Publications

Book:

R. I. Sujith & S. A. Pawar, "Thermoacoustic Instability: A Complex Systems Perspective", Publisher: Springer Nature, 2021.

Book Chapters:

1. S. A. Pawar & R. I. Sujith, chapter title "Intermittency: a state that precedes thermoacoustic instability" in the book on "Droplets and Sprays: Applications for Combustion and Propulsion", Editors: S. Basu, A. K. Agarwal, A. Mukhopadhyay, & C. Patel, Publisher: Springer, 2017.

2.  S. Mondal, S. A. Pawar & R. I. Sujith, chapter title "Synchronization transition in a thermoacoustic system: Temporal and spatiotemporal analysis" in the book on "Energy for Propulsion - A Sustainable Technologies Approach", Editors: A. Runchal, A. Gupta, A. Kushari, A. De, & S. Aggarwal, Publisher: Springer, 2018.

Patent:

R. I. Sujith, K. Manoj, S. A. Pawar, A. Krishnan, P. R. Midhun, K. V. Reeja, R. Manikandan, Roy A. (2021) "System and method for optimizing passive control of thermoacoustic instabilities in turbulent combustors", US Patent App. No. 17061298.

Journals:

1. A. Sahay, A. Kushwaha, S. A. Pawar, P. R. Midhun, J. M. Dhadphale & R. I. Sujith (2023) "Mitigation of limit cycle oscillations in a turbulent thermoacoustic system via delayed acoustic self-feedback", Chaos, 33, 043118. 

2. S. Srikanth, A. Sahay, S. A. Pawar, K. Manoj & R. I. Sujith (2022) "Self-coupling: an effective method to mitigate thermoacoustic instability", Nonlinear Dyn. 110, 2247–2261. 

3. K. Manoj, S. A. Pawar, J. Kurths, R. I. Sujith (2022) "Rijke tube: A nonlinear oscillator", Chaos, 32, 072101. (Featured Article)

4. S. Srikanth, S. A. Pawar, K. Manoj & R. I. Sujith (2022) "Dynamical states and bifurcations in coupled thermoacoustic oscillators", Chaos, 32, 073129. 

5. A. Ghosh, S. A. Pawar & R. I. Sujith (2022) "Anticipating synchrony in dynamical systems using information theory", Chaos, 32(3), 031103.

6. P. Kasthuri, S. A. Pawar, R. Gejji, W. Anderson & R. I. Sujith (2021) "Coupled interaction between acoustic pressure and heat release rate fluctuations in a self-excited multi-element rocket combustor", Combust. Flame, 240, 12047.

7. A. Kushwaha, P. Kasthuri, S. A. Pawar, R. I. Sujith, I. Chterev I. Boxx, (2021) "Dynamical characterization of thermoacoustic oscillations in a hydrogen-enriched partially premixed swirl-stabilized methane/air combustor", J. Eng. Gas Turbine Power, 143(12), 121022.

8. D. Premraj, K. Suresh, S. A. Pawar, L. Kabiraj, A. Prasad & R. I. Sujith (2021) "Dragon-king extreme events as precursors for catastrophic transition", Europhys. Lett. 134 (3), 34006.

9. A. Sahay, A. Roy, S. A. Pawar & R. I. Sujith (2021) "Dynamics of coupled thermoacoustic oscillators under asymmetric forcing", Phys. Rev. Appl., 15(4), 044011.

10. S. A. Pawar, R. Manikandan, K. V. Reeja, P. R. Midhun & R. I. Sujith (2021) "Effect of preheating of the reactants on the transition to thermoacoustic instability in a bluff-body stabilized dump combustor", Proc. Combust. Inst., 38(4), 6193-6201.

11. K. Manoj, S. A. Pawar & R. I. Sujith (2021) "Experimental investigation on the susceptibility of minimal networks to a change in topology and number of oscillators", Phys. Rev. E, 103, 022207.

12. D. Premraj, K. Manoj, S. A. Pawar & R. I. Sujith (2021) "Effect of amplitude and frequency of limit cycle oscillators on their coupled and forced dynamics", Nonlinear Dyn., 103(2), 1439-1452.

13. S. Tandon, S. A. Pawar, S. Banerjee, A. J. Varghese, D. Premraj & R. I. Sujith (2020) "Bursting during intermittency route to thermoacoustic instability: Effects of slow-fast dynamics and turbulence", Chaos, 30, 103112. (Featured Article & Journal Cover Page)

14. P. Kasthuri, I. Pavithran, A. Krishnan, S. A. Pawar, R. I. Sujith, R. Gejji, W. Anderson, N. Marwan & J. Kurths (2020) "Recurrence analysis of slow-fast systems", Chaos, 30, 063152.

15. A. Roy, S. Mondal, S. A. Pawar & R. I. Sujith (2020) "Open-loop control of thermoacoustic instability in a laminar ducted flame through inlet harmonic velocity perturbation", J. Fluid Mech., 884, 1-32.

16. D. Premraj, S. A. Pawar, L. Kabiraj & R. I. Sujith (2020) "Strange nonchaos in self-excited singing flames", Europhys. Lett., 128(5), 54005.

17. K. Manoj, S. A. Pawar, S. Dange, S. Mondal, R. I. Sujith, E. Surovyatkina & J. Kurths (2019) "Synchronization route to weak chimera in four candle-flame oscillators", Phys. Rev. E, 100(6), 062204.

18. P. Kasthuri, I. Pavithran, S. A. Pawar, R. I. Sujith, R. Gejji & W. Anderson (2019) "Dynamical transitions in a liquid rocket combustor", Chaos, 29, 103115. (Editor's Pick)

19. S. Dange, K. Manoj, S. Banerjee, S. A. Pawar, S. Mondal & R. I. Sujith (2019) "Oscillation quenching and phase-flip bifurcation in coupled thermoacoustic systems" Chaos, 29, 093135.

20. S. Dange, S. A. Pawar, K. Manoj & R. I. Sujith (2019) "Role of buoyancy-driven vortices in inducing different modes of coupled behaviour in candle-flame oscillators", AIP Adv., 9(1), 015119.

21. S. A. Pawar, M. V. Panchagnula & R. I. Sujith (2019) "Phase synchronization and collective interaction of multiple flamelets in a laboratory scale spray combustor", Proc. Combust. Inst., 37, 5121-5128.

22. S. Mondal, S. A. Pawar & R. I. Sujith (2019) "Forced synchronization and asynchronous quenching of periodic oscillations in a thermoacoustic system", J. Fluid Mech., 864, 73-96.

23. S. A. Pawar, S. Mondal, N. B. George & R. I. Sujith (2019) "Temporal and spatiotemporal analysis of synchronization transition in a swirl-stabilized combustor", AIAA J., 57(2), 836-847.

24. V. Godavarthi, S. A. Pawar, V. R. Unni, R. I. Sujith, N. Marwan & J. Kurths (2018) "Coupled interaction between unsteady flame and acoustic field in a turbulent combustor", Chaos, 28(11), 113111.

25. S. A. Pawar & R. I. Sujith (2018) "Transition to thermoacoustic instability in a turbulent combustor", J. Combust. Soc. Japan, 60 (192), 99-111.

26. N. Thomas, S. Mondal, S. A. Pawar & R. I. Sujith (2018) "Effect of noise on the dynamics of coupled thermoacoustic oscillators", Chaos, 28, 093226.

27. K. Manoj, S. A. Pawar & R. I. Sujith (2018) "Experimental evidence of amplitude death and phase-flip bifurcation between in-phase and anti-phase synchronization", Sci. Rep., 8, 11626.

28. N. Thomas, S. Mondal, S. A. Pawar & R. I. Sujith (2018) "Effect of time-delay and dissipative coupling on amplitude death in coupled thermoacoustic oscillators", Chaos, 28, 033119. (Featured Article & Scilight)

29. S. A. Pawar, R. I. Sujith, Benjamin Emerson & Tim Lieuwen (2018) "Characterization of forced response of density stratified reacting wake", Chaos, 28(2), 023108.

30. S. Mondal, S. A. Pawar & R. I. Sujith (2017) "Synchronous behavior of two interacting oscillating systems undergoing quasiperiodic route to chaos", Chaos, 27, 103119.

31. S. A. Pawar, A. Seshadri, V. R. Unni & R. I. Sujith (2017) "Thermoacoustic instability as mutual synchronization between the acoustic field of the confinement and turbulent reactive flow", J. Fluid Mech., 827, 664-693.

32. S. A. Pawar, R. Vishnu, M. Vadivukkarasan, M. V. Panchagnula & R. I. Sujith (2016) "Intermittency route to combustion instability in a laboratory spray combustor", J. Eng. Gas Turbine Power, 138(4),041505.

Conferences:

1. S. Srikanth, A. Sahay, S. A. Pawar, K. Manoj, & R. I. Sujith, “Oscillation Quenching through Self-Coupling: Experiments and Modeling”. 13th Conference on Nonlinear Systems and Dynamics, 17th to 22nd December 2021, Thanjavur, India, Virtual.

2. S. A. Pawar, R. Manikandan, K. V. Reeja, P. R. Midhun & R. I. Sujith, “Effect of preheating of the reactants on the transition to thermoacoustic instability in a bluff-body stabilized dump combustor”, 38th International Symposium on Combustion, 24th to 29th January 2021, Adelaide, Australia, Virtual.

3. A. Kushwaha, P. Kasthuri, S. A. Pawar, R. I. Sujith, I. Chterev & I. Boxx, “Dynamical characterization of thermoacoustic oscillations in a hydrogen-enriched partially premixed swirl-stabilized methane/air combustor”, Proceedings of the ASME Turbo Expo 2021, 7th to 11th June 2021, Virtual.

4. A. Sahay, A. Roy, S. A. Pawar & R. I. Sujith, “Coupled behavior of oscillators under asymmetric forcing”, Dynamics Days Europe 2021, 23rd to 27th August 2021, Nice, France, Virtual.

5. S. Srikanth, S. A. Pawar, K. Manoj & R. I. Sujith, “Suppression of thermoacoustic oscillations through self-coupling”, Conference on Complex Systems 2021, 25th to 29th October, 2021, Lyon, France, Virtual.

6. S. Srikanth, S. A. Pawar, K. Manoj & R. I. Sujith, “Modelling coupled thermoacoustic systems: synchronization and amplitude death”, 74th Annual Meeting of the APS Division of Fluid Dynamics, 21st to 23rd November, 2021, Phoenix, Arizona, USA.

7. K. Manoj, S. A. Pawar & R. I. Sujith, “Dynamics of minimal networks”, 74th Annual Meeting of the APS Division of Fluid Dynamics, 21st to 23rd November, 2021, Phoenix, Arizona, USA.

8. S. A. Pawar, "Synchronization: a novel framework to study coupled interactions in the thermoacoustic system", IV International Conference on Sustainable Energy Environmental Challenges, 27th to 29th November 2019, CSIR-NEERI, Nagpur.

9. D. Premraj, S. A. Pawar, L. Kabiraj R. I. Sujith, "Experimental evidence of strange nonchaos in a self-excited thermoacoustic system", Conference on Nonlinear Systems Dynamics (CNSD-19), 12th to 15th December 2019, IIT Kanpur, India.

10. A. Roy, S. A. Pawar, S. Mondal R. I. Sujith, "Open-loop control of thermoacoustic instability in a laminar combustor: forced synchronization and physical mechanism", Conference on Nonlinear Systems Dynamics (CNSD-19), 12th to 15th December 2019, IIT Kanpur, India.

11. K. Manoj, S. Banerjee, S. A. Pawar, S. Dange, S. Mondal R. I. Sujith, "Amplitude death: a new approach to quench thermoacoustic oscillations in coupled systems", Conference on Nonlinear Systems Dynamics (CNSD-19), 12th to 15th December 2019, IIT Kanpur, India.

12. S. A. Pawar, S. Tandon, S. Banerjee, A. J. Varghese, D. Premraj R. I. Sujith, "Bursts: a result of slow-fast dynamics in thermoacoustic systems", Conference on Nonlinear Systems Dynamics (CNSD-19), 12th to 15th December 2019, IIT Kanpur, India.

13. I. Pavithran, P. Kasthuri, A. Krishnan, S. A. Pawar, R. I. Sujith, R. Gejji, W. Anderson, N. Marwan J. Kurths, "Recurrence networks of spiky signals", 8th International Symposium on Recurrence Plots, 21st to 23rd August 2019, Zhenjiang, China.

14. A. Roy, S. Mondal, S. A. Pawar, R. I. Sujith, "On the mechanism of open-loop control of thermoacoustic instability in a laminar premixed combustor", Workshop on Data Analysis and Machine Learning, 24th to 28th May 2019, IISER Tirupati, India.

15. V. Godavarthi, S. A. Pawar, V. R. Unni, R. I. Sujith, N. Marwan J. Kurths, "Analyzing Synchronization Transition to Thermoacoustic Instability using Recurrences in Phase Space", Conference on Nonlinear Systems and Dynamics (CNSD-18), 11th to 14th October 2019, JNU, New Delhi, India.

16. S. A. Pawar, M. V. Panchagnula R. I. Sujith, "Phase synchronization and collective interaction of multiple flamelets in a laboratory scale spray combustor", 37th International Symposium on Combustion, 29th July to 3rd August 2018, Dublin, Ireland.

17. S. A. Pawar, S. Mondal, N. B. George R I Sujith, "Synchronization behaviour during the dynamical transition in swirl-stabilized combustor: temporal and spatiotemporal analysis", AIAA SciTech Forum, 8th to 12th January 2018, Kissimmee, Florida, USA.

18. S. Mondal, S. A. Pawar, R. I. Sujith, "Forced synchronization and asynchronous quenching in a thermo- acoustic system", 70th Annual Meeting of the APS Division of Fluid Dynamics, 19th to 21st November 2017, Denver, Colorado, USA.

19. N. Thomas, S. Mondal, S. A. Pawar, R. I. Sujith, "Amplitude death behaviour of coupled thermoacoustic oscillators", 70th Annual Meeting of the APS Division of Fluid Dynamics, 19th to 21st November 2017, Denver, Colorado, USA.

20. K. Manoj, S. A. Pawar, R. I. Sujith, "Experimental evidence of amplitude death in coupled candle flame oscillators", 70th Annual Meeting of the APS Division of Fluid Dynamics, 19th to 21st November 2017, Denver, Colorado, USA.

21. S. A. Pawar, A. Seshadri, V. R. Unni R. I. Sujith, "Mutual synchronization of coupled oscillators of a thermoacoustic system", Conference on Nonlinear Systems and Dynamics (CNSD-16), 16th to 18th December 2016, IISER, Kolkata, India.

22. N. Mukherjee, M. A. Heckl, A. Bigongiari, S. A. Pawar, R. Vishnu R. I. Sujith, "Nonlinear dynamics of a laminar V- flame in a combustor", The 22nd International Congress on Sound and Vibration (ICSV 22), 12th to 16th July 2015, Florence, Italy.

23. S. A. Pawar, R. V., M. Vadivukkarasan, M. V. Panchagnula R. I. Sujith, "Intermittency route to combustion instability in a laboratory spray combustor", Proceedings of the ASME Turbo Expo 2015, 15th to 19th June 2015, Montreal, Canada.

Workshop & Schools:

1. Invited speaker to conduct a hands-on session on "Analyzing data from thermoacoustic systems" at a workshop on Data Analysis and Machine Learning, 24th to 28th May 2019, IISER Tirupati, India.

2. Participated in "School and Workshop on Patterns of Synchrony: Chimera States and Beyond (smr 3286)" and presented work on the topic of "Coupled behaviour of minimum candle flame oscillators", 6th to 17th May, 2019 at ICTP Trieste, Italy.

3. Participated in "DST-SERC School on Nonlinear Dynamics", 13th Nov. to 22nd Dec. 2012 at S.N Bose National Centre for Basic Sciences, Kolkata, India.