed outwards, less upwards.
A bit like that, but only on front. Front tyres leave no vertical spray, but in the rear there is a big rooster tail spray just like it always is. It's not about tyre cover, it's about downforce, diffuser and rear wing combined with their strong vortex interaction pick up a lot of water from the rear and just send it up.
In 2026 this will be a smaller problem with narrower tyres and far less downforce than today, it's no use fixing a problem that's about to diminish on its own...
