Orifice Flow V1.1

The measurement of fluid flow in pipes and conduits utilizing orifice plates is a prevalent technique within industrial settings. This application facilitates rapid calculation of flow rates for both liquids and gases based on standardized parameters aligned with the selected model. Users have the option to choose from a list of fifteen commonly used industrial fluids, enhancing its utility for practicing engineers and design professionals engaged in flow analysis and system design.

A representative case study demonstrating CO2 flow rate calculation is included in the accompanying screenshot. The results achieved align closely with industry-standard methods, exhibiting a discrepancy of less than 0.1%. For fluids not listed, users can create custom fluid profiles by inputting relevant property data, which can then be saved and reused to streamline future computations using the app’s built-in model.

Supported fluids include:

• Air
• Steam
• Water
• Nitrogen
• Oxygen
• Hydrogen
• Helium
• CO2
• Methane
• Ethane
• Chlorine
• Ammonia
• Argon
• Hydraulic oil
• HFC (R410A)
• Custom (user-defined)

Regarding orifice configurations, the application provides four standard orifice geometries along with recommended discharge coefficients, as shown in the provided screenshot. It also details the underlying calculation model used for flow rate determinations for both liquids and gases, applicable even to nozzles and venturi meters where the discharge coefficient (Cd) approaches unity.

The essential parameters required for measurement include fluid inlet temperature and pressure, orifice geometry, and pressure differential obtained via standard pressure taps per ISO 5167. The app employs recommended discharge coefficients based on orifice geometry but allows users to modify these values utilizing manufacturer data for enhanced accuracy. An accompanying notes section offers a brief overview of various orifice parameters for quick reference.

The unit measurement system is customizable, supporting both SI and USCS units for flow and pressure drop. Users can tailor their selections conveniently within the fluid picker interface. Additionally, comprehensive documentation explaining the implementation and validation of the underlying mathematical models is accessible through provided links, supplemented by industry case studies highlighting practical applications.