Denali National Park Weather Forecast for Wednesday, April 19. The Denali National Park, AK forecast for Apr 19 is 47 degrees and Patchy rain possible . There is 69 percentage chance of rain and 12 mph winds from the South-Southeast.
Topics: Introduction Equations Discharge Coefficients Error Messages References. Introduction to Orifice Flow Meter Calculation. Orifice flow meters are used to determine a liquid or gas flow rate by measuring the differential pressure (P1 - P2) across the orifice plate. The two standard pressure tapping arrangements for small bore orifices are shown in the drawings; the location of the pressure taps affects the discharge coefficient somewhat.
Fluid flow velocity in a circular pipe can be calculated with Imperial or American units as. v = 1.274 q / d2. = 0.4085 qgpm / din2 (1). where. v = velocity (ft/s).q = volume flow (ft3/s). d = pipe inside diameter (ft). qgpm = volume flow (US gal./min). = 1.274 q / d2 = 0.4085 qgpm / din2 (1) where v = velocity (ft/s) q = volume flow (ft3/s) d = pipe inside diameter (ft) qgpm = volume flow (US gal./min) din = pipe inside diameter (inches).