Publications

Combustion Instability

Samarasinghe, J., Culler, W., Quay, B., Santavicca, D. A., O’Connor, J. (2017) “The effect of fuel staging on the structure and instability characteristics of swirl-stabilized flames in a lean premixed multi-nozzle can combustor.” Journal of Engineering for Gas Turbines and Power, 139(12), 121504.

Culler, W., Samarasinghe, J., Quay, B., Santavicca, D. A., O’Connor, J. (2017) “The effect of transient fuel staging on self-excited instabilities in a multi-nozzle model gas turbine combustor,” ASME Turbo Expo, Charlotte, NC

O’Connor, J., S. Hemchandra, T. Lieuwen, “Combustion Instabilities in Lean Premixed Systems.” Ed. D. Dunn-Rankin and P. Therkelsen, Lean Combustion: Technology and Control, Second Edition.

O’Connor, J., V. Acharya, T. Lieuwen, (2015) “Transverse Combustion Instabilities: Acoustic, Fluid Mechanic, and Flame Processes,” Progress in Energy and Combustion Science, 49, p. 1-39

Turbulent Flames

Culler, W., A. Tyagi, P. Venkateswararn, J. O’Connor, (2016). “Comparison of Three Interacting V-Flames to a Single Bluff Body Flame at Two Reynolds Numbers,” 2016 AIAA SciTech. San Diego, CA

Culler, W., J. Crane, R. J. Samarasinghe, M. Meehan, J. O’Connor, (2015) “Effect of Flame Spacing and Flow Velocity on the Dynamics of Three Interacting V-Flames,” in 9th U.S. National Combustion Meeting, Cincinnati, OH

Unsteady Flows

Frederick, M., Manoharan, K., Dudash, J., Brubaker, B., Hemchandra, S. & O’Connor, J., (2017) “Impact of PVC Dynamics on Shear Layer Response in a Swirling Jet,” Journal of Engineering for Gas Turbines and Power, in press

O’Connor, J. (2017) “Disturbance Field Decomposition in a Transversely Forced Swirl Flow and Flame.” Journal of Propulsion and Power, 33(3), p. 750-763.

Mathews, B., S. Hansford, J. O’Connor, (2016) “Impact of Swirling Flow Structure on Shear Layer Vorticity Fluctuation Mechanisms,” ASME Turbo Expo, Seoul, South Korea

O’Connor, J. (2015) “Visualization of Shear Layer Dynamics in a Transversely Forced Flow and FlameAIAA Journal of Propulsion and Power, 32(4), p. 1127-1136

Hansford, S., K. Manoharan, S. Hemchandra, J. O’Connor, (2015) “Impact of flow non-axisymmetry on swirling flow dynamics and receptivity to acoustics,” in ASME Turbo Expo, Montreal, Canada.

Manoharan, K., S. Hansford, J. O’Connor, S. Hemchandra, (2015) “Instability mechanism in a swirl flow combustor: Precession of vortex core and influence of density gradient,” in ASME Turbo Expo, Montreal, Canada

Combustor Emissions

Makwana, A., Iyer, S., Linevsky, M., Santoro, R., Litzinger, T., O’Connor, J. (2017) “Effects of fuel volatility on emissions in a jet flame and a model gas turbine combustor,” Journal of Engineering for Gas Turbines and Power, in press

Wang, Y., Makwana, A., Iyer, S., Linevsky, M., Santoro, R., Litzinger, T., O’Connor, J., “Effect of fuel Composition on Soot and Aromatic Species Distribution in Laminar, Co-Flow Flames, Part 1: non-Premixed FuelCombustion and Flame, in press

Makwana, A., Wang, Y., Iyer, S., Linevsky, M., Santoro, R., Litzinger, T., O’Connor, J., “Effect of fuel Composition on Soot and Aromatic Species Distribution in Laminar, Co-Flow Flames, Part 2: Partially-Premixed FuelCombustion and Flame, in press

Makwana, A., Iyer, S., Linevsky, M., Santoro, R., Litzinger, T., O’Connor, J. (2017) “Effect of aromatic fuels on aromatic species and soot distributions in laminar, co-flow, non-premixed flames at atmospheric pressure,” 10thS. National Combustion Meeting, College Park, MD

Makwana, A., A. Jain, M. Linevsky, S. Iyer, R. Santoro, T. Litzinger, Y. Xuan, J. O’Connor, (2016) “Effects of fuel structure on soot precursors in a laminar co-flow flame,” Meeting of the Eastern States Section of the Combustion Institute, Princeton, NJ

Makwana, A., Y. Wang, M. Linevsky, S. Iyer, R. Santoro, T. Litzinger, J. O’Connor, (2015) “Capturing Soot Formation with the Use of Iso-Octane as a Surrogate for Fischer-Tropsche Fuel,” in 9th U.S. National Combustion Meeting, Cincinnati, OH

Hot Section Durability

Leonetti, M., Lynch, S., O’Connor, J., Bradshaw, S. (2017) “Combustor Dilution Hole Placement and Its Effect on the Turbine Inlet Flowfield.” Journal of Propulsion and Power, 33(3), p. 764-775.

Diesel Fuel Injection

O’Connor, J., Borz, M., Han, J., Paul, C., Ruth, D., Imren, A., Haworth, D., Martin, J., Sun, C., Boehman, A., Heffelfinger, K., Li, J., McLaughlin, S., Morton, R., Karlsson, A., Andersson, A. (2017) “Optimization of an advanced combustion strategy towards 55% BTE for the Volvo SuperTruck program.” SAE International Journal of Engines, 10(3)

Hessel, R., Yue, Z., Reitz, R., Musculus, M., O’Connor, J. (2017) “Guidelines for Interpreting Soot Luminosity Imaging“, SAE International Journal of Engines, 10(3)

Ruth, D., J. O’Connor, (2017) “Development and Verification of Reduced-Order Model for Diesel Spray Penetration and Spreading during Wall Impingement,” SAE Congress, Detroit, MI. SAE Technical Paper 2017-01-0814

O’Connor, J., M. Musculus, L. Pickett, (2016) “Effect of post injections on mixture preparation and unburned hydrocarbon emissions in a heavy-duty diesel engine,” Combustion and Flame, 170, p. 111-123

Borz, M., Y. Kim, J. O’Connor, (2016) “The Effect of Injection Timing and Duration on Jet Penetration and Mixing in Multiple Injection Schedules 2016 SAE Congress, Detroit, MI

O’Connor, J. (2016) “Use of advanced fuel injection strategies for emissions reduction in diesel engines,” Meeting of the Eastern States Section of the Combustion Institute, Princeton, NJ

Hessel, R., Yue, Z., Reitz, R., Musculus, M., & O’Connor, J. (2015). “Applying Advanced CFD Analysis Tools to Study Differences between Start-of-Main and Start-of-Post Injection Flow, Temperature and Chemistry Fields Due to Combustion of Main-Injected Fuel.” SAE International Journal of Engines, 8(5), p. 2159-2176.

O’Connor, J. and M. Musculus, (2014) “Effect of Load on Close-Coupled Post-Injection Efficacy for Soot Reduction in an Optical, Heavy-Duty Diesel Research Engine,” Journal of Engineering for Gas Turbines and Power, 136(10), p. 101508

O’Connor, J. and M. Musculus, (2014) “In-Cylinder Mechanisms of Soot Reduction by Close-Coupled Post-Injections as Revealed by Imaging of Soot Luminosity and Planar Laser-Induced Soot Incandescence in a Heavy-Duty Diesel Engine,” SAE Int. J. Engines, 7(2), p. 673-693

Hessel, R., R. Reitz, M. Musculus, J. O’Connor, and D. Flowers, (2014) “A CFD Study of Post Injection Influences on Soot Formation and Oxidation under Diesel-Like Operating Conditions,” SAE Int. J. Engines, 7(2), p. 694-713

O’Connor, J. and M. Musculus, (2014) “Effects of exhaust gas recirculation and load on soot in a heavy-duty optical diesel engine with close-coupled post injections for high-efficiency combustion phasing,” International Journal of Engine Research, 14(4), p. 421-443