Question

The velocity at which the flow changes from laminar flow to turbulent flow is called (

Answer 1

Answer:

critical velocity

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Answer 2

Answer:

The velocity at which the flow changes from laminar flow to turbulent flow is called CRITICAL VELOCITY.

Explanation:

Critical velocity only determines that the flow is either laminar or turbulent.

Experimentally, the value of the upper critical Reynolds number has been found to be approximately 2300 .

$\mathrm{R}_{\mathrm{e}} < 2000 \rightarrow Laminar flow\\2000 < R_{e} < 4000 \rightarrow Transition flow\\\\\mathrm{R}_{\mathrm{e}} > 4000 \rightarrow Turbulent flow$

$R_{e} = Reynolds number$

• Reynolds number is a dimensionless quantity that is used to determine the type of flow pattern as laminar or turbulent while flowing through a pipe.
• Reynolds number is defined by the ratio of inertial forces to that of viscous forces.