Measurements & Automation for Android
ru
Windows ⁄ Android

Long Radius Nozzle - Liquid

  Example Of Water Flowrate
  Flowrate - Mass
  Calculation of the flowrate [q] for a given differential pressure [Δp].
1. Input values
Calculated valuesSymbolUnitValue
Device diameter at 20 °Cd20mm120,000
Pipe diameter at 20 °D20mm200,000
Device materialsteel AISI 321, S32100
Pipe materialsteel 1030, 1034, 1035, 1038
Arithmetical mean deviation of the roughness profile (Steel new, seamless cold drawn)Ramm0,0100
Uniform equivalent roughnessRkmm0,0300
Operating temperaturet°С75,00
Atmospheric pressurepakPa100,00
Upstream pressurepukPa1900,00
Differential pressureΔpkPa49,00
Operating conditions
Dynamic viscosityμμPa·s378,2349
Density, operating conditionsρkg/m³975,6960

2. Calculation of intermediate values
Calculated valuesSymbolUnitValue
Absolute pressurepkPa2000,00
Thermodynamic temperatureT°K348,15
The temperature coefficient of change in the diameter of the device, caused by temperature deviations from 20 °CKd-1,000000
Device diameter at operating temperaturedmm120,0000
The temperature coefficient of change in the diameter of the pipe, caused by temperature deviations from 20 °CKp-1,000000
Pipe diameter at operating temperatureDmm200,0000
Diameter ratioβ-0,600000
Input rate factorE-1,07187
Expansibility factorε-1,00000

3. Final calculations
Calculated valuesSymbolUnitValue
1-st approximation
Reynolds numberRe-1000000
Discharge coefficientC-0,991442
The roughness coefficient of the internal surface of the pipeKr-1,00000
Mass flowrateqmkg/s117,52506
2-nd approximation
Reynolds numberRe-1978104
Discharge coefficientC-0,992904
The roughness coefficient of the internal surface of the pipeKr-1,00000
Mass flowrateqmkg/s117,69834
DeviationΔ%0,0014744
3-d approximation
Reynolds numberRe-1981020
Discharge coefficientC-0,992906
The roughness coefficient of the internal surface of the pipeKr-1,00000
Mass flowrateqmkg/s117,69865
DeviationΔ%0,0000027