Question
Download Solution PDFWhich of the following parameter of fluid flow does not effect its Reynold's Number ?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
- Reynolds number is a dimensionless formula that is used to differentiate laminar flow from turbulent flow.
- Reynolds number is given by,
Where, ρ = Density of fluid, V = Mean velocity of fluid, L = Characteristic length, μ = Dynamic viscosity of the fluid
- As per definition, Re does not dependent on the temperature of the fluid flow so it does not affect Reynold's Number hence option 3 will be the right answer.
In the case of pipe flow,
Additional Information
For the flow through pipe,
- If Re ≤ 2000 then flow is laminar
- 2000 ≤ Re ≤ 4000 then flow is transitional
- Re ≥ 4000 then flow is turbulent
So, at low velocity and higher viscosity will result in a lower value of Re number.
The low value of the Reynolds number shows laminar flow.
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