Re: [Phys-l] question about Bernoulli

[brian whatcott <betwys1@sbcglobal.net>]

Which reminds me: a popular and cheap engineering  analogy for 3-D 
streamline
 (or turbulent) flow is provided by a weir arrangement.
 If water in a thin  film is run down a shallow incline,
 crystals of dye may be placed in the upstream in order to  show the 
usual patterns of
streamline behavior when an airfoil section is placed in the stream as 
an 'obstacle.'

I should have mentioned this before: the analogy is rather respectable 
in fact.
It would undoubtedly provide some insight into venturi flows, even 
though there is no
pretense of molecular causes....

Brian W

On 11/26/2010 11:33 PM, William Robertson wrote:
> I don't know yet. That's what I'm looking for. It might be a fruitless
> search. There are many physical explanations not offered in physics
> textbooks, but that doesn't mean they don't exist.
>
> Bill
>
>
>
>
> On Nov 26, 2010, at 11:42 AM, Jack Uretsky wrote:
>
> > Bernoulli is a stat ement about properties on a streamline.  How do
> > you
> > model a streamline in a moleculat picture?
> > 					Rekgards,