Question

What are the characteristic of an ideal
liquid what are streamline flow and turbulent flow of liquid explain it on the basis of Reynolds number

Answer 1

Answer:

Characteristics of an ideal liquid are :

1. It should be non-viscous ( that means it's not going to offer any frictional force to the surface while flowing)

2. The will be no Surface Tension due to negligible Viscosity.

3. The liquid should be incompressible . Pressure won't have any effect on its density .

$\boxed{ \red{ \sf{Reynolds \: number}}}$

Formula for Reynolds Number is :

$\boxed{ \huge{ \green{R = \frac{ \rho \: v \: d}{ \eta} }}}$

If the value of R is

• greater than 2000 , then turbulent flow
• lesser than 2000, then streamline flow.

Answer 2

Answer:

Characteristics of an ideal liquid ( very similar to Newtonian Fluids) are as follows :

• They are incompressible
• They are non-viscous ( has no internal resistance)
• They do not have Surface Tension
• They follow Streamline motion and not Turbulent flow.
• They follow Bernoulli's Equation of Fluid flow.

❖ Stream line flow is defined as that kind of fluid flow where the direction or vector of velocity of all fluid particles are in same direction at a particular position.

❖ Turbulent flow is that flow where the direction of fluid flow is not same for all particles at that particular position.

$\boxed{ \red{Reynolds \: Number}}$

It's a dimension-less quantity representing if a fluid flow is turbulent or streamline.

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \boxed{ \boxed{ \red{ \large{R = \frac{ \rho \: v \: d}{ \eta}}}}}$

If the value of R is

• > 2000 , then flow is turbulent.
• < 2000 , then flow is streamline.