Venturi meter experiment

This type of pressure measurement may be more convenient, for example, to measure fuel or combustion pressures in jet or rocket engines. Let the water flow through the system for a while.

Venturi meter experiment diagram

Main article: Pressure head As fluid flows through a venturi, the expansion and compression of the fluids cause the pressure inside the venturi to change. Open fully the discharge valve. When the fluid flows through the Venturi the pressure in the two ends of the tube will differ, forcing the liquid to the "low pressure" side. Summary of Theory Consider the flow of an incompressible fluid through the convergent-divergent pipe shown in Fig. The manometer panel has a scale behind the manometer tubes for direct reading of the water levels in the tubes. TecQuipment Hydraulic Bench, H1. Carburetors that use the effect to suck gasoline into an engine's intake air stream Wine aerators , used to infuse air into wine as it is poured into a glass The capillaries of the human circulatory system , where it indicates aortic regurgitation Aortic insufficiency is a chronic heart condition that occurs when the aortic valve 's initial large stroke volume is released and the Venturi effect draws the walls together, which obstructs blood flow, which leads to a pulsus bisferiens.

They also note the pressure distribution along the rest of the meter. Placing a liquid in a U-shaped tube and connecting the ends of the tubes to both ends of a Venturi is all that is needed. Once it is done, open the drain and let the water flow into the sump tank.

Set the water level of manometer tube C at approximately 10mm.

Venturi meter apparatus

Set the water level of manometer tube C at approximately 10mm. A manometer panel holds the manometer tubes vertically. At the end of the system, a mixture of liquid and gas will appear. They measure the head at the cross-sectional area at the upstream section, and the head at the throat section. Protein skimmers filtration devices for saltwater aquaria In automated pool cleaners that use pressure-side water flow to collect sediment and debris The barrel of the modern-day clarinet , which uses a reverse taper to speed the air down the tube, enabling better tone, response and intonation[ citation needed ] [5] Venturi scrubbers used to clean flue gas emissions Injectors also called ejectors used to add chlorine gas to water treatment chlorination systems Steam injectors use the Venturi effect and the latent heat of evaporation to deliver feed water to a steam locomotive boiler. However, it has many more pressure tappings, connecting to water manometers, which allow full study of the pressure distribution along the convergent-divergent passage. Record the time in Table 2.

The base has adjustable feet. Main article: Pressure head As fluid flows through a venturi, the expansion and compression of the fluids cause the pressure inside the venturi to change. Once it is done, open the drain and let the water flow into the tank.

Venturi meter experiment in fluid mechanics

TecQuipment Hydraulic Bench, H1. Piezometer tubes at these sections register h1, h2, and hn as shown. Record the time in Table 2. Close the discharge valve. The benches measure flow rate, so students can find the Venturi meter coefficients over a range of flow conditions. See aspirator and pressure head for discussion of this type of siphon. Emptying bilge water from a moving boat through a small waste gate in the hull—the air pressure inside the moving boat is greater than the water sliding by beneath A scuba diving regulator to assist the flow of air once it starts flowing In recoilless rifles to decrease the recoil of firing Ventilators The diffuser on an automobile Race cars utilising ground effect to increase downforce and thus become capable of higher cornering speeds, from the late s until such technology was banned from competition in the early to mids Large cities where wind is forced between buildings - the gap between the Twin Towers of the original World Trade Center was an extreme example of the phenomenon, which made the ground level plaza notoriously windswept. They also note the pressure distribution along the rest of the meter. Figure 1: Arrangement of Venturi meter apparatus. The manometer panel has a scale behind the manometer tubes for direct reading of the water levels in the tubes. Sandblasting nozzles use Venturi effect to accelerate air and media mixture. Place the PVC tubing into the drain hole.

Record the water level of the piezometer tubes labeled A and C in Table 3. Plastic materials and corrosion-resistant finishes throughout the equipment protect against corrosion.

venturi meter experiment viva questions

The first large-scale Venturi meters to measure liquid flows were developed by Clemens Herschel who used them to measure small and large flows of water and wastewater beginning at the end of the 19th century. Emptying bilge water from a moving boat through a small waste gate in the hull—the air pressure inside the moving boat is greater than the water sliding by beneath A scuba diving regulator to assist the flow of air once it starts flowing In recoilless rifles to decrease the recoil of firing Ventilators The diffuser on an automobile Race cars utilising ground effect to increase downforce and thus become capable of higher cornering speeds, from the late s until such technology was banned from competition in the early to mids Large cities where wind is forced between buildings - the gap between the Twin Towers of the original World Trade Center was an extreme example of the phenomenon, which made the ground level plaza notoriously windswept.

Venturi meter calculation example

Repeat steps 11 to 14 to obtain an additional 5 sets of water level reading A and C with different flow rates. Record the time in Table 3. Close the discharge valve slightly to obtain a different flow rate increase the water level of manometer tube C by approximately 10mm. Open fully the flow control valve on the right side of the hydraulic bench. They also note the pressure distribution along the rest of the meter. See aspirator and pressure head for discussion of this type of siphon. Students can compare ideal pressure distribution to measured pressure distribution and calculate the coefficients of discharge for the meter.
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(PDF) Experiment No. 3 CHARACTERISTIC OF VENTURI METER