Bernoulli's Equation Flow Meter

Calculate the Bernoulli equation liquid flowrate through a flow meter from delta pressure.

Bernoulli type flow meters are normally installed horizontal so that changes in elevation can be ignored. Fluid friction losses are accounted for by the discharge coefficient Cd. For orifice plate flow meters the discharge coefficient is approximately 0.6. For venturi, ISA 1932 nozzle and long radius type flow meters the discharge coefficient is approximately 0.95.

Tool Input

• schdtype : Pipe Schedule Type
• diamtype : Pipe Diameter Type
  • ODpu : User Defined Pipe Outside Diameter
  • IDpu : User Defined Pipe Inside Diameter
• wtntype : Wall Thickness Type
  • tnpu : User Defined Pipe Wall Thickness
• IDm : Flow Meter Inside Diameter
• ρ : Density
• Pp : Pipe Static Pressure
• Pm : Flow Meter Static Pressure
• Cd : Discharge Coefficient

Tool Output

• IDp : Pipe Inside Diameter
• M : Mass Flow Rate
• Q : Volume Flowrate
• Vm : Flow Meter Velocity
• Vp : Pipe Velocity

Calculate Bernoulli equation salt water density from temperature and practical salinity at atmospheric pressure (TEOS-10 seawater).

Practical salinity = parts per thousand of dissolved solids (mainly salt). The absolute salinity is taken as 35.16504 / 35 times the practical salinity. The absolute salinity anomaly δSA is ignored. Use the Result Plot option to plot density versus temperature.

Reference : TEOS-10 Thermodynamic Equation Of Seawater (2010)

Tool Input

• T : Seawater Temperature

Tool Output

• ρ : Seawater Density