# What is Venturimeter? | Definition, Advantages, Disadvantages – Hydrodynamics

## What is Venturimeter? | Definition, Advantages, Disadvantages – Hydrodynamics

We are giving a detailed and clear sheet on all Physics Notes that are very useful to understand the Basic Physics Concepts.

Venturimeter Definition:
It is a device used for measuring the rate of flow of liquid through pipes. Its working is based on Bernoulli’s theorem.
Rate of flow of liquid,

v = a1a2$$\sqrt{\frac{2 g h}{a_{1}^{2}-a_{2}^{2}}}$$

where, a1 and a2 are area of cross-sections of tube at broader and narrower part and h is difference of liquid columns in vertical tubes.

Advantages:

• Low losses.
• Suitable for the large diameter of the pipe.
• It can be installed vertically, horizontally, inclined.
• Less chance of getting stuck with sediment.

Disadvantages:

• They are large in size and, therefore, where space is limited, they can not be used.
• Maintenance is not easy.
• Required more space.
• It is expensive in installation and replacement.
• It is not suitable for pipe diameter below then 75mm.

Hydrodynamics:
In physics, hydrodynamics of fluid dynamics explains the mechanism of fluid such as flow of liquids and gases. It has a wide range of applications such as evaluating forces and momentum on aircraft, prediction of weather, etc.