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 Author: ksandlinnc Time: 01/09/15 12:35 PST Reply | Original Message | New Topic | List Topics | List Messages on This Topic
 Current Topic:Calculating cfm for liquid aluminum I'm trying to calculate cfm for melted aluminum passing through a venturi nozzle at 90 psi. I can eventually determine the dimensions of the nozzle to get those necessary figures for the existing calculator. However, I am missing some things and ignorant of others. Here's what I can determine on my own (TBD), what I know, and what I am completely clueless about: upstream diameter Da- TBD Diameter of the venturi neck Db- TBD Pressure difference measured by Venturi  Dp- ummm..what? And what's a Pa? Fluid Density r- (avg) 2600 kg/m^3 Discharge Coefficient  C- how?...what? Upstream Pressure Tap- Pa ???????? Downstream Pressure Tap Pb????? I also don't understand what that little p is or the weird u (unless it's the expected value from statistics) represent in some of the equations. ANY help would be greatly appreciated.
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