Items where Author is "Unni, Vishnu R."

Article

Braun, Tobias ; Unni, Vishnu R. ; Sujith, R. I. ; Kurths, Juergen ; Marwan, Norbert (2021) Detection of dynamical regime transitions with lacunarity as a multiscale recurrence quantification measure Nonlinear Dynamics, 104 (4). pp. 3955-3973. ISSN 0924-090X

Sujith, R.I. ; Unni, Vishnu R. (2021) Dynamical systems and complex systems theory to study unsteady combustion Proceedings of the Combustion Institute, 38 (3). pp. 3445-3462. ISSN 1540-7489

Sujith, R. I. ; Unni, Vishnu R. (2020) Complex system approach to investigate and mitigate thermoacoustic instability in turbulent combustors Physics of Fluids, 32 (6). 061401. ISSN 1070-6631

Raghunathan, Manikandan ; George, Nitin B. ; Unni, Vishnu R. ; Midhun, P. R. ; Reeja, K. V. ; Sujith, R. I. (2020) Multifractal analysis of flame dynamics during transition to thermoacoustic instability in a turbulent combustor Journal of Fluid Mechanics, 888 . ISSN 0022-1120

Weng, Yue ; Unni, Vishnu R. ; Sujith, R. I. ; Saha, Abhishek (2020) Synchronization framework for modeling transition to thermoacoustic instability in laminar combustors Nonlinear Dynamics, 100 (4). pp. 3295-3306. ISSN 0924-090X

Pavithran, Induja ; Unni, Vishnu R. ; Varghese, Alan J. ; Premraj, D. ; Sujith, R. I. ; Vijayan, C. ; Saha, Abhishek ; Marwan, Norbert ; Kurths, Jürgen (2020) Universality in spectral condensation Scientific Reports, 10 (1). ISSN 2045-2322

Pavithran, Induja ; Unni, Vishnu R. ; Varghese, Alan J. ; Sujith, R. I. ; Saha, Abhishek ; Marwan, Norbert ; Kurths, Jürgen (2020) Universality in the emergence of oscillatory instabilities in turbulent flows EPL (Europhysics Letters), 129 (2). p. 24004. ISSN 1286-4854

Kasthuri, Praveen ; Unni, Vishnu R. ; Sujith, R. I. (2019) Bursting and mixed mode oscillations during the transition to limit cycle oscillations in a matrix burner Chaos, 29 (4). 043117. ISSN 1054-1500

Unni, Vishnu R. ; Gopalakrishnan, E. A. ; Syamkumar, K. S. ; Sujith, R. I. ; Surovyatkina, Elena ; Kurths, Jürgen (2019) Interplay between random fluctuations and rate dependent phenomena at slow passage to limit-cycle oscillations in a bistable thermoacoustic system Chaos, 29 (3). 031102. ISSN 1054-1500

Premchand, C. P. ; George, Nitin B. ; Raghunathan, Manikandan ; Unni, Vishnu R. ; Sujith, R. I. ; Nair, Vineeth (2019) Lagrangian Analysis of Flame Dynamics in the Flow Field of a Bluff Body-Stabilized Combustor Journal of Engineering for Gas Turbines & Power, 142 (1). ISSN 0742-4795

Premchand, C. P. ; George, Nitin B. ; Raghunathan, Manikandan ; Unni, Vishnu R. ; Sujith, Raman I. ; Nair, Vineeth (2019) Lagrangian analysis of intermittent sound sources in the flow-field of a bluff-body stabilized combustor Physics of Fluids, 31 (2). 025115. ISSN 1070-6631

Godavarthi, Vedasri ; Pawar, Samadhan A. ; Unni, Vishnu R. ; Sujith, R. I. ; Marwan, Norbert ; Kurths, Jürgen (2018) Coupled interaction between unsteady flame dynamics and acoustic field in a turbulent combustor Chaos, 28 (11). p. 113111. ISSN 1054-1500

Unni, Vishnu R. ; Chaudhuri, Swetaprovo ; Sujith, R. I. (2018) Flame blowout: Transition to an absorbing phase Chaos, 28 (11). p. 113121. ISSN 1054-1500

Unni, Vishnu R. ; Krishnan, Abin ; Manikandan, R. ; George, Nitin B. ; Sujith, R. I. ; Marwan, Norbert ; Kurths, Jürgen (2018) On the emergence of critical regions at the onset of thermoacoustic instability in a turbulent combustor Chaos, 28 (6). 063125. ISSN 1054-1500

George, Nitin B. ; Unni, Vishnu R. ; Raghunathan, Manikandan ; Sujith, R. I. (2018) Pattern formation during transition from combustion noise to thermoacoustic instability via intermittency Journal of Fluid Mechanics, 849 . pp. 615-644. ISSN 0022-1120

Seshadri, Akshay ; Pavithran, Induja ; Unni, Vishnu R. ; Sujith, R. I. (2018) Predicting the Amplitude of Limit-Cycle Oscillations in Thermoacoustic Systems with Vortex Shedding AIAA Journal, 56 (9). pp. 3507-3514. ISSN 0001-1452

Mondal, Sirshendu ; Unni, Vishnu R. ; Sujith, R. I. (2017) Onset of thermoacoustic instability in turbulent combustors: an emergence of synchronized periodicity through formation of chimera-like states Journal of Fluid Mechanics, 811 . pp. 659-681. ISSN 0022-1120

Unni, Vishnu R. ; Sujith, R. I. (2017) Flame dynamics during intermittency in a turbulent combustor Proceedings of the Combustion Institute, 36 (3). pp. 3791-3798. ISSN 1540-7489

Agarwal, Harshal ; Unni, Vishnu R. ; Akhil, K. T. ; Ravi, N. T. ; Iqbal, S. Md. ; Sujith, R. I. ; Pesala, Bala (2016) Compact standing wave thermoacoustic generator for power conversion applications Applied Acoustics, 110 . pp. 110-118. ISSN 0003-682X

Unni, Vishnu R. ; Sujith, R. I. (2015) Multifractal characteristics of combustor dynamics close to lean blowout Journal of Fluid Mechanics, 784 . pp. 30-50. ISSN 0022-1120

Unni, Vishnu R. ; Mukhopadhyay, Achintya ; Sujith, R. I. (2015) Online detection of impending instability in a combustion system using tools from symbolic time series analysis International Journal of Spray and Combustion Dynamics, 7 (3). pp. 243-256. ISSN 1756-8277

Unni, Vishnu R. ; Yogesh Prasaad, M. S. ; Ravi, N. T. ; Iqbal, S. Md. ; Pesala, Bala ; Sujith, R. I. (2015) Experimental investigation of bifurcations in a thermoacoustic engine International Journal of Spray and Combustion Dynamics, 7 (2). pp. 113-130. ISSN 1756-8277

Conference or Workshop Item

Premchand, C. P. ; George, Nitin B. ; Raghunathan, Manikandan ; Unni, Vishnu R. ; Sujith, R. I. ; Nair, Vineeth (2019) Lagrangian Saddle Point Analysis in the Flow-Field of a Bluff-Body Stabilized Combustor In: ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition, June 17–21, 2019, Phoenix, Arizona, USA.