Best done info and explanation I have seen so far.

http://www.eng.ed.ac.uk/~jchick/Y5/thesis/FormulaStudent/public_html/pt7.htm

Paul Lamar

Yes, this one is very similar to the Helmholtz approach in the slide
presentation I sent you the URL on.  I see they use effective volume as
well, Vd/2(rc-1)/(rc+1) in the equation.  I noticed they expressed
disappointment about their results using it.  I don't see any indication of
what I have read in several other studies that the Helmholtz resonance freq
should be approx twice the cylinder frequency for best cylinder filling
effect. So the runner length that produces a resonance freq twice the
cylinder freq for best filling would be shorter (by 1/2)  than the results
of the equation would imply.

Ed

And I thought you and Tracy were identical twins :)

Paul Lamar
 
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