Mechanical Engineering - Hydraulics and Fluid Mechanics - Discussion
Discussion Forum : Hydraulics and Fluid Mechanics - Section 2 (Q.No. 2)
2.
The velocity corresponding to Reynold number of 2800, is called
Discussion:
27 comments Page 1 of 3.
Sarath said:
6 years ago
When Reynold's number is between 2000 and 2800, the flow is neither laminar nor turbulent. The velocity corresponding to Reynold's number of 2000, is called lower critical velocity and the velocity corresponding to Reynold's number of 2800, is called higher critical velocity.
(5)
Kamal said:
5 years ago
Re<2000 laminar flow, Re>4000 turbulent flow. So it is 2800 turbulent flow high critical energy.
Mach no<1 subsonic flow, Mach no=1 sonic flow, Mach no>1 supersonic flow special case Mach no.
1to6 hypersonic flow.
Mach no<1 subsonic flow, Mach no=1 sonic flow, Mach no>1 supersonic flow special case Mach no.
1to6 hypersonic flow.
(4)
Raushan Kumar said:
6 years ago
Higher critical velocity-at which flow changes from transition state to turbulent.
(3)
Raushan Kumar said:
6 years ago
Flow in pipes Re <2000 - laminar.
Flow in pipes Re 2000-4000 - transition.
Flow in pipes Re >4000 - turbulent.
Flow in pipes Re 2000-4000 - transition.
Flow in pipes Re >4000 - turbulent.
(3)
Somes Mahanti said:
4 years ago
At critical velocity of a fluid, what is the Reynolds' no? Please explain.
(2)
Mahe I said:
4 years ago
So Mach number depends on the speed of sound waves and Reynolds number used to measure type of flow and Q asked type of velocity not a flow.
(1)
Tagese said:
8 years ago
@Girish Changavi, It should be
If Re <2000, tts laminar flow.
If Re > 4000 its turbulent flow.
If between 2000 to 4000 its transition flow.
Here Re is 2800, so it's not higher critical velocity.
If Re <2000, tts laminar flow.
If Re > 4000 its turbulent flow.
If between 2000 to 4000 its transition flow.
Here Re is 2800, so it's not higher critical velocity.
Himanshu Mittal said:
7 years ago
If flow changes from laminar to transition implies lower critical and from the transition to turbulent implies higher critical.
Re 2800 means transition flow to laminar ie upper critical.
Re 2800 means transition flow to laminar ie upper critical.
Aniruddh said:
7 years ago
It's not given whether the flow is in a pipe or flat plate?
Kavya said:
8 years ago
What if Reynolds number =2000?
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