Present Address
Second Floor, RGD Lab,
Department of Aerospace Engineering,
Indian Institute of Technology Madras,
Chennai- 600036,
Tamil Nadu, India
Current Position
- Postdoctoral Fellow in the Centre of Excellence for Critical Transitions in Complex Systems at Indian Institute of Technology Madras
Education
- Integrated M.Tech. and Ph.D. | Aerospace Engineering | Indian Institute of Technology Madras
- Research: Dynamics of interacting thermoacoustic systems
- Advisor: Prof. R. I. Sujith
- CGPA: 8.78/10.00
- July 2018 - April 2024
- Bachelor of Engineering | Mechanical Engineering | Birla Institute of Technology
- Thesis: Design of Variable Geometry Exhaust System for Multi-Cylinder Engine
- B.I.T. G.P. Birla Scholarship: 5 semesters
- CGPA: 8.74/10.00
- 2012 - 2016
Research Interests
- Thermoacoustic instability, complex networks, time series analysis
Research Experience
- PhD candidate in Centre of Excellence for Critical Transitions in Complex Systems (led by Prof. R. I. Sujith ) at IIT Madras: 2019 - present
- Additional affiliation - Department of Aerospace Engineering, IIT Madras
- Experimental and numerical investigations into the dynamics of acoustically interacting laminar and turbulent thermoacoustic systems through dynamical systems theory perspective
- Use of mathematical techniques such as time series analysis and complex networks to analyze experimental data acquired with piezoelectric pressure transducers, photomultiplier modules and high-speed CMOS camera (Phantom-v 12.1)
- Final year thesis supervised by Prof. Apurba Kumar Roy at BIT Mesra : 2015 - 2016
- Design of a variable exhaust manifold system to improve scavenging characteristics of a four-stroke engine
- Theoretical and numerical analysis using Lotus Engine Simulation package
Work Experience
- Research Assistant at Department of Aerospace Engineering, Indian Institute of Technology Madras: 2019 - 2024
- Co-organizer of CTCS Webinar Series
- Designed the lab website on Wix
- Teaching Assistant at Indian Institute of Technology Madras
- AS5020 Aerospace Propulsion: July - November 2023
- AS3270 Propulsion: July - November 2022
- AS6320 Acoustic Instabilities in Aerospace Propulsion: January - May 2022
- AS1300 Thermodynamics for Aerospace Engineers: January - May 2020
- AS1020 Fluid Mechanics: July - November 2019
- GN6101 Strategies for Professional Growth: January - May 2019
- Production Shift In-charge at Exide Industries, Ahmednagar: 2016 - 2017
- Production department shift in-charge, responsible for meeting daily and weekly targets.
- Intern at Tata Hitachi Construction Machinery Company, Jamshedpur: May - June 2014
- Prepared visual check sheet to assist in fabricating Hoe Boom(s) of EX1200 and EX650 Hydraulic excavators.
Skills
- Technical proficiencies
- Proficient: Matlab, Linux (Ubuntu), LaTeX, NISignal Express, Inkscape
- Novice: Python, HTML5, SolidWorks, Catia, GIMP, Markdown, R
Research Output
- Publications
- Ankit Sahay, Abhishek Kushwaha, Samadhan A. Pawar, Midhun P.R., Jayesh M. Dhadphale, and R. I. Sujith, Mitigation of limit cycle oscillations in a turbulent thermoacoustic system via delayed acoustic self-feedback, Chaos, 33, 043118 (2023)
- Sneha Srikanth, Ankit Sahay, Samadhan A. Pawar, Krishna Manoj, and R. I. Sujith, Self-coupling: an effective method to mitigate thermoacoustic instability, Nonlinear Dyn., 110, 2247-2261 (2022)
- Ankit Sahay, Amitesh Roy, Samadhan A. Pawar, and R. I. Sujith, Dynamics of Coupled Thermoacoustic Oscillators Under Asymmetric Forcing, Phys. Rev. Appl., 15(4), 044011 (2021)
- Preprints
- Ankit Sahay, Muralikrishnan Gopalakrishnan Meena, and R. I. Sujith, Identifying interplay between hydrodynamic and acoustic fields in a turbulent combustor via community-based dimensionality reduction of vortical networks, arXiv (2023)
- Conferences
- Ankit Sahay, Muralikrishnan Gopalakrishnan Meena, and R. I. Sujith, Correlating hydrodynamic and acoustic fields in a turbulent combustor through community-based dimensionality reduction of vortical networks, 76th Annual Meeting of the Division of Fluid Dynamics 2023, Washington, DC, USA. (Presentation)
- Ankit Sahay, Samadhan A. Pawar, Abhishek Kushwaha, Krishna Manoj, Midhun P.R., Jayesh M. Dhadphale, and R. I. Sujith, Coupling induced quenching of thermoacoustic instabilities, Symposium on Thermoacoustics in Combustion: Industry meets Academia (SoTiC 2023), Zurich, Switzerland. (Did not attend)
- Ankit Sahay, Samadhan A. Pawar, Abhishek Kushwaha, Krishna Manoj, Midhun P.R., Jayesh M. Dhadphale, and R. I. Sujith, Coupling induced quenching of thermoacoustic instabilities, 29th International Congress on Sound and Vibration (ICSV 2023), Prague, Czech Republic. (Did not attend)
- Ankit Sahay, Abhishek Kushwaha, Samadhan A. Pawar, Midhun P.R., Jayesh M. Dhadphale, and R. I. Sujith, Delayed acoustic self-feedback control of limit cycle oscillations in a turbulent combustor, NODYCON 2023, Rome, Italy (Online) (Presentation)
- Ankit Sahay, Amitesh Roy, Samadhan A. Pawar, and R. I. Sujith, Coupled behaviour of oscillators under asymmetric forcing, Dynamic Days Europe 2021, Nice, France (Online) (Presentation)
- Sneha Srikanth, Ankit Sahay, Samadhan A. Pawar, Krishna Manoj, and R. I. Sujith, Oscillation Quenching through Self-Coupling: Experiments and Modeling, 13th Conference on Nonlinear Systems and Dynamics, 2021, Thanjavur, India (Online)
Invited Talks
- 2024: Workshop on Complex Networks and Application to Fluid Dynamics (Presentation)
Peer review
- Proceedings of the Combustion Institute
Awards and scholarships
- 2022: International Immersion Experience Travel Award (Not availed)
- 2019 - 2024: Half-Time Research Assistantship from Government of India
- 2018 - 2019: Half-Time Teaching Assistantship from Government of India
- 2012 - 2016: G. P. Birla Scholarship for five semesters during B.E. in Birla Institute of Technology