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.
Some Theory: The flow of water in a down pipe is restricted by the size of the entry (ie the entry diameter, throat, or orifice.). Water starts to enter a downpipe as though it was flowing over a weir into the mouth of the downpipe. The weir formula is used to calculate the downpipe size.ome Theory: The flow of water in a down pipe is restricted by the size of the entry (ie the entry diameter, throat, or orifice.). Water starts to enter a downpipe as though it was flowing over a weir into the mouth of the downpipe. The weir formula is used to calculate the downpipe size.