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FLOWLAB SOLUTION
9.121
Use the
cylinder
template in FlowLab to investigate how the viscous and
inviscid surface pressure coefficient distributions,
C
p
=
p
/(
ρU
2
/2), differ for flow past a
circular cylinder.
For the viscous case, choose a Reynolds number between Re = 10 and
40 (so the steady solver can be used) by selecting appropriate values for the cylinder
radius, free stream velocity, density, and viscosity.
Use the same values, other than
viscosity, for the inviscid case.
For each case, plot the pressure coefficient distribution as
a function of location on the surface of the cylinder and explain the differences in the two
results.
Problem Setup
The default cylinder radius was used for this problem:
Given the Reynolds number range, the Laminar condition was selected for the viscous
simulation.
For Re < 40, it is advised to use the steady flow solver, as shown below.
For
this simulation, the Boundary Condition and Materials were altered to give Re = 20.
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 Spring '08
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