Parshall Flume Flowrate Calulation
by Kirk_Irick on 10/23/04 at 14:51:34
Found formula but need enlightened as how to work formula. Q = Ch^- Qe Q = Flow-rate [discharge] through flume in cubic meter/second C = 8 (Parshall flume constant [empirical units].) h = .445008 meter (Measured upstream head / depth) ^ = n (Parshall flume coefficient) n = 1.60 Qe = CsQ3 in cubic meter / second (Purpose is for the reduction in flow-rate due to submergence) Cs = (.3812)b (Submergence coefficient [unit-less]. This is not the submergence ratio.) b = 3.6576 meter (Throat width of flume) Q3 = .99 cubic meter/second (Reduction in flow-rate due to submergence) H = .44196 meter (Measured downstream head / depth) H/h = Submergence ratio
Re: Parshall Flume Flowrate Calulation
by Robert Fogt on 10/24/04 at 03:55:19
I do not know first hand about flumes, but did find a site with information, plus a Java flume calculator.