# How do you calculate the flow rate of a Venturi meter?

## How do you calculate the flow rate of a Venturi meter?

Venturi Flow Equation and Calculator

1. Preview: Venturi Flow Calculator.
2. and.
3. Therefore:
4. and.
5. Qmass = ρ · Q. Where: Q = volumetric flow rate (m3/s, in3/s) Qmass = Mass flowrate (kg/s, lbs/s) A1 = area = Π · r2 (mm2, in2) A2 = area = Π · r2 (mm2, in2) r1 = radius inlet at A1 (mm, in) r2 = radius inlet at A2 (mm, in)

What is Venturi meter PDF?

The rate of fluid flow through a pipe is measured by a venturimeter. It is a device in which pressure energy is converted into kinetic energy and is used to measure the rate of flow through a pipe. Or in other words, a venturimeter is a tube with a constricted throat that increases velocity and decreases pressure.

### What is Venturi meter in fluid mechanics?

A venturi meter is a measuring or also considered as a meter device that is usually used to measure the flow of a fluid in the pipe. A Venturi meter may also be used to increase the velocity of any type fluid in a pipe at any particular point.

What is the application of Venturimeter?

Applications of Venturi Meter: In the industrial sector, it is used to determine the pressure as well of the quantity of gas and liquid inside a pipe. The flow of chemicals in pipelines. This is widely used in the waste treatment process where large diameter pipes are used.

#### What is orifice PDF?

Orifice is.  An opening (hole) at a tank wall or at a horizontal plate on its axis,  The thickness of the wall or plate is very small corresponding to the opening.

What is the difference between Orificemeter and Venturimeter?

Venturi meter and orifice meter are used for measuring the volumetric flow rate of the fluid that based on the continuity equation and Bernoulli’s equation. The difference between venturi meter and orifice meter are: The coefficient of discharge in the venturi meter is 0.98 while in orifice meter it is 0.6.

## What are the main parts of a venturi meter?

A venturimeter consists of four parts:

• Cylindrical Inlet Section.
• Conical convergent Section.
• Cylindrical throat and.
• Conical divergent outlet.

What are the main parts of a Venturi meter?

### How does a Venturi meter measure pressure?

A Venturi Meter is a device that allows flow rates through pipes to be calculated by measuring the difference in pressure created by a contraction in a pipe. When the flow goes through the contraction it must speed up, and so the pressure must drop.

How can we use the Venturi meter in the construction?

Applications of venturi meter It is widely used in large diameter pipes such as found in the waste treatment process. It allows solid particles flow through it because of their gradually sloping smooth design; so they are suitable for measurement of dirty fluid. It also be used to measure fluid velocity.

#### What is difference between orifice meter and Venturi meter?

The difference between venturi meter and orifice meter are: The pressure loss in venturi meter is 10% while in the orifice meter the pressure loss is 50-60%. The coefficient of discharge in the venturi meter is 0.98 while in orifice meter it is 0.6.

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