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RESULTS FROM DNS OF TURBULENT FLOW
AROUND A SQUARE CYLINDER AT Re=22000
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| Name | Last modified | Size | Description |
|---|---|---|---|---|
| Parent Directory | - | ||
| CYL_schema.eps | 2024-02-01 13:00 | 22K | |
| Cyl22K.tar.gz | 2024-02-01 13:00 | 371M | |
| README | 2024-02-01 13:02 | 3.0K | |
| XYsection/ | 2022-03-30 12:02 | - | |
| dynamics/ | 2024-02-01 13:01 | - | |
| movie/ | 2022-03-30 12:02 | - | |
| profiles/ | 2022-03-30 12:02 | - | |
Description:
A schema of the problem is displayed in the file CYL_schema.eps.
The
dimensionless Reynolds number (Re) is based on the inflow
velocity, U,
and the cylinder width, D. The dimensions of the
computational domain
are 30.5D×54D×πD in the stream-wise, cross-stream and
span-wise
direction, respectively. The upstream face of
the cylinder is located
at 10D from the inflow and centered in the
cross-stream
direction. The origin of coordinates
in placed at the center of the
cylinder. Regarding the
boundary conditions, a
constant velocity
profile, u = (U, 0, 0),
is imposed at the inflow
whereas convective
boundary
conditions are
used at the
outflow. The
Neumann
boundary
condition is
adopted in
the
cross-stream
direction.
Periodic
boundary
conditions
are
imposed
in the
span-wise
direction.
Finally,
no-slip
boundary
conditions
are
imposed
at
the
surface
of
the
cylinder.
Hereafter,
the
results
are
presented
in
dimensionless
form
where
the
reference
length,
velocity,
time
and
kinematic
pressure
are
D,
U,
D/U,
U^2/2,
respectively.
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Contents:
dynamics --> time-evolution of the drad and lift coefficient.
movie
-->
visualization
of
the
Kelvin-Helmholtz
structures
and
the
Von
Kárman
vortex
street.
It
displays
the
instantaneous
magnitude
of
the
pressure
gradient.
profiles
-->
time-averaged
profiles
at
different
locations.
Labelling:
Cyl22K_Aabc
(or
Cyl22K_Aabcd)
where
'A'
is
the
axis
and
'abc'
corresponds
to
the
a.bc
(or
a.bcd)
position
in
that
axis
Note:
a
minus
sign
between
'A'
and
'a'
refers
to
negative
positions
Ex:
Cyl22K_X040
is
the
profile
at
X=0.40
Cyl22K_X0125
is
the
profile
at
X=0.125
Cyl22K_X-030
is
the
profile
at
X=-0.30
XYsection
-->
time-averaged
flow
Note:
this
file
is
in
2D
Cartesian
format
for
Tecplot
The
table-headers
at
the
beginnig
of
all
the
files
should
be
sufficient
to
explain
the
contents
of
the
files.
File Cyl22K.tar.gz contains all the above-described information.
For
more
details
you
can
contact:
cttc@cttc.upc.edu
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