Chemical Engineering - Fluid Mechanics - Discussion

Discussion Forum : Fluid Mechanics - Section 1 (Q.No. 2)
Laminar flow of a Newtonion fluid ceases to exist, when the Reynolds number exceeds
Answer: Option
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14 comments Page 2 of 2.

Surya Teja said:   8 years ago
Let is assume the question is for circular pipe based on options given. But, the question is when will the Laminar flow cease? I think, once the fully turbulent flow is achieved, which is after crossing Re 4000. Then only we can say there is no laminar flow.

Mahone said:   7 years ago
For circular pipes, the Reynolds number is used to classify flows as follows.

<2000 laminar flow.
2000-4000. Transitional flow.
>4000 turbulent flow.

Sanjeev gupta said:   5 years ago
Laminar flow equal and less than 2100 Reynolds number.

Mishree lal said:   4 years ago
For laminor flow Reynolds number is equal or less than 2100.

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