Design of an optically accessible single cup sector of a full-scale annular gas turbine combustor
Bibliographic record
Abstract
View Video Presentation: https://doi.org/10.2514/6.2023-1062.vid This paper summarizes the design and development of a unique optically accessible sector of a full-scale annular gas turbine combustor. The distinctive feature of the experimental setup is that it preserves the geometrical details of an annular combustor that includes the casing, dome and combustor liner. The combustor design features a series of primary and secondary dilution holes with multiple film cooling strips on outer and inner liner. The details of the facility requirements and instrumentation and controls are provided in the paper. The methodology employed in the design of the optically accessible combustion chamber is elucidated, including quartz window considerations and thermal management of the experimental hardware under extremely high heat loads. The goal is to obtain the evolution of global parameters such as spray patternation, pattern factor, pressure drop and combustion efficiency through measurement of the local flow-flame interactions using advanced optical diagnostics. Rig contains multiple ports for measurements of temperature and pressure. For current isothermal study, simultaneous pressure and mass flow rate data of the rig is acquired during PIV measurements to ensure the state of the system. 2D two component PIV experiments are conducted to measure the velocity inside the combustor under isothermal conditions. Experiments are conducted at 0.1, 0.3 and 0.5 kg/s of inlet flow rate and time averaged flow structures inside the combustor are reported. The major structure of flow such as central recirculation zone (CRZ) and swirl jet deflection angle for the respective cases are elucidated here.
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 | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 0.001 |
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".