Orifice Flow Rate Calculator
Calculate flow rate through an orifice opening
About this calculator
The Orifice Flow Rate Calculator determines the volumetric flow rate of fluid passing through an orifice opening based on pressure differential, orifice diameter, and fluid properties. This tool is essential for engineers, technicians, and researchers working with flow measurement systems, pipeline design, and fluid dynamics applications. It helps optimize system performance, ensure accurate flow measurements, and validate design specifications in industrial processes, HVAC systems, and hydraulic applications.
How to use
Enter the orifice diameter, pressure difference across the orifice, and fluid density into the calculator. Select the appropriate discharge coefficient based on your orifice type and configuration. The calculator will instantly compute the flow rate using the standard orifice equation, providing results in your preferred units.
Frequently asked questions
What is a discharge coefficient in orifice calculations?
The discharge coefficient accounts for energy losses and flow contraction through the orifice. It typically ranges from 0.6 to 0.8 depending on orifice design and Reynolds number.
How does pressure difference affect flow rate?
Flow rate increases with the square root of pressure difference. Doubling the pressure differential increases flow rate by approximately 41% through the same orifice.
What orifice types can this calculator handle?
The calculator works for sharp-edged orifices, rounded orifices, and flow nozzles by adjusting the discharge coefficient value for each specific orifice configuration.