Numerical Study of the Fluid Dynamics of a Micro Pillar Immersed in a Laminar Boundary Layer
Bibliographic record
Abstract
The study investigates the flow development in the vicinity and wake of a micro pillar mounted on a surface immersed in the inner region of a laminar boundary layer.The investigation is based on the numerical solution of the Navier Stokes equations for incompressible conditions.It is demonstrated that the significant wall-normal gradient of streamwise velocity of the cross flow spanning the height of the micro pillar results in suppression of time-periodic shedding of vorticity from the side surfaces of the micro pillar, resulting in a steady wake flow.A pair of streamwise-oriented tip vortices and a corresponding pair of base vortices are observed to dominate the wake development.The sources of vorticity for these vortices and their relation to the vorticity in the recirculation zone immediately downstream of the micro pillar are identified.This improved understanding of flow physics is intended to inform future studies of passive control of boundary layers.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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".