Correct Answer - Option 1 : Less than 2000
The correct answer is option 1) i.e. Less than 2000.
CONCEPT:
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Streamline flow: In fluids the flow in which the fluids flow in parallel layers such that there is no intermixing of the layers and also, the velocity of each fluid particle at a given point passing by remains constant with time is known as Streamline Flow.
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Reynold's number: The ratio of fluid's inertial force and its viscous force is called Reynolds number.
- Mathematically Reynolds number is given by:
\(R = \frac{\rho v D}{\mu}\)
where R is Reynolds number, ρ is the fluid density,v is the velocity, D is the diameter of the pipe, μ is the viscosity of the fluid.
EXPLANATION:
- For laminar flow, the value of Reynold's number should be less than 2000. Therefore option 1 is correct.
- For Reynold's number greater than 4000, the flow is turbulent flow.
- For Reynold's number between 2000 to 4000, the flow is transient flow.
