These data files are from the mixing layer experiment conducted at Turbulence Research Lab in year 2000.
There are 15 data files, corresponding to 15 cross-stream (y) locations of the mixing layer. These files are in human readable ASCII format. They are compressed to save disk space. Please use 'Winzip' under Windows or 'gunzip' under Unix to decompress these files before any post-processing work.
| file name | y |
| 001 | 12 |
| 004 | 83 |
| 007 | 155 |
| 010 | 226 |
| 013 | 298 |
| 016 | 369 |
| 019 | 440 |
| 022 | 512 |
| 025 | 582 |
| 028 | 655 |
| 031 | 727 |
| 034 | 799 |
| 037 | 870 |
| 040 | 942 |
| 043 | 1013 |
The unit of those numbers in y column is in pixel size. To convert them into mm, multiply each number by 0.2247.
In each data file, the length of data is 180 seconds, and the data was sampled at 1000 Hz. So there are 180,000 data points in each file. Following is the data of one arbitrary data point.
420 1.96630 1.688273E-02 -5.818631E-03
420 1.95765 4.559826E-03 -1.263111E-02
420 1.97313 2.661218E-02 2.396109E-03
420 1.96812 1.947618E-02 -7.220891E-03
420 -11.1864 3.55244 -15.9348 5.06099 -8.80924 6.82057 1
420 is just an index. The 1st line contains 3 velocity components (U, V and W). Please neglect the 2nd, 3rd and 4th lines. The 5th line contains six velocity gradient components. They are du/dy, du/dz, dv/dy, dv/dz, dw/dy and dw/dz, respectively. The last integer number is an error code (1=good 0=bad). Post-processing program should read this code and discard bad points.
This page is created and maintained by Ning Li. Last modified on 12/31/2002.