LMNO Engineering logo LMNO Engineering, Research, and Software, Ltd.

Q=VA Flow Rate Calculator

Compute flow rate from velocity and area

Ducts, Pipes, and Culverts: 
Flowing Full or Partially Full:  Diameter, D (L): 
  Area, A (L2): 
  Velocity, V (L/T): 
  Flow Rate, Q (L3/T): 
Flowing Full:  © LMNO Engineering, Research, and Software, Ltd.
 
  www.​LMNOeng.com


Units in flow rate calculator

You may enter numbers in any units, so long as you are consistent. (L) means that the variable has units of length (e.g. meters). (L3/T) means that the variable has units of cubic length per time (e.g. m3/s).


Flow rate equation

Q = VA. If circular, then A = π D2 / 4

The flow rate calculation does not check for unreasonable inputs such as negative values. All values should be entered as positive.


Discussion

Flow rate is a fundamental parameter for understanding fluid systems. Understanding the flow rate of liquids and gases is important for ensuring safety, efficiency, and process optimization. In many industries, fluid flow rate directly impacts operational efficiency.

Achieving optimal flow rates is necessary in water treatment to ensure proper filtration and purification processes. In the field of hydrology, knowing the flow rate of rivers, streams, and watersheds helps in flood prediction and management - and in predicting pollutant runoff. Additionally, accurate flow rate measurement helps with water resource management.

In manufacturing processes, precise liquid and gas flow rates ensure that materials are mixed or processed in the correct proportions. This helps reduce waste and improves product quality. Further, liquid and gas flow rate monitoring is necessary for compliance with environmental regulations and for minimizing pollution. By understanding and controlling flow rates, companies can optimize their processes, leading to cost savings and enhanced productivity.


© 1998-2024 LMNO Engineering, Research, and Software, Ltd.  All rights reserved.

LMNO Engineering, Research, and Software, Ltd.
7860 Angel Ridge Rd.   Athens, Ohio 45701  USA   Phone: (740) 707-2614
LMNO@LMNOeng.com    https://www.LMNOeng.com