P2.11 Consider a concentric shaft fixed axiálly and ( cylinder.rsh.rey are the radius of shaft and _inside radius of cylinder respectively, with total length L. Let the rotational rate @ rad/s and a applied torque be M .Using these parameters, a) Derive a theoretical relation for the viscosity µ of the fluid between the shaft and cylinder. b) For a shaft of 8cm long, rotating at 1200 rev./min, with and the measured torque is M = 0.293 N.m. What is the fluid viscosity? ötäted inside a [µ = M(rcy– r sh)/(2Twr,L)] = 2.00 cm rsh [µ=0.29 kg/m.s] rcy:2.05

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Chapter5: Analysis Of Convection Heat Transfer
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sF.r.cylinder.rsh Tcy are the radius of shaft and inside radius of cylinder
a
P2.11 Consider a concentric shaft fixed axially and rotated inside
<( cylinder.r3h.ľcy are the radius of shaft and inside radius of cylinder
respectively, with total length L. Let the rotational rate @ rad/s and
applied torque be M .Using these parameters,
a) Derive a theoretical relation for the viscosity u of the fluid between
the shaft and cylinder.
b) For a shaft of 8cm long, rotating at 1200 rev./min, with rsh = 2.00 cm
and the measured torque is M
viscosity?
[µ = M(rcy=r sh)/(2nwr;,L)]
%3D
-
0.293 N.m. What is the fluid
[µ=0.29 kg/m.s]
rey:205
( Cos o 6243.
Transcribed Image Text:sF.r.cylinder.rsh Tcy are the radius of shaft and inside radius of cylinder a P2.11 Consider a concentric shaft fixed axially and rotated inside <( cylinder.r3h.ľcy are the radius of shaft and inside radius of cylinder respectively, with total length L. Let the rotational rate @ rad/s and applied torque be M .Using these parameters, a) Derive a theoretical relation for the viscosity u of the fluid between the shaft and cylinder. b) For a shaft of 8cm long, rotating at 1200 rev./min, with rsh = 2.00 cm and the measured torque is M viscosity? [µ = M(rcy=r sh)/(2nwr;,L)] %3D - 0.293 N.m. What is the fluid [µ=0.29 kg/m.s] rey:205 ( Cos o 6243.
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