A simple device for the demonstration of Bernoulli's Law. Similar devices fine extensive application in everything from carburetors of IC engines to aircraft airspeed indicators. Comprising of a horizontal glass tube having three cross sections along its length – wide, narrow and wide respectively, with wide cross-sections having same size. One short, side tube projects from each of the three cross-sections for connecting to the manometric tubes. Also included is a three legged manometric tube joined to a common horizontal tube. When gas is flowing through the venturi tube with manometer filled with colored water, the relative pressure at the three points of the tube is evident from the water level in manometers.
Features
Visual Demonstration: The transparent construction allows students to visually observe the fluid flow and the corresponding water levels in the manometers, which directly reflect the static pressure distribution along the tube.
Multiple Measurement Points: Typically, there are 7 to 8 pressure taps along the test section to provide a detailed pressure profile (static head). Manometer Bank: An attached multi-tube manometer, often with a hand pump for adjusting baseline pressure, displays the pressure differentials (head loss) in millimeters of water column.
Flow Control: A flow control valve on the outlet allows for varying flow rates, enabling experiments across different flow conditions.
Durability and Portability: The core apparatus is often compact and made from durable materials for repeated classroom or laboratory use. Compatibility with Ancillary Equipment: It is designed to work with a hydraulics bench for water supply and a volumetric measuring tank for calibrating flow rates.