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November 2001

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Subject:
From:
Eric Christison <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Tue, 13 Nov 2001 09:26:37 +0000
Content-Type:
text/plain
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text/plain (58 lines)
I think you're all barking up the wrong tree.

Bernoulli's equations shows the conservation of kinetic energy in fluids
and is generally used to calculate things like areodynamic lift on an
aerofoil or the forces exerted on a pipe wall as the the contents flows
round a corner.

I think you're searching for P1v1/T1 = P2v2/T2. However v is not volume
but specific volume ie m^3/Kg.

Spend a minute on a reality check. If you put your thumb on the end of a
hose pipe does the pipe get smaller? If not, how can the volume of the
pipe decrease?

Hope this helps,



[log in to unmask] wrote:
>
> Ray, try http://www.lmnoeng.com/Flow/bernoulli.htm
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]]On Behalf Of Golembiewski, Ray
> Sent: Monday, November 12, 2001 14:34
> To: [log in to unmask]
> Subject: [TN] Formula?
>
>         What is the formula that proves when I put my thumb on the end
> of a garden house, the pressure increases and volume decreases. Is the
> same formula used with air? Please help,
>
> Ray Golembiewski C.I.D.
> Manufacturing Test Engineer
> Projects Unlimited, Inc.
> (937) 918-2200
>
--
Eric Christison
Mechanical Engineer
STMicroelectronics
33 Pinkhill
Edinburgh
EH12 7BF

Tel: (0)131 336 6165
Fax: (0)131 336 6001

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