Journals

  1. Tupkari, S., Gadgil, H., Nair, V. "LES of supercritical nitrogen jets at high swirl numbers", Computational Thermal Sciences 17.2 (2025): 1-17.
  2. Tupkari, S., Gadgil, H., Nair, V. "A numerical study of dynamic flow patterns in supercritical jet flows for various swirl numbers", Computers & Fluids 285 (2024): 106446.
  3. Premchand, C. P., Krishnan, A., Raghunathan, M., Midhun, P. R., Reeja, K. V., Sujith, R. I., and Nair, V., "Identifying optimal location for control of thermoacoustic instability through statistical analysis of saddle point trajectories", Chaos: An Interdisciplinary Journal of Nonlinear Science 34.8 (2024): 083113.
  4. Thakare, P., Nair, V., Sinha, K. "Nonlinear scaling of fluctuation kinetic energy for shock-vorticity wave interaction", Physics of Fluids 36 (2024): 056106.
  5. Thakare, P., Sinha, K., Nair, V. "Nonlinear generation of sound and mean pressure drop in shock-shear interaction", Physics of Fluids 35 (2023): 016123.
  6. Thakare, P., Nair, V., Sinha, K. "A weakly nonlinear framework to study shock-vorticity interaction", Journal of Fluid Mechanics 933 (2022): A48.
  7. Roy, A., Premchand, C. P., Raghunanthan, M., Krishnan, A., Nair, V., Sujith, R. I. "Critical region in the spatiotemporal dynamics of a turbulent thermoacoustic system and smart passive control", Combustion and Flame 226 (2021): 274-284.
  8. Edgington-Mitchell, D., Weightman, J., Lock, S., Kirby, R., Nair, V., Soria, J., Honnery, D. "The generation of screech tones by shock leakage", Journal of Fluid Mechanics 908 (2021): A46.
  9. Bhuvan, C. H., Hiranandani, K., Aravind, B., Nair, V., Kumar, S. "Novel flame dynamics in rich mixture of premixed propane-air in a planar microcombustor", Physics of Fluids, 32.10 (2020): 103604.
  10. Premchand, C. P., George, N. B., Raghunathan, M., Unni, V. R., Sujith, R. I., and Nair, V., "Lagrangian analysis of flame dynamics in the flow-field of a bluff-body stabilized combustor", Journal of Engineering for Gas Turbines and Power 142.1 (2019): 011015.
  11. Premchand, C. P., George, N. B., Raghunathan, M., Unni, V. R., Sujith, R. I., and Nair, V., "Lagrangian analysis of intermittent sound sources in the flow-field of a bluff-body stabilized combustor", Physics of Fluids 31.2 (2019), 025115.
  12. Venkatramani, J., Nair, V., Sujith R. I., Gupta, S., and Sarkar, S. "Multi-fractality in aeroelastic response as a precursor to flutter", Journal of Sound and Vibration 386 (2017): 390-406.
  13. Nair, V., Alenius, E., Boij, S., and Efraimsson, G. "Inspecting sound sources in an orifice-jet flow using Lagrangian Coherent Structures", Computers & Fluids 140 (2016): 397-405.
  14. Sheshadri, A., Nair, V., and Sujith R. I. "A reduced-order deterministic model describing intermittency route to combustion instability", Combustion Theory and Modelling 20.3 (2016): 441-456.
  15. Kerres, B., Nair, V., Cronhjort, A., and Mihaescu, M. "Analysis of the Turbocharger Compressor Surge Margin Using a Hurst-Exponent-based Criterion", SAE International Journal of Engines 9.3 (2016).
  16. Venkatramani, J., Nair, V., Sujith R. I., Gupta, S., and Sarkar, S. "Precursors to flutter instability by an intermittency route: a model free approach", Journal of Fluids and Structures 61 (2016): 376-391.
  17. Nair, V., and Sujith R. I. "Precursors to self-sustained oscillations in aeroacoustic systems", International Journal of Aeroacoustics (2016): 312-323.
  18. Nair, V., and Sujith R. I. "Intermittency as a transition state in combustor dynamics: An explanation for flame dynamics near lean blowout", Combustion Science and Technology 187.11 (2015): 1821-1835.
  19. Nair, V., and Sujith R. I. "A reduced-order model for the onset of combustion instability: Physical mechanisms for intermittency and precursors", Proceedings of the Combustion Institute 35.3 (2015): 3193-3200.
  20. Nair, V., Thampi, G. and Sujith R. I. "Intermittency route to thermoacoustic instability in turbulent combustors", Journal of Fluid Mechanics 756 (2014): 470-487.
  21. Nair, V., and Sujith R. I. "Multifractality in combustion noise: predicting an impending combustion instability", Journal of Fluid Mechanics 747 (2014): 635-655.
  22. Nair, V., Thampi, G., Karuppusamy, S., Gopalan, S., and Sujith, R. I., "Loss of chaos in combustion noise as a precursor of impending combustion instability", International Journal of Spray and Combustion Dynamics 5.4 (2013): 273-290.
  23. Nair, V., and Sujith, R. I. "Identifying homoclinic orbits in the dynamics of intermittent signals through recurrence quantification." Chaos: An Interdisciplinary Journal of Nonlinear Science 23.3 (2013): 033136.
  24. Nair, V., Sarkar, S., and Sujith, R. I., "Uncertainty quantification of subcritical bifurcations", Probabilistic Engineering Mechanics 34 (2013): 177-188.

Refereed conferences

  1. Singh, A.,Mukherjee, I., and Nair, V., "Instability Amplitude Suppression in a Double Orifice Flow Through External Periodic Forcing", ASME Turbo expo 2024 (GT2024-127399), June 24 - 28, 2024, London.
  2. Singh, A., and Nair, V., "Reduced Order Model for Cavity-Based Combustors Describing Various Bifurcations As Cavity Size Is Varied", ASME Turbo expo 2024 (GT2024-128504), June 24 - 28, 2024, London.
  3. Premchand, C.P., Raghunathan, M., Midhun, P.R., Reeja, K.V., Sujith, R. I., and Nair, V., "Smart passive control of thermoacoustic instability in a bluff-body stabilized combustor: A Lagrangian analysis of critical structures", ASME Turbo expo 2020 (GT2020-14929), September 21 - 22, 2020, Online.
  4. Premchand, C. P., George, N. B., Raghunathan, M., Unni, V. R., Sujith, R. I., and Nair, V., "Lagrangian saddle point analysis in the flow-field of a bluff-body stabilized combustor", ASME Turbo expo 2019 (GT2019-91713), June 17- 21, 2019, Phoenix.
  5. Nair, V., and Sujith R. I. "A reduced-order model for the onset of combustion instability: Physical mechanisms for intermittency and precursors", 35th International Symposium on Combustion (PROCI-D-13-00136), August 3 - 8, 2014, San Francisco.
  6. Nair, V., and Sujith, R. I. "Intermittency in the Dynamics of Turbulent Combustors", ASME Turbo Expo 2014 (GT2014-26018), June 16 - 20, 2014, Dusseldorf.
  7. Nair, V., Thampi, G., and Sujith, R. I. "Engineering Precursors To Forewarn The Onset Of An Impending Combustion Instability", ASME Turbo Expo 2014 (GT2014-26020), June 16 - 20, 2014, Dusseldorf.

Other conferences

  1. Tupkari, S., Gadgil, H., Nair, V. "Effect of Swirl Strength on Supercritical Jet Flows", AIAA AVIATION 2023 Forum, June 12-16, 2023, San Diego.
  2. Tupkari, S., Gadgil, H., Nair, V. "Large Eddy Simulations (LES) of Supercritical Nitrogen Jets", Conference on Fluid Mechanics and Fluid Power, December 14-16, 2022, Roorkee.
  3. Thakare, P., Sinha, K., Nair, V. "A weakly nonlinear analysis for pressure generation in shock vorticity interaction", AIAA AVIATION 2022 Forum, June 27 - July 1, 2022, Chicago.
  4. Premchand, C.P., Krishnan, A., Raghunathan, M., Midhun, P.R., Reeja, K.V., Sujith, R. I., and Nair, V., "Critical structures in vortex dominated thermoacoustic systems", 73rd Annual Meeting of the APS Division of Fluid Dynamics, November 22-24, 2020, Online.
  5. Thakare, P., Sinha, K., Nair, V., "Second-Order Analysis of Normal Shock Vorticity Wave Interaction", 6th National Symposium on Shock Waves, February 26 - 28, 2020, Chennai.
  6. Premchand, C.P., Reeja, K.V., Midhun, P.R., Raghunathan, M., Sujith, R. I., and Nair, V., "Identifying critical regions of sound production in the flow through a square duct containing two circular orifice plates", 12th Conference on Nonlinear Systems and Dynamics, December 12-15, 2019, Kanpur.
  7. Nair, V., Premchand, C.P., Reeja, K.V., Midhun, P.R., Raghunathan, M., and Sujith, R. I., "Lagrangian analysis of intermittent sound sources in a flow-through square duct containing two circular orifice plates", 72nd Annual Meeting of the APS Division of Fluid Dynamics, November 23-26, 2019, Seattle.
  8. Thakare, P., Sethuraman, Y. P., Sinha, K., Nair, V., "Comparative Study of Linear Interaction Analysis and DNS for Shock-Vorticity Interaction: Scaling of Non-Linear Terms", Proceedings of the 32nd International Symposium on Shock Waves, July 14-19, 2019, Singapore.
  9. Thakare, P., Nair, V., Kumar, S., "Simulation of Combustion Instability in Solid Rocket Motor", HEMCE - 2017, 23-25 November, 2017, Pune.
  10. Nair, V., Nastac, G., Magri, L., Ihme, M., "Inspecting Lagrangian coherent structures in turbulent combustion simulations", Proceedings of the Summer Program, Centre for Turbulence Research, Stanford University, 2016.
  11. Sujith, R. I., Nair, V., "Understanding the onset of whistling: modelling and analysis", 67th Annual Meeting of the APS Division of Fluid Dynamics, November 23-25, 2014, San Francisco.
  12. Nair, V. and Sujith R. I. "Nonlinear combustion dynamics in a turbulent flow-field", 10th European Fluid Mechanics Conference, September 14 - 18, 2014, Copenhagen.
  13. Nair, V., Thampi G., and Sujith R. I. "Intermittent Burst Presage the Onset of Combustion Instability in Turbulent Combustors", n3l - Int’l Summer School and Workshop on Non-Normal and Nonlinear Effects in Aero- and Thermoacoustics, June 18-21, 2013, Munich.
  14. Nair, V., Sarkar, S., and Sujith, R. I. "Uncertainty quantification of subcritical bifurcation in a Rijke tube", 16th AIAA/CEAS Aeroacoustics Conference (AIAA 2010-3858), June 07 - 09, 2010, Stockholm.

Patents

  1. Premchand, C. P., Nair, V., Sujith, R. I., George, N. B., Raghunathan, M. & Unni, V. R. (joint filing with IIT Madras), "System and method for optimizing passive control strategies of oscillatory instabilities using finite-time Lyapunov exponents", Priority date: June 6, 2019, Indian Patent: IN201941022545, US Patent: US11378488B2.
  2. Ramani, V., Nair, V., Sujith, R. I., Sarkar, S. "Set-up and methodology for generating precursors for early detection of aeroelastic instabilities", Priority: IN4273CH2014, Priority date: September 2, 2014, Indian Patent: IN20140427314
  3. Murugesan, M., Unni, V. R., Nair, V., Sujith, R. I. "Devices and methods for early prediction of impending instabilities of a system", Priority: IN5350CH2014, Priority date: Apr 29, 2014, US Patent: US10337414B2.
  4. Unni, V. R., Nair, V., Sujith, R. I., Mukhopadhyay, A., "System and method for controlling oscillatory instabilities in a device", Priority: Priority: IN5590CH2013, Priority date: Dec 4, 2013, Indian Patent: IN2013CH05590A, US Patent: U10095247B2.
  5. Unni, V. R., Nair, V., Sujith, R. I., "System and method for detecting precursors to control blowout in combustion systems", Priority: IN5041CH2013, Priority date: Nov 8, 2013, Indian Patent: IN2013CH05041A, US Patent: US20160273767A1.
  6. Nair, V., Thampi, G., Karuppusamy, S., Gopalan, S., and Sujith, R. I., "System and method for predetermining the onset of impending oscillatory instabilities in practical devices", Priority: IN4110CH2012, Priority date: Oct 1, 2012. Indian Patent: IN2012CH04110A, US Patent: 9804054 B2, Canada Patent: CA2886848C, European Patent: EP2904247B1, Japan Patent: 6329550, China Patent: 104704226B.

Books and book chapters

  1. Patel, M., Nair, V. and Sarkar, S. "Uncertainty quantification of an airfoil control surface flutter system." in Safety, Reliability, Risk and Life-Cycle Performance of Structures and Infrastructures, (Eds. Deodatis, G., Ellingwood, B. R. and Frangpool, D. M.), CRC Press, Jan. 2014, pp. 5613-5618.

Copyrights

  1. ether©: Copyrighted software for detection of impending thermoacoustic instability (there are three copyrights for three versions of this software), Registration number: SW-12386/2019.