Dave,
Wait no longer; see my e-mail dated yesterday, copied below:
Len,
Not just the +8, but also the 4/4 and the +4 (but, apparently not the new
Aero 8) have louvres. I'm not an engineer (aerospace or otherwise) but I
suspect that, when the car is in forward motion, the louvres force the air
rushing over the bonnet away from the bonnet and create a partial vacuum to
help suck the air out. The only other way for air to escape is through the
bottom of the engine compartment. I agree, the louvres look cool but are
hard on the finger tips when polishing the car. But, "no pain, no gain."
Chuck Vandergraaf
Pinawa, MB
'52 +4 (complete with louvres)
Chuck (radiochemistry; not physics)
----------
From: David McCoy[SMTP:gdm_1419@yahoo.com]
Sent: Thursday June 01, 2000 11:57 AM
To: morgans@autox.team.net
Subject: Re: Louvers in the Bonnet
--- "Michael D. Miles, PE" <mdmiles@mdmpe.com> wrote:
> Not exactly. The theory is that a certain amount of
> air enters the
> GRILL but its 'path of least resistance' is actually
> downward through
> the opening to the ground between the grill and
> radiator. This
> reduces the amount of air rammed through the
> radiator signifigantly
> and therefor allows backflow (recirculation) from
> the engine
> compartment to percolate forward through some of the
> radiator, thereby
> reducing its efficiency in removing heat.
Waiting patiently for "bernouli" to surface...IR
airflow over and across louvers pulling air from
engine area... OR perhaps louver as "wing" ....
Dave (C in physics) McCoy
__________________________________________________
Send instant messages & get email alerts with Yahoo! Messenger.
|