Influence of dynamic change of radial clearance on flow and thermal characteristics of full ceramic angular contact ball bearing
Bibliographic record
Abstract
This paper aims to investigate the change in radial clearance. The study focuses on the influence of this change on the internal flow distribution and thermal characteristics of full ceramic angular contact ball bearing under oil–gas two-phase flow lubrication. Using elastic theory to compute changes in radial clearance due to elastic deformation, centrifugal displacement, and thermal expansion. A theoretical model calculating the inner ring displacement and radial clearance values was established. Next, a numerical analysis model, based in two-phase flow lubrication theory, was used to analyze the flow field characteristics. Fluid–structure interaction techniques were used to assess the changing effects of radial clearance changes on the flow field and thermal behaviors within the bearing cavity. The accuracy of the simulation was verified by a bearing temperature rise test. The results indicate that the oil phase, primarily affected by centrifugal forces, tends to concentrate around the outer ring of the bearing. As the interference fit increases, the radial clearance diminishes, resulting in a lower oil phase volume fraction. A decrease in bearing temperature rise was observed with radial clearance increasing, showing that a larger radial clearance can mitigate the heat generated within the bearing.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| 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 teacher head, 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".