-- 
Paul Lamar ...No rotor no motor.

Try this for reference

http://www.flowmeterdirectory.com/flowmeter_venturi_calc.html

http://www.engineersedge.com/fluid_flow/application_bernoulli_eq_venturi.htm

http://www.ajdesigner.com/phpventuriscrubber/venturi_scrubber_equation_press
ure_drop_gas_velocity.php

Larry

Thanks Larry. I'll check it out.

---------------------------------------------------

The first one with the venturi calculator does not appear to put out
the data we need. What we need is pressure at p2 as a function of air flow
for this calculator to work. Apparently you have to know what that is and plug
it into the calculator. My browser will not run that java applet for some strange
reason so perhaps somebody with IE can experiment with that for us.

We need at least 3 input flow values 20 CFM, 100 CFM and 200 CFM.
More would be better say every 50 CFM.


-------------------------------------------------------------

The second one uses the same Bernoulli  equation I used. Both first and second
equations consider the fluid incompressible.

-------------------------------------------------

The last AJ Design one is bingo!
However it confirms the square law function of the venturi because
of the v squared term. This is all I really need to know.
What we need is a signal that is directly proportional to air flow.
That is what we get with MAP.

BTW does anybody know the water to gas volume ratio in liters per cubic meter.
I assume they are talking about the same weight of water and air.
Interesting concept.

Paul Lamar ...No rotor no motor.

The Rotary Engine NewsLetter. Powered by Linux.
ACRE NL web site. http://www.rotaryeng.net
Copyright 1998-2006 All world wide rights reserved.