The flow is documented in
Olcmen, M. S. and Simpson, R. L., "Higher Order Turbulence Results
for a
Three-Dimensional Pressure-Driven Turbulent
Boundary Layer," VPI-AOE-237,
1996.
Analysis of the data contained on this disk is contained in
Olcmen, M. S., Simpson, R. L., and Goody, M. C., "An Experimental
Investigation of Two- and Three-Dimensional
Turbulent Boundary Layers,"
VPI-AOE-262, Apr, 1999.
Some relevant flow parameters:
Nominal flow velocity, Uinf = 27.5 m/s
Friction velocity (u-tau)
= 1.15 m/s
Kinematic viscosity
(nu) = 0.0000167 m²/s
Boundary layer thickness (delta) = 3.960 cm
These data are two-point correlations measured with two LDV single-velocity-
component probes. The FIXED probe (probe #1) measured v1, and the
MOVABLE
probe (probe #2) measured v2.
The file name convention is:
L1 denotes fixed probe location 1 (y = 360 microns, y+ =
25)
P?? denotes the plane (z location of the movable probe)
S?? denotes the station (x location of the movable probe)
Y?? denotes the y location of the movable probe
For example:
L1PMBSM7 = Fixed probe at location 1
Movable
probe at PLANE MB
Movable
probe at STATION M7
This file contains a profile of all y locations of the movable
probe
L1PMBY15 = Fixed probe at location 1
Movable
probe at PLANE MB
Movable
probe at y location #15
This file contains a profile of all x locations of the movable
probe
L1SM7Y15 = Fixed probe at location 1
Movable
probe at STATION M7
Movable
probe at y location #15
This file contains a profile of all z locations of the movable
probe
X locations (STATIONS)
Z locations (PLANES)
# in. cm
x+ x/delta #
in. cm z+
z/delta
M8 -0.264 -0.67056 -461.77 -0.1693
MH -0.264 -0.67056 -461.77 -0.1693
M7 -0.139 -0.35306 -243.13 -0.0892
MG -0.139 -0.35306 -243.13 -0.0892
M6 -0.073 -0.18542 -127.69 -0.0468
MF -0.073 -0.18542 -127.69 -0.0468
M5 -0.039 -0.09906 -68.22 -0.0250
ME -0.039 -0.09906 -68.22 -0.0250
M4 -0.020 -0.05080 -34.98 -0.0128
MD -0.020 -0.05080 -34.98 -0.0128
M3 -0.011 -0.02794 -19.24 -0.0071
MC -0.011 -0.02794 -19.24 -0.0071
M2 -0.006 -0.01524 -10.49 -0.0038
MB -0.006 -0.01524 -10.49 -0.0038
M1 -0.003 -0.00762 -5.25 -0.0019
0 0.000 0.00000
0.00 0.0000 A 0.000
0.00000 0.00 0.0000
P1 0.003 0.00762 5.25
0.0019
P2 0.006 0.01524 10.49
0.0038 PB 0.006 0.01524
10.49 0.0038
P3 0.011 0.02794 19.24
0.0071 PC 0.011 0.02794
19.24 0.0071
P4 0.020 0.05080 34.98
0.0128 PD 0.020 0.05080
34.98 0.0128
P5 0.039 0.09906 68.22
0.0250 PE 0.039 0.09906
68.22 0.0250
P6 0.073 0.18542 127.69
0.0468 PF 0.073 0.18542 127.69
0.0468
P7 0.139 0.35306 243.13
0.0892 PG 0.139 0.35306 243.13
0.0892
P8 0.264 0.67056 461.77
0.1693 PH 0.264 0.67056 461.77
0.1693
Y locations
# in. cm
y+ y/delta
1 0.003 0.00720 4.96
0.0018
2 0.004 0.01130 7.78
0.0029
3 0.007 0.01770 12.19
0.0045
4 0.009 0.02220 15.29
0.0056
5 0.011 0.02780 19.14
0.0070
6 0.014 0.03600 24.79
0.0091
7 0.017 0.04370 30.09
0.0110
8 0.022 0.05470 37.67
0.0138
9 0.027 0.06860 47.24
0.0173
10 0.042 0.10760 74.10
0.0272
11 0.066 0.16890 116.31
0.0427
12 0.104 0.26500 182.49
0.0669
13 0.164 0.41590 286.40
0.1050
14 0.265 0.67270 463.24
0.1699
15 0.403 1.02440 705.43
0.2587
Files with extension CC1, CC2, and CC3 were calculated using VVREDUC.BAS.
*.CC1 FILES
col 1 : X (microns)
col 2 : Y (microns)
col 3 : Z (microns)
col 4 : Correlation coefficient
col 5 : Correlation coefficient (conditionally averaged,
v1 > 0, v2 > 0)
col 6 : Correlation coefficient (conditionally averaged,
v1 < 0, v2 < 0)
col 7 : Correlation coefficient (conditionally averaged,
v1 > 0, v2 < 0)
col 8 : Correlation coefficient (conditionally averaged,
v1 < 0, v2 > 0)
*NOTE : THE VALUE IN COL 4 IS THE SUM OF COLS 5,6,7 &
8. THE v1v2 PRODUCT
USED IN EACH OF
COLS 5-8 IS CONDITIONALLY AVERAGED. HOWEVER, THE
v1(RMS) AND v2(RMS)
USED IN THE DENOMINATOR WERE COMPUTED USING ALL
DATA POINTS
col 9 : Sum of v1 squared
col 10 : Sum of v2 squared
col 11 : Sum of v1*v2
col 12 : Number of data points used to compute the sums in cols
9 - 11
col 13 : Sum of v1*v2 (conditionally averaged, v1 > 0, v2 > 0)
col 14 : Number of data points used to compute the sum in col 13
col 15 : Sum of v1*v2 (conditionally averaged, v1 < 0, v2 <
0)
col 16 : Number of data points used to compute the sum in col 15
col 17 : Sum of v1*v2 (conditionally averaged, v1 > 0, v2 <
0)
col 18 : Number of data points used to compute the sum in col 17
col 19 : Sum of v1*v2 (conditionally averaged, v1 < 0, v2 >
0)
col 20 : Number of data points used to compute the sum in col 19
*.CC2 FILES
col 1 : X (microns)
col 2 : Y (microns)
col 3 : Z (microns)
col 4 : Correlation coefficient
col 5 : Correlation coefficient (conditionally averaged,
v1 > 0, v2 > 0)
col 6 : Correlation coefficient (conditionally averaged,
v1 < 0, v2 < 0)
col 7 : Correlation coefficient (conditionally averaged,
v1 > 0, v2 < 0)
col 8 : Correlation coefficient (conditionally averaged,
v1 < 0, v2 > 0)
col 9 : Sum of v1 squared (conditionally averaged, v1 > 0,
v2 > 0)
col 10 : Sum of v2 squared (conditionally averaged, v1 > 0, v2
> 0)
col 11 : Sum of v1*v2 (conditionally averaged, v1 > 0, v2 > 0)
col 12 : Number of data points used to compute the sums in cols
9 - 11
col 13 : Sum of v1 squared (conditionally averaged, v1 < 0,
v2 < 0)
col 14 : Sum of v2 squared (conditionally averaged, v1 < 0,
v2 < 0)
col 15 : Sum of v1*v2 (conditionally averaged, v1 < 0, v2 <
0)
col 16 : Number of data points used to compute the sums in cols
13 - 15
col 17 : Sum of v1 squared (conditionally averaged, v1 > 0, v2
< 0)
col 18 : Sum of v2 squared (conditionally averaged, v1 > 0, v2
< 0)
col 19 : Sum of v1*v2 (conditionally averaged, v1 > 0, v2 <
0)
col 20 : Number of data points used to compute the sums in cols
17 - 19
col 21 : Sum of v1 squared (conditionally averaged, v1 < 0,
v2 > 0)
col 22 : Sum of v2 squared (conditionally averaged, v1 < 0,
v2 > 0)
col 23 : Sum of v1*v2 (conditionally averaged, v1 < 0, v2 >
0)
col 24 : Number of data points used to compute the sums in cols
21 - 23
*.CC3 FILES
col 1 : X (microns)
col 2 : Y (microns)
col 3 : Z (microns)
col 4 : Correlation coefficient
col 5 : Correlation coefficient (conditionally averaged,
v1 > 0)
col 6 : Correlation coefficient (conditionally averaged,
v1 < 0)
col 7 : Correlation coefficient (conditionally averaged,
v2 > 0)
col 8 : Correlation coefficient (conditionally averaged,
v2 < 0)
col 9 : Sum of v1 squared (conditionally averaged, v1 > 0)
col 10 : Sum of v2 squared (conditionally averaged, v1 > 0)
col 11 : Sum of v1*v2 (conditionally averaged, v1 > 0)
col 12 : Number of data points used to compute the sums in cols
9 - 11
col 13 : Sum of v1 squared (conditionally averaged, v1 < 0)
col 14 : Sum of v2 squared (conditionally averaged, v1 < 0)
col 15 : Sum of v1*v2 (conditionally averaged, v1 < 0)
col 16 : Number of data points used to compute the sums in cols
13 - 15
col 17 : Sum of v1 squared (conditionally averaged, v2 > 0)
col 18 : Sum of v2 squared (conditionally averaged, v2 > 0)
col 19 : Sum of v1*v2 (conditionally averaged, v2 > 0)
col 20 : Number of data points used to compute the sums in cols
17 - 19
col 21 : Sum of v1 squared (conditionally averaged, v2 < 0)
col 22 : Sum of v2 squared (conditionally averaged, v2 < 0)
col 23 : Sum of v1*v2 (conditionally averaged, v2 < 0)
col 24 : Number of data points used to compute the sums in cols
21 - 23
Files with extension CC4 were computed using TRIPLE.BAS
col 1 : X (microns)
col 2 : Y (microns)
col 3 : Z (microns)
col 4 : v1 Root Mean Square (RMS)
col 5 : v2 Root Mean Square (RMS)
col 6 : v1(squared)*v2 triple product
col 7 : v1*v2(squared) triple product
col 8 : v1(squared)*v2 triple product correlation coefficient
= (col6) / ((col4^2)*(col5))
col 9 : v1*v2(squared) triple product correlation coefficient
= (col7) / ((col4)*(col5^2))