Research Summary
Dr. O'Connor focuses on issues of reacting flows for energy and propulsion applications. High-speed laser diagnostics and other state-of-the-art experimental techniques are used in research areas such as combustion, alternative fuels, hydrodynamic instability, and thermoacoustics.
In the News
Research Keywords
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Projects
Recent Publications
Effect of Inert Species on the Static and Dynamic Stability of a Piloted, Swirl-Stabilized Flame
Camacho, J. R., Akiki, M., Blust, J. & O'Connor, J., Jun 1 2024, In: Journal of Engineering for Gas Turbines and Power. 146, 6, 061021.Research output: Contribution to journal › Article › peer-review
Impact of turbulence on flame brush development of acoustically excited rod-stabilized flames
Karmarkar, A. & O'Connor, J., Jan 2023, In: Proceedings of the Combustion Institute. 39, 2, p. 2139-2148 10 p.Research output: Contribution to journal › Article › peer-review
Interaction between coherent and turbulent oscillations in non-reacting and reacting wake flows
Karmarkar, A. & O'Connor, J., May 16 2023, In: Journal of Fluid Mechanics. 963, A13.Research output: Contribution to journal › Article › peer-review
Pairing combustion experiments and thermogravimetric analysis to uncover timescales controlling cellulose ignition and burnout in a Hencken burner
Motiei, P., Pecchi, M., Adair, J. L., Goldfarb, J. L. & O'Connor, J., Dec 2023, In: Combustion and Flame. 258, 113092.Research output: Contribution to journal › Article › peer-review
Understanding the role of flow dynamics in thermoacoustic combustion instability
O'Connor, J., Jan 2023, In: Proceedings of the Combustion Institute. 39, 4, p. 4583-4610 28 p.Research output: Contribution to journal › Article › peer-review
Data-driven Detection and Early Prediction of Thermoacoustic Instability in a Multi-nozzle Combustor
Bhattacharya, C., O’Connor, J. & Ray, A., 2022, In: Combustion science and technology. 194, 7, p. 1481-1512 32 p.Research output: Contribution to journal › Article › peer-review
Linear control of thermoacoustic oscillations with flame dynamics modeled by a level-set method
Chen, X., Hemchandra, S., Fathy, H. & O'Connor, J., Mar 2022, In: Combustion and Flame. 237, 111686.Research output: Contribution to journal › Article › peer-review
Optimizing Thermoacoustic Characterization Experiments for Identifiability Improves Both Parameter Estimation Accuracy and Closed-Loop Controller Robustness Guarantees
Chen, X., O’Connor, J. & Fathy, H., 2022, In: Combustion science and technology. 194, 11, p. 2186-2211 26 p.Research output: Contribution to journal › Article › peer-review
Reflecting while doing: Integrating active learning and metacognitive activities in a fully online thermodynamics course
Gregg, A. & O'connor, J., Aug 23 2022, In: ASEE Annual Conference and Exposition, Conference Proceedings.Research output: Contribution to journal › Conference article › peer-review
Impact of precessing vortex core dynamics on the thermoacoustic instabilities in a swirl-stabilized combustor
Karmarkar, A., Gupta, S., Boxx, I., Hemchandra, S. & O'Connor, J., Sep 10 2022, In: Journal of Fluid Mechanics. 946, A36.Research output: Contribution to journal › Article › peer-review
Relative Effects of Velocity- And Mixture-Coupling in a Thermoacoustically Unstable, Partially Premixed Flame
Karmarkar, A., Boxx, I. & O'Connor, J., Jan 1 2022, In: Journal of Engineering for Gas Turbines and Power. 144, 1, p. 1ENG 011003.Research output: Contribution to journal › Article › peer-review
Describing the Mechanism of Instability Suppression Using a Central Pilot Flame With Coupled Experiments and Simulations
Li, J., Kwon, H., Seksinsky, D., Doleiden, D., O’Connor, J., Xuan, Y., Akiki, M. & Blust, J., Jul 2022, In: Journal of Engineering for Gas Turbines and Power. 144, 1, 011015.Research output: Contribution to journal › Article › peer-review
Heat Release Rate Estimation Using Multiple Non-Minimum Phase Sensor Measurements in a One-dimensional Combustor
Chen, X., O’Connor, J. & Fathy, H., Nov 1 2021, In: IFAC-PapersOnLine. 54, 20, p. 723-728 6 p.Research output: Contribution to journal › Conference article › peer-review
The effect of the degree of premixedness on self-excited combustion instability
Howie, A., Doleiden, D., Peluso, S. & O'Connor, J., Jul 2021, In: Journal of Engineering for Gas Turbines and Power. 143, 7, 071024.Research output: Contribution to journal › Article › peer-review
Impact of turbulence on the coherent flame dynamics in a bluff-body stabilized flame
Karmarkar, A., Tyagi, A., Hemchandra, S. & O'Connor, J., Jan 2021, In: Proceedings of the Combustion Institute. 38, 2, p. 3067-3075 9 p.Research output: Contribution to journal › Article › peer-review