Raman I. Sujith

Fellowship
Hans Fischer Senior Fellow

Institution
Indian Institute of Technology Madras

Department
Aerospace Engineering

Host
Wolfgang Polifke

Focus Group
Advanced Stability Analysis

Short CV

In 1988, Raman I. Sujith graduated with a Bachelor of Technology in aerospace engineering from the Institute of Technology Madras (India) with first rank. He completed his Master of Science (1990) and doctorate (1994) with Prof. Ben Zinn at the Georgia Institute of Technology (Atlanta, USA). After graduation, he worked as a postdoctoral Fellow at the Georgia Institute of Technology until he joined the Institute of Technology Madras in 1995 as a lecturer. Since 2006, Prof. Sujith has been working as a full professor. As a Humboldt Fellow, Prof. Sujith worked at DLR Goettingen (2000 to 2001) and at TUM (2004). He is a Fellow of the Indian National Academy of Engineering.


Selected Awards

  • 2007, Elected Fellow of the Indian National Academy of Engineering (INAE)
  • 2005-2006, Swarnajayanti Fellowship of DST
  • 2002, Young Engineer Award of the Indian National Academy of Engineering
  • 2000-2001, 2004, Alexander von Humboldt Fellowship
  • 1994, Top graduate student in the College of Engineering, Georgia Institute of Technology
  • 1988, HAL prize, for First Rank in B. Tech at IIT Madras

Research Interests

Sujith is primarily interested in the study of thermoacoustic instabilities. He is currently working on investigating the non-normal and nonlinear dynamics of thermoacoustic systems. Sujith showed that, transient growth that results from the non-normal nature of thermoacoustic systems, in combination with nonlinear effects, can cause combustion systems found to be stable by classical modal analysis, to become unstable. This is a break with the established paradigm for thermoacoustic instability. He is working on establishing an alternative framework for thermoacoustic stability analysis.

Sujith works on both theoretical and experimental research. He works on optical diagnostics of flow and combustion.


Selected Publications

  • George, Joseph; Sujith, R. I.: Emergence of acoustic waves from vorticity fluctuations: Impact of non-normality. Physical Review E 80 (4), 2009.
  • Tulsyan, B.; Balasubramanian, K.; Sujith, R. I.: Revisiting a Model for Combustion Instability Involving Vortex Shedding. Combustion Science and Technology 181 (3), 2009, 457-482.
  • Nagaraja, Sharath; Kedia, Kushal; Sujith, R.I.: Characterizing energy growth during combustion instabilities: Singularvalues or eigenvalues? Proceedings of the Combustion Institute 32 (2), 2009, 2933-2940.
  • Kedia, K. S.; Nagaraja, S. B.; Sujith, R. I.: Impact of Linear Coupling on Thermoacoustic Instabilities. Combustion Science and Technology 180 (9), 2008, 1588-1612.
  • Balasubramanian, Koushik; Sujith, R. I.: Nonlinear Response of Diffusion Flames to Uniform Velocity Disturbances. Combustion Science and Technology 180 (3), 2008, 418-436.
  • Balasubramanian, Koushik; Sujith, R. I.: Thermoacoustic instability in a Rijke tube: Non-normality and nonlinearity. Physics of Fluids 20 (4), 2008, 044103.
  • Bala Subramanian, K.; Sujith, R. I.: Non-normality and nonlinearity in combustion–acoustic interaction in diffusion flames. J. Fluid Mech. 594, 2007.
  • Reddy, A. Panduranga; Sujith, R. I.; Chakravarthy, S. R.: Swirler Flow Field Characteristics in a Sudden Expansion Combustor Geometry. Journal of Propulsion and Power 22 (4), 2006, 800-808.
  • Subrahmanyam, P. Bala; Sujith, R. I.; Ramakrishna, M.: Determination of unsteady heat release distribution from acoustic pressure measurements: A reformulation of the inverse problem. The Journal of the Acoustical Society of America 114 (2), 2003, 686.

Publications as TUM-IAS

2015

  • Subramanian, Priya; Blumenthal, Ralf S.; Polifke, Wolfgang; Sujith, R.I.: Distributed time lag response functions for the modelling of combustion dynamics. Combustion Theory and Modelling 19 (2), 2015, 223-237 more… BibTeX Full text ( DOI )

2013

  • Blumenthal, R. S.; Tangirala, A. K.; Sujith, R. I. Polifke, W.: A Contribution to the Discussion on Thermoacoustic Energy from a Systemic Perspective. n3l - Int’l Summer School and Workshop on Non-Normal and Nonlinear Effects In Aero- and Thermoacoustics, 2013, 10 more… BibTeX Full text (mediaTUM)
  • Blumenthal, Ralf S.; Subramanian, Priya; Sujith, R.I.; Polifke, Wolfgang: Novel perspectives on the dynamics of premixed flames. Combustion and Flame 160 (7), 2013, 1215-1224 more… BibTeX Full text ( DOI )
  • Blumenthal, Ralf S.; Subramanian, Priya; Sujith, R.I.; Polifke, Wolfgang: Novel perspectives on the dynamics of premixed flames. Combustion and Flame 160 (7), 2013, 1215-1224 more… BibTeX Full text ( DOI )
  • Nair, Vineeth; Sujith, R. I.: Identifying homoclinic orbits in the dynamics of intermittent signals through recurrence quantification. Chaos 23 (3), 2013, 033136 more… BibTeX Full text ( DOI )
  • R. S. Blumenthal, P. Subramanian, R. I. Sujith, and W. Polifke: A time domain perspective on the response of premixed flames to flow perturbations. EUROMECH, Colloquium 546 - Combustion Dynamics and Combustion Noise, 2013 more… BibTeX

2012

  • George, K. Joseph; Sujith, R.I.: Disturbance energy norms: A critical analysis. Journal of Sound and Vibration 331 (7), 2012, 1552-1566 more… BibTeX Full text ( DOI )
  • Kabiraj, Lipika; Sujith, R. I.: Nonlinear self-excited thermoacoustic oscillations: intermittency and flame blowout. J. Fluid Mech. 713, 2012, 376-397 more… BibTeX Full text ( DOI )

2011

  • Selimefendigil, F.; Sujith, R.I.; Polifke, W.: Identification of heat transfer dynamics for non-modal analysis of thermoacoustic stability. Applied Mathematics and Computation 217 (11), 2011, 5134-5150 more… BibTeX Full text ( DOI )
  • Subramanian, P.; Sujith, R.I.: Non-normality and internal flame dynamics in premixed flame–acoustic interaction. J. Fluid Mech. 679, 2011, 315-342 more… BibTeX Full text ( DOI )

2010

  • Mariappan, S.; Sujith, R.I.: Thermoacoustic instability in a solid rocket motor: non-normality and nonlinear instabilities. J. Fluid Mech. 653, 2010, 1-33 more… BibTeX Full text ( DOI )