DogTrail
X-TRAIL FANATIC
Date Registered: 05-2012
Location: Sunshine Coast
TOTAL POSTS: 481
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Re: Re:
There could be some interesting by products of physics involving air/wind resistance involved here.
At a particular wind speed an object may be resistant, but at a higher wind speed, the turbulence may cause it to be less resistant.
Apparently that is how a bumblebee can fly- theoretically it should not fly - but against all of the laws of aerodynamics it uses the turbulence to create lift.
From my simplistic viewpoint, a shaped surround might have the most effect on airflow to and from the heat exchange/radiator.
More air flow should lead towards greater heat exchange.
To me, the From is probably more important than the To as it is easy to create a wall of air..if it has nowhere to go.
In which case, the available venting (of airflow) at the back of the radiator defines the useful input (probably set by the gaps) which allows the maximum airflow.
At higher speed, compression does create an aerodynamic profile of denser air in front of the radiator. What does that do?
Edit: just a few late night rambling thoughts.
Last edited by DogTrail, 26/Oct/2013, 12:18 am
--- 2011/12 Australia:- 2.5 litre petrol 4WD, Series IV ST, CVT : + some gadgets and cosmetic add-on's. Dirt, (it protects the paintwork) X-2429(c).
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25/Oct/2013, 11:43 pm
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AugustusXTrail
X-TRAIL ENTHUSIAST
Date Registered: 07-2013
Location: Cowes Phillip Island Victoria
TOTAL POSTS: 123
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Re: Intercooling with water vapour
Hi Dogtrail, interesting late night ramblings, the reason Dad knows so much about aero is he has built several wind tunnels and used them extensively, both on plane prototypes and landspeed record car shapes. It's his intention one day to claim the worlds fastest wheel driven vehicle, he want's to do it using steam!
He's taking me to Lake Gairdner next year for a run on the salt, with the intention of making me the Worlds Fastest Diesel X Trail, if not the fastest outright. LOL should be fun.
Your musings about a build up of high pressure frontal air are also interesting, they effectively slow down the airflow through the heat exchanger too.
Now your right, exit air is very important, but it still must not move over the radiator/ intercooler too quick or it does not exchange the heat efficiently. Effective sealing of the intake area is very important, look at nearly all stock car set ups and a lot of care goes into this area, rubber seals to seal the bonnet and engine bay (remove these at your own peril, it will cost you an engine real quick in some cars) especially on cars that run at highway speeds and beyond.
A lot of so called experts ignore this at their peril and wonder why they can't keep things cool.
It was actually discovered by accident in the sixties that angling the radiator worked, remember when we Jacked up the back of cars big time, well an offshoot was improved cooling, which was made better when it was laid back instead of forward. So a practical offshoot from a rather radical look that was dangerous, great for drag racing and to get awesome weight transfer, totally unsafe on the street.
I'll start a members ride page soon, as I am copping some really major upgrades, many cosmetic, but lots of serious performance ones. They will help heaps with my record attempt. But Dad really can't wait for an excuse to pull my engine apart and have a major fiddle with my bits, LOL, to make me really fly!
Augustus the low flying X Trail, sounds good to me, LOL.
Had a bath today, Mum reckoned I'd been dirty for long enough, she even made Dad wash my inside door sills, probably the human equivalent of washing behind your ears, LOL
So gunna find some serious mud real soon, as I'm getting a set of new wheels (Advanti Crawlers 16") and Muddies soon, Dad just has to make up his mind which boots to buy me. Mighty BFG's M/T's or the new Dueler M/T's, hard choice!
Have a great day and say G'Day to ya Exy for me, Augustus the X Trail, gettin' Muddy all the time
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1/Nov/2013, 12:30 am
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Charlie250
X-TRAIL ENTHUSIAST
Date Registered: 08-2012
TOTAL POSTS: 193
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Re: M9R Intercooler
The motor is transversely mounted.
The turbo is on the firewall side.
The intercooler is mounted at the front low down in front of the radiator.
--- X-2634 2012 Series IV TS Man, Kings Springs, Bridgestone D697's, High Tech Exhaust, Turbo Timer, DBA Slotted Rotors, QFM HPX Pads, Tow Bar, Cargo Barrier, UHF, HID Dr Lights, LED Light Bar, K&N Filter, Bonnet Struts, & Premium Tint
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29/Oct/2014, 10:58 am
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