 # Bernoulli’s Equation (Kinematics and Dynamics of Flow Part-5)

#### 3. Fluid is incompressible

##### Bernoulli’s equation can b obtained by Euler’s equation as follows ##### As during deriving Bernoulli’s equation, we assumed that fluid is incompressible i.e. ρ = constant  ##### In real life, no fluid is ideal fluid and Real fluid are viscous in nature and hence will offer resistance to the flow. Bernoulli’s equation can be modified for real fluids by taking the head loss into account. ### Applications of Bernoulli’s Equation

#### Venturimeter: With the help of this instrument rate of flow of fluid is measured through the pipe. ##### By applying Bernoulli’s equation between point 1 & 2, we get ##### If in equation, we use the differential U-tube manometer to give the value of h, then it is given by  where x is the difference of heavier column in U-tube

Hg is liquid filled in manometric tube

L is the liquid flowing inside venturimeter

#### Pitot Tube: With the help of this instrument the velocity of flow at any point in pope or channel can be measured.

It consists of a glass tube bent at a right angle.

It works on the principle that: If velocity of flow at any point becomes zero, then the pressure is increased at that point because kinetic energy converts into pressure energy. Now applying Bernoulli’s equation between points 1 & 2. ### I hope you like this section. Please share with friends and like my Facebook page and never miss an update.

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