Venturi meter problems, bernollis principle, equation of. To calculate the flowrate of a fluid passing through a venturi, enter the parameters below. Fm 308 flow measurement by venturi and orifice meter. The mass flow rate can be measured using the hydraulics. The pressure along the meter is obtained using the 11 pressure taps at the locations shown on the diagram. Venturimeter a venturimeter is a device used for measuring the rate of flow of fluid flowing. They are categorized as fullbore meter as measurement of the fluid takes place when it flows through a conduit or channel. When water flowing through this cone the area is decreasing, therefore, the. The pitot static is often used for measuring the local velocity in pipes or ducts. Venturi meter is a device or component which is used for measuring the rate of flow. It has no projections into the fluid, no sharp corners and no sudden changes in contour. Water from the hydraulic bench enters the equipment through a venturi meter consisting of a short nozzle, a throat, and a long diffuser.
The default calculation involves air passing through. Venturi meter, orifice meter, and pitot tube are widely used head flow meters in the industry. A venturi meter is used to measure the flow rate through a tube. Pdf flow through a venturi meter orifice rotameter. A cfd simulation of water flow through a venturi meter article pdf available in international journal of current research vol 6issue 3. The water flow rate can be adjusted using the valves on the hydraulics bench. Next, the water flows into a rapidly diverging section cd, followed by a settling length where the flow again adjusts to uniform conditions, and then through an orifice plate ef. For measuring flow in enclosed ducts or channels, the venturi meter and orifice meters are more convenient and more frequently used. These changes can be used to measure the flowrate of the fluid. Differential pressure flow meters, consisting of orifice, flow nozzle, and venturi meters. It works on the basic principle of bernoullis equation. Pdf venturi tube plays a very important role in different fields of engineering. This physics video tutorial provides a basic introduction into the venturi meter and how it works. It is based on the use of the venturi effect, the reduction of fluid pressure that.
For two different water flow rates do the following. They are categorized as fullbore meter as measurement of the fluid takes place when it flows through. Energy losses through venturi, orifice, and rotameter flowmeters. A fluid passing through smoothly varying constrictions experience changes in velocity and pressure. Energy losses through venturi, orifice, and rotameter. Each meter works by its ability to alter a certain physical property of the flowing fluid and then allows this alteration to be measured. In simple language, this is defined as the sum of pressure energy, kinetic energy per unit volume and potential energy per unit volume equal in the same direction. The converging inlet section decreases the area of the. The flow rate controlled by a gate valve located at the discharge side of the hydraulics bench. These flow meters are also known as variable head meters. Definition, parts, working, derivation, applications. Pdf a cfd simulation of water flow through a venturi meter. Venturi meter and orifice meter are the commonly used flow meters for measuring massvolumetric flow rate or velocity of the flowing fluid. Flow through a venturi meter from maae 2300 at carleton university.
The venturi effect is the reduction in fluid pressure that results when a fluid flows through a constricted section of pipe. Part 1 of the third fluids lecture as part of the module thermodynamics and fluids ufmequ201, given on 081110. A schematic of the venturi meter is shown on the diagram at the end of the procedure. Fm 308 flow measurement by venturi and orifice meter chemical. The principle of venturimeter is that when a fluid flows through the venturimeter, it accelerates in the convergent section and decelerates in the divergent section, resulting in a drop in the static pressure followed by a pressure recovery in the flow direction. When a venture meter is placed in apipe carrying the fluid whose flow rate is to be measured, a pressure drop occurs between the entrance and throat of the. Pdf cfd analysis of flow through venturi tube and its discharge. It is a variable areameter works on the principle of upthrust force exerted by fluid and force of gravity.
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