Related Experiment Video
Updated: May 23, 2025

Protocol for Relative Hydrodynamic Assessment of Tri-leaflet Polymer Valves
Published on: October 17, 2013
Determination of the constant pressure loss for a new segmented orifice with an inclined inflow plane
Marcin Heronimczak1, Andrzej Mrowiec2, Mariusz Rząsa3
1Faculty of Polytechnics, Department of Electrical Engineering and Mechanics, University of Kalisz, 62-800, Kalisz, Poland. m.heronimczak@uniwersytetkaliski.edu.pl.
Abstract:
A key innovation of this study is the first-ever experimental determination of the ratio of permanent to total differential pressure loss (Δploss/Δp) for a segmented orifice with an inclined inflow plane-a geometry not standardized in any current measurement norms. While previous investigations by the authors focused on flow characteristics, this paper uniquely quantifies energy-related pressure losses, showing that a 60° inclination reduces permanent pressure loss by up to 4.9% compared to conventional 90° orifices. A combined experimental and numerical approach was applied to evaluate three orifice geometries with water as the working fluid. CFD simulations using the Transition SST model guided the optimization of pressure tapping locations. The results indicate that the inclined design improves flow stability and measurement reliability while reducing pressure losses. The findings suggest that the segmented inclined orifice is a cost-effective and energy-efficient alternative to conventional differential pressure flowmeters in industrial applications.
Related Concept Videos
Pipe Flowrate Measurement
The orifice meter is a simple,...
Bernoulli's Equation for Flow Normal to a Streamline
The pressure difference depends on the fluid's velocity and radius of curvature. The pressure variation is minimal in flows with nearly straight streamlines.
Concept of Pressure at a Point
In a fluid at rest, pressure acts equally in...
Conservation of Mass in Fixed, Nondeforming Control Volume
In the case of a sewer pipe, which can be modeled...
Minor Losses in Pipes
Valves play a significant role in generating minor losses by obstructing or redirecting the fluid flow. When a valve is closed or partially closed, it restricts the flow...
Major Losses in Pipes
Fluid flow can be classified as laminar or turbulent, primarily based on the Reynolds number. This dimensionless number reflects the relative influence of inertial to...

