R. I. Sujith

Sujith was born on 11 May 1967 in Thiruvananthapuram, Kerala, India. He completed his Bachelor of Technology in aerospace engineering at IIT Madras. He earned his PhD in aerospace engineering on "Behavior of Droplets in Axial Acoustic Fields" working with Ben T. Zinn at the Georgia Institute of Technology from 1990 to 1994. He worked as a postdoctoral fellow in the same department from 1994 to 1995. He then joined IIT Madras as a lecturer in the Department of Aerospace Engineering.{{Cite web |title=Prof. R. I. Sujith |url=http://www.ae.iitm.ac.in/~sujith/bio.html |access-date=2025-05-29 |website=www.ae.iitm.ac.in}}

Sujith's research has been in the field of thermo-acoustic instability. He demonstrated that low-amplitude aperiodic pressure fluctuations, or combustion noise, are deterministic and chaotic.{{Cite journal |last1=Tony |first1=J. |last2=Gopalakrishnan |first2=E. A. |last3=Sreelekha |first3=E. |last4=Sujith |first4=R. I. |date=2015-12-02 |title=Detecting deterministic nature of pressure measurements from a turbulent combustor |url=https://link.aps.org/doi/10.1103/PhysRevE.92.062902 |journal=Physical Review E |volume=92 |issue=6 |pages=062902 |doi=10.1103/PhysRevE.92.062902|pmid=26764769 |bibcode=2015PhRvE..92f2902T |url-access=subscription }}{{cite journal |last1=Nair |first1=Vineeth |last2=Thampi |first2=Gireehkumaran |last3=Karuppusamy |first3=Sulochana |last4=Gopalan |first4=Saravanan |last5=Sujith |first5=R. I. |title=Loss of Chaos in Combustion Noise as a Precursor of Impending Combustion Instability |journal=International Journal of Spray and Combustion Dynamics |date=December 2013 |volume=5 |issue=4 |pages=273–290 |doi=10.1260/1756-8277.5.4.273}} He modelled the state of intermittency as the intermediate dynamical state as turbulent thermo-acoustic systems transition from the state of combustion noise to the state of thermo-acoustic instability.{{Cite journal |last1=Nair |first1=Vineeth |last2=Thampi |first2=Gireeshkumaran |last3=Sujith |first3=R. I. |date=October 2014 |title=Intermittency route to thermoacoustic instability in turbulent combustors |url=https://www.cambridge.org/core/journals/journal-of-fluid-mechanics/article/abs/intermittency-route-to-thermoacoustic-instability-in-turbulent-combustors/4C285E468DB6A5DF8672357888AD8EDC |journal=Journal of Fluid Mechanics |language=en |volume=756 |pages=470–487 |doi=10.1017/jfm.2014.468 |bibcode=2014JFM...756..470N |s2cid=122023113 |issn=0022-1120|url-access=subscription }} He suggested that combustion noise exhibits multifractality, which vanishes with the onset of instability.{{Cite journal |last1=Nair |first1=Vineeth |last2=Sujith |first2=R. I. |date=May 2014 |title=Multifractality in combustion noise: predicting an impending combustion instability |url=https://www.cambridge.org/core/journals/journal-of-fluid-mechanics/article/abs/multifractality-in-combustion-noise-predicting-an-impending-combustion-instability/B5D2BC7ADB07899855AD264C717B5993 |journal=Journal of Fluid Mechanics |language=en |volume=747 |pages=635–655 |doi=10.1017/jfm.2014.171 |bibcode=2014JFM...747..635N |s2cid=124390563 |issn=0022-1120|url-access=subscription }} His analogy of the onset of oscillatory instabilities to Bose-Einstein condensation has provided universal scaling laws for various systems.{{Cite journal |last1=Tandon |first1=Shruti |last2=Sujith |first2=R. I. |date=2021-04-01 |title=Condensation in the phase space and network topology during transition from chaos to order in turbulent thermoacoustic systems |url=https://doi.org/10.1063/5.0039229 |journal=Chaos: An Interdisciplinary Journal of Nonlinear Science |volume=31 |issue=4 |page=043126 |doi=10.1063/5.0039229 |pmid=34251230 |bibcode=2021Chaos..31d3126T |s2cid=234819616 |issn=1054-1500|url-access=subscription }}

Sujith's introduction of complex networks to thermo-acoustics has shown structural changes in network topology during transitions from combustion noise to instability, aiding in early detection of such transitions.{{Cite journal |last1=Murugesan |first1=Meenatchidevi |last2=Sujith |first2=R. I. |date=June 2015 |title=Combustion noise is scale-free: transition from scale-free to order at the onset of thermoacoustic instability |url=https://www.cambridge.org/core/journals/journal-of-fluid-mechanics/article/abs/combustion-noise-is-scalefree-transition-from-scalefree-to-order-at-the-onset-of-thermoacoustic-instability/DC7143AECB28B9BC71C15C3CD007AE8F |journal=Journal of Fluid Mechanics |language=en |volume=772 |pages=225–245 |doi=10.1017/jfm.2015.215 |bibcode=2015JFM...772..225M |s2cid=124804329 |issn=0022-1120|url-access=subscription }}{{Cite journal |last1=Krishnan |first1=Abin |last2=Sujith |first2=R. I. |last3=Marwan |first3=Norbert |last4=Kurths |first4=Jürgen |date=June 2021 |title=Suppression of thermoacoustic instability by targeting the hubs of the turbulent networks in a bluff body stabilized combustor |url=https://www.cambridge.org/core/journals/journal-of-fluid-mechanics/article/abs/suppression-of-thermoacoustic-instability-by-targeting-the-hubs-of-the-turbulent-networks-in-a-bluff-body-stabilized-combustor/16D904267E7019B421A6815291E533FA |journal=Journal of Fluid Mechanics |language=en |volume=916 |pages=A20 |doi=10.1017/jfm.2021.166 |bibcode=2021JFM...916A..20K |s2cid=233215294 |issn=0022-1120|url-access=subscription }} His research has involved a variety of topics relevant in thermo-acoustic systems such as the chimera states,{{Cite journal |last1=Mondal |first1=Sirshendu |last2=Unni |first2=Vishnu R. |last3=Sujith |first3=R. I. |date=January 2017 |title=Onset of thermoacoustic instability in turbulent combustors: an emergence of synchronized periodicity through formation of chimera-like states |url=https://www.cambridge.org/core/journals/journal-of-fluid-mechanics/article/abs/onset-of-thermoacoustic-instability-in-turbulent-combustors-an-emergence-of-synchronized-periodicity-through-formation-of-chimeralike-states/4E28C01F191E53868038ACECFDE0B8FD |journal=Journal of Fluid Mechanics |language=en |volume=811 |pages=659–681 |doi=10.1017/jfm.2016.770 |bibcode=2017JFM...811..659M |s2cid=125934181 |issn=0022-1120|url-access=subscription }} R-tipping,{{Cite journal |last1=Tony |first1=J. |last2=Subarna |first2=S. |last3=Syamkumar |first3=K. S. |last4=Sudha |first4=G. |last5=Akshay |first5=S. |last6=Gopalakrishnan |first6=E. A. |last7=Surovyatkina |first7=E. |last8=Sujith |first8=R. I. |date=2017-07-14 |title=Experimental investigation on preconditioned rate induced tipping in a thermoacoustic system |journal=Scientific Reports |language=en |volume=7 |issue=1 |pages=5414 |doi=10.1038/s41598-017-05814-y |issn=2045-2322 |pmc=5511272 |pmid=28710448|bibcode=2017NatSR...7.5414T }}{{Cite journal |last1=Pavithran |first1=Induja |last2=Midhun |first2=P. R. |last3=Sujith |first3=R. I. |date=2023-08-01 |title=Tipping in complex systems under fast variations of parameters |url=https://doi.org/10.1063/5.0162503 |journal=Chaos: An Interdisciplinary Journal of Nonlinear Science |volume=33 |issue=8 |doi=10.1063/5.0162503 |pmid=38060796 |arxiv=2209.06747 |bibcode=2023Chaos..33h1105P |s2cid=252222536 |issn=1054-1500}} synchronisation theory, amplitude death, partial amplitude death, and phase flip bifurcation.{{Cite journal |last1=Manoj |first1=Krishna |last2=Pawar |first2=Samadhan A. |last3=Sujith |first3=R. I. |date=2018-08-02 |title=Experimental Evidence of Amplitude Death and Phase-Flip Bifurcation between In-Phase and Anti-Phase Synchronization |journal=Scientific Reports |language=en |volume=8 |issue=1 |pages=11626 |doi=10.1038/s41598-018-30026-3 |issn=2045-2322 |pmc=6072762 |pmid=30072725|bibcode=2018NatSR...811626M }}{{Cite journal |last1=Dange |first1=Suraj |last2=Manoj |first2=Krishna |last3=Banerjee |first3=Subham |last4=Pawar |first4=Samadhan A. |last5=Mondal |first5=Sirshendu |last6=Sujith |first6=R. I. |date=2019-09-01 |title=Oscillation quenching and phase-flip bifurcation in coupled thermoacoustic systems |url=https://doi.org/10.1063/1.5114695 |journal=Chaos: An Interdisciplinary Journal of Nonlinear Science |volume=29 |issue=9 |doi=10.1063/1.5114695 |pmid=31575137 |bibcode=2019Chaos..29i3135D |s2cid=203639549 |issn=1054-1500|url-access=subscription }}

In 2023 he was inducted as International Member of the United States National Academy of Engineering.{{cite news |url= https://www.thehindu.com/news/cities/chennai/iit-madras-professor-elected-to-us-national-academy-of-engineering/article66503559.ece |title= IIT Madras professor elected to U.S. National Academy of Engineering |author= |newspaper= The Hindu |date= February 13, 2023 |publisher= |access-date= August 22, 2023 |quote=...Prof Sujith is the second Indian to be elected to the aerospace section of the Academy.}} He was selected as a fellow of the Combustion Institute in 2022,{{cite web |url= https://www.combustioninstitute.org/resources/awards/fellows-of-the-combustion-institute/ |title= 2022 Class of Fellows |author= |work= The Combustion Institute | Promoting and disseminating combustion science research |date= |publisher= |access-date= September 5, 2023 |quote=For highly original applications of dynamical systems and complex systems theory to the analysis and control of thermoacoustic combustion instabilities.}} and was awarded the Distinguished Fellowship of the International Institute of Acoustics and Vibration in 2021.{{cite web |url= https://timesofindia.indiatimes.com/city/chennai/iit-madras-professor-wins-iiav-fellowship/articleshow/87511594.cms |title= IIT-Madras professor wins IIAV fellowship |author=U Tejonmayam |date= November 3, 2021 |work= The Times of India |access-date= September 5, 2023 |quote=...is awarded to individuals with distinguished careers in acoustics vibration.}} He received the J. C. Bose Fellowship in 2019{{cite web |url= https://www.indiascienceandtechnology.gov.in/nationalfellows/dr-sujith-r-i |title= National Fellows |author= |date= |publisher= |access-date= September 5, 2023 |quote=}} and the Swarnajayanti Fellowship in 2005 from the Department of Science and Technology of the Government of India.{{cite web |url= https://dst.gov.in/sites/default/files/sjaward05-06.pdf |title= SwarnaJayanti Fellowship Awards For the Year 2005-2006 |author= |date= |publisher= |access-date= September 5, 2023 |quote=}} He is a fellow of the Indian Academy of Sciences,{{cite web |url= https://fellows.ias.ac.in/profile/v/FL2017023 |title= Fellow of the Indian Academy of Sciences |author= |date= |publisher= |access-date= September 5, 2023 |quote=}} an associate fellow of the American Institute of Aeronautics and Astronautics, a fellow of the Indian National Academy of Engineering and an honorary fellow of the Indian Society of Systems for Science and Engineering (ISSE). He has been awarded Hans Fischer Senior Fellowship from the TUM Institute for Advanced Study in 2010. He was awarded fellowship of the Alexander von Humboldt Foundation{{cite web |url= https://www.humboldt-foundation.de/en/apply/sponsorship-programmes/feodor-lynen-research-fellowship/feodor-lynen-search-for-a-host/singleview?tx_rsmavhsolr_solrviewlynenhost%5BpPersonId%5D=1069822&cHash=0c49b4e0133141fce6c1f89f9bef75ac |title= Alexander Von Humboldt Fellowship |author= |date= |publisher= |access-date= September 5, 2023 |quote=}} in 2000. He was the editor-in-chief of the International Journal of Spray and Combustion Dynamics from 2009 to 2015. He is currently a member of the editorial advisory board of Chaos: An Interdisciplinary Journal of Nonlinear Science.{{cite web | url=https://pubs.aip.org/aip/cha/pages/advisory | title=CHA - Advisory Board | Chaos: An Interdisciplinary Journal of Nonlinear Science | AIP Publishing }}

{{reflist}}

{{Authority control}}

{{DEFAULTSORT:Sujith, Nair}}

Category:1967 births

Category:Living people

{{Improve categories|date=May 2025}}