Advanced Thermal Fluids
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Prandtle Number Calculator
P
r
=
ν
α
=
c
p
μ
k
Specific Heat ($c_p$):
J/(kg.K)
J/(gr.K)
cal/(gr.C)
Dynamic Viscosity ($\mu$):
Pa.s
gr/cm s
dyne s/cm^2
centiPoise
kg/m h
lb/ft s
lb/ft h
Thermal Conductivity ($k$):
W/(m.K)
W/(cm.K)
cal/s/cm/C
BTU.in/s/ft^2/F
Kinematic Viscosity (Momentum Diffusivity) ($\nu$):
m^2/s
m^2/hr
ft^2/hr
stokes
in^2/s
Thermal Diffusivity ($\alpha$):
m^2/s
m^2/hr
ft^2/hr
stokes
in^2/s
Prandtle Number ($Pr$):
dimensionless
$$ Pr = \frac{\nu}{\alpha}=\frac{c_p \mu}{k} $$