A study of the turbulence generated behind a perforated plate in a wind tunnel.
Bibliographic record
Abstract
Conventionally, grids composed of bars or stripes have been used to a great extent in the experimental studies of isotropic turbulence. Perforated plates are utilized instead of grids in the present study. A perforated plate was placed at the entrance of the test section of a wind tunnel. The turbulent flow downstream of the plate was measured using a constant temperature hot-wire anemometer in conjunction with a single normal and a single inclined hot-wire. Measurements were conducted for nine different operating conditions which consisted of planes at three downstream distances and three flow rates. Each plane contained eighty-one measuring locations. At each location, three measurements were taken, one with the single normal hot-wire probe, the other two with the single inclined hot-wire probe. Nine different plates were tested. The total number of measurements was 19,683. The signal from single normal hot-wire probe was processed to obtain the turbulence root mean square (rms) velocity in the streamwise direction, u '. The turbulence integral length scale based on the Taylor's frozen turbulence hypothesis was obtained from the signal of single normal probe. The turbulence rms velocity in the lateral direction, v ', was obtained by combining u' with the processed result from the single inclined probe. (Abstract shortened by UMI.)Dept. of Mechanical, Automotive, and Materials Engineering. Paper copy at Leddy Library: Theses & Major Papers - Basement, West Bldg. / Call Number: Thesis2002 .L57. Source: Masters Abstracts International, Volume: 41-04, page: 1181. Advisers: David S-K. Ting; Gary W. Rankin. Thesis (M.A.Sc.)--University of Windsor (Canada), 2002.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".