Chemical Engineering - Fluid Mechanics - Discussion

Discussion Forum : Fluid Mechanics - Section 1 (Q.No. 2)
2.
Laminar flow of a Newtonion fluid ceases to exist, when the Reynolds number exceeds
4000
2100
1500
3000
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
14 comments Page 1 of 2.

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.
(4)

Sanjeev gupta said:   5 years ago
Laminar flow equal and less than 2100 Reynolds number.
(1)

Mishree lal said:   4 years ago
For laminor flow Reynolds number is equal or less than 2100.
(1)

Niki said:   1 decade ago
For laminar flow, Re should be equal to or less than 2100.

Vishwas said:   1 decade ago
Laminar flow is less than or equal to 2100.

Chitta said:   1 decade ago
The above question doesn't mention about the system.
we have two type of value for laminar.

1. for circular pipe----- Re<= 2100
2. for flat plate ------- Re<= 5*10^5

B.Nath said:   1 decade ago
For flow in a conduit:
Re<2100 Laminar Flow, Sheer Stress depends on viscosity but not on density.
2100<Re<4000 : Transient Flow
Re>4000 Turbulent flow depends on density.

Jyoti said:   1 decade ago
This is true only in case of flow through pipes. we cannot generalize this for every case. Re num is different for every case.

Kalaivani said:   1 decade ago
For Laminar flow, Reynold's number is less than or equal to 1(Re <= 1).

Dhruvin virani said:   1 decade ago
Laminar flow is less than or equal to 2100. And Re>4000 Turbulent flow.


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