at what Reynolds number for non-Newtonian fluids flow that the laminar region end ??

the best future · May 20, 2012, 19:23

Hi all

My investigation is about non-Newtonian fluids flow through the sudden expansion duct in both laminar and turbulent region
My problem .... i do not know at any Reynolds number that the laminer region finish and at what value the turbulent will begin???? .. my work will complete if you help me .. i need to know at what Reynolds number that the laminar region end???

thank you

the best future · May 21, 2012, 17:40

I need your help please ......

abhaykrsahu · May 22, 2012, 01:26

for flat plate it should be more than 5 x 10^5 and for pipe flow it should be more than 2300

the best future · May 22, 2012, 07:48

thank u so much abhaykrsahu for your help. but is this information true for non_Newtonian fluids ? or it is for newtonian fluid?

abhaykrsahu · May 22, 2012, 07:56

its for newtonian fluid....in case of non newtonian fluid which are highly viscous...they can be considered as laminar flow..... i do not have any idea about specific values

May 20, 2012, 19:23	at what Reynolds number for non-Newtonian fluids flow that the laminar region end ??	#1
the best future New Member sarah Join Date: May 2012 Posts: 3 Rep Power: 14	Hi all My investigation is about non-Newtonian fluids flow through the sudden expansion duct in both laminar and turbulent region My problem .... i do not know at any Reynolds number that the laminer region finish and at what value the turbulent will begin???? .. my work will complete if you help me .. i need to know at what Reynolds number that the laminar region end??? thank you

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May 21, 2012, 17:40		#2
the best future New Member sarah Join Date: May 2012 Posts: 3 Rep Power: 14	I need your help please ......

May 22, 2012, 01:26		#3
abhaykrsahu New Member Abhay Join Date: May 2012 Location: Mumbai Posts: 2 Rep Power: 0	for flat plate it should be more than 5 x 10^5 and for pipe flow it should be more than 2300

May 22, 2012, 07:48		#4
the best future New Member sarah Join Date: May 2012 Posts: 3 Rep Power: 14	thank u so much abhaykrsahu for your help. but is this information true for non_Newtonian fluids ? or it is for newtonian fluid?

May 22, 2012, 07:56		#5
abhaykrsahu New Member Abhay Join Date: May 2012 Location: Mumbai Posts: 2 Rep Power: 0	its for newtonian fluid....in case of non newtonian fluid which are highly viscous...they can be considered as laminar flow..... i do not have any idea about specific values