Mechanical Engineering - Hydraulics and Fluid Mechanics - Discussion

Discussion Forum : Hydraulics and Fluid Mechanics - Section 1 (Q.No. 14)
14.
The Reynold's number of a ship is __________ to its velocity and length.
directly proportional
inversely proportional
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
12 comments Page 1 of 2.

BVmounica said:   1 decade ago
Apply formula re=row*v*l/meu.

From this re is proportional to v.
(1)

Goutam grover said:   1 decade ago
Because Reynolds no. Help us to tell either the flow of water through pipe is turbulent or laminar. That's why it is directly proportional to velocity and length.

PRASHANT YEUL said:   1 decade ago
The flow of water through pipe is turbulent or laminar that is right answer.

Nethaji said:   1 decade ago
Re=pvl/m. p density and m absolute velocity. so Re directly proportional to v and l.

Mechanical said:   1 decade ago
Reynolds number = ratio of inertia force to viscous force.
viscous force = ((mue)*(v/L)*a.

SO IT IS DIRECTLY PROPORTIONAL TO THIS.

Kartik t said:   1 decade ago
What is Reynold's number?

Rakesh kumar said:   1 decade ago
Reynold's number is show of flow of water.

Example laminar and turbulent flow:

Rn<2000 laminar flow.

Rn>4000 turbulent flow.

Radha Choudhary said:   10 years ago
Turbulent or laminar flow is determined by the dimensionless Reynolds Number.

The Reynolds number is important in analyzing any type of flow when there is substantial velocity gradient (i.e. , shear). It indicates the relative significance of the viscous effect compared to the inertia effect. The Reynolds number is proportional to inertial force divided by viscous force.

RK CHHIMPA said:   9 years ago
Guys still I don't get how it's directly proportional to its velocity and length. Please explain me.

BalaRaje said:   8 years ago
Reynold number = density * average velocity * diameter ÷ dynamic viscosity. It's Reynold number formula.


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