Pipe flow calculators

Pressure drop calculator

  • Calculate pressure drop for known flow rate
  • Calculate flow rate for known pressure drop
  • Friction factor calculation
  • Friction and minor losses calculation
  • Darcy equation based
  • Laminar and turbulent flow
  • Circular and rectangle pipe
  • For incompressible flow only
  • Calculation includes flow velocity

Pipe diameter calculator

  • Calculate pipe diameter for known flow rate and velocity
  • Calculate flow velocity for known pipe diameter and flow rate
  • For liquids and ideal gases
  • Convert from volumetric to mass flow rate
  • Calculate volumetric flow rate of ideal gas at different conditions of pressure and temperature

Reynolds number calculator

  • Calculate Reynolds number
  • Determine if flow is laminar or turbulent
  • For liquids and ideal gases
  • Input either velocity, or volumetric, or mass flow rate and calculate Reynolds number

Natural gas calculator

  • Pressure drop in natural gas pipeline
  • Applicable for natural gas lines over 1 bar
  • Calculate flow rate from known pressure diffference
  • Input either volumetric flow rate on standard conditions or mass flow rate
  • Calculate volumetric flow rate at upstream and downstream end of pipe line at real conditions
  • Calculate velocity at upstream and downstream end of pipe

Gas control valve calculator

  • Calculate flow coefficient Cg or Kg of gas control valve or gas pressure regulator
  • Calculate maximum capacity of control valve or pressure regulator for known upstream and downstream pressure
  • Calculate pressure drop that control valve is creating for known flow rate and flow coefficient Cg or Kg
  • Select correct gas control valve or pressure regulator from manufacturer's flow table
  • Input either volumetric flow rate on standard conditions or mass flow rate

Control valve sizing calculator

  • Select liquid control valve size
  • Calculate flow coefficient Cv or Kv of liquid control valve for known flow capacity and pressure difference
  • Calculate maximum flow capacity of control valve for known flow coefficient Cv or Kv and pressure difference
  • Calculate pressure difference for know flow coefficient Cv or Kv and flow capacity
  • Convert from volumetric to mass flow rate
  • Input either diameter or flow velocity

Venturi tube calculator

  • Calculate flow rate through Venturi tube based on the created pressure drop by Venturi effect
  • Calculate velocities on inlet and throat of Venturi tube
  • Calculate Venturi effect on pressure and velocity in Venturi tube
  • Convert from volumetric to mass flow rate
  • Calculate Reynolds number on inlet and throat of Venturi tube
  • For liquids and ideal gases

Orifice flow calculator

  • Calculate flow rate in pipe using orifice plate based on the created pressure drop
  • Calculate flow velocity in front of orifice plate and in the throat
  • Calculate orifice diameters
  • Discharge and expansion factor calculation included
  • Convert from volumetric to mass flow rate
  • Calculate Reynolds number
  • For liquids and ideal gases
  • For corner taps, 1 inch taps and D and D/2 taps

Nozzle and Venturi nozzle

  • Calculate flow rate through Nozzle based on the created pressure drop by Venturi effect
  • Calculate velocities on inlet and throat of Nozzle
  • Convert from volumetric to mass flow rate
  • Calculate Reynolds number on inlet and throat of Nozzle
  • For liquids and ideal gases

Thermal energy calculator

  • Calculate heat energy and thermal power for known flow rate
  • Calculate flow rate for known heat energy or thermal power
  • Convert from volumetric to mass flow rate
  • Applicable for boilers, heat exchangers, radiators, chillers, air heaters

Air flow calculator

  • Isothermal (T=const.) flow of air in a closed pipe
  • Calculate air pressure drop for known flow rate in a pipe
  • Calculate air flow rate for know pressure drop in a pipe
  • Calculate flow velocities on the start and on the end of pipe
  • Friction factor calculation
  • Pressure drop due to minor losses and friction

Isothermal gas flow calculator

  • Isothermal (T=const.) flow of any real gas in a closed pipe
  • Calculate pressure drop for known flow rate in a pipe
  • Calculate flow rate for know pressure drop in a pipe
  • Calculate flow velocities on the start and on the end of pipe
  • Friction factor calculation
  • Pressure drop due to minor losses and friction

Prandtl probe - Pitot tube

  • Flow velocity, Mach number, flow rate, speed of sound calculation
  • Calculate velocity from dynamic pressure
  • Convert from volumetric to mass flow rate
  • For liquids and ideal gases
  • For subsonic and supersonic ideal gas flow

LPG flow calculator

  • LPG flow rate calculation for known heat power
  • LPG heat power calculation for known flow rate
  • Pipe diameter calculation for liquid and gas phase
  • LPG flow velocities calculation for liquid and gas phase
  • For propane and butane different mixture ratios

Resistance factor K calculator

Resistance factor calculation for:

  • elbows
  • bends
  • tees
  • pipe entrance
  • pipe exit
  • pipe contraction
  • pipe enlargement
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