Ajit Kumar Dubey
Assistant professor
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Interests
Knocking in IC engines, Combustion instability, Thermo-acoustic instability in combustion systems, Combustion kinetics, Soot formation in hydrocarbon combustion, High-fidelity DNS of flame-acoustic coupling, Ammonia Combustion, Micro-combustion
ajit.dubey@me.iitr.ac.in
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7455092620
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BioSketch
Educational Details
SASTRA University
2010
B.Tech, Mechanical Engineering
Indian Institute of Technology Bombay
2012
M.Tech., Aerospace Engineering
Took University, Sendai, Japan
2017
Ph.D., Mechanical Engineering
Research
Projects
TOPIC START DATE FIELD DESCRIPTION FINANCIAL OUTLAY FUNDING AGENCY OTHER OFFICERS
High-fidelity DNS Flame-acoustic coupling with optimised experiments 01 Apr 2020 Combustion and Energy 2.8 Million JPY Japan Society for Promotion of Sciences (JSPS)




Teaching Engagements
Teaching Engagements
Engineering Thermodynamics ( MIN 106 )
Spring
Miscellaneous
Visits
Took University, Sendai, Japan
Ph. D.
Hokkaido University, Sapporo, Japan
Post doctoral research
Conference Papers

International Conferences (Peer reviewed)

  1. Dubey, A. K., Morii, Y., Nakamura, H., Maruta, K., 2-D DNS study of Autoignition modes in n-heptane combustion, 13th Asia Pacific Conference on Combustion 2021, 5-9 December 2021, Abu Dhabi, UAE (Online)
  2. Dubey, A. K., Tezuka, T., Morii, Y., Nakamura, H., Maruta, K., Experimental observation of acoustic parametric instability in a thermo-diffusively unstable mixture, 18th International Conference on Flow Dynamics, 27-29 October 2021, Sendai, Japan

  3. Dubey, A. K., Nakamura, H., Maruta, K., Intrinsic thermoacoustic instability of premixed flame in a tube: combustion theory perspectives, 17th International Conference on Flow Dynamics, 28-30 October 2020, Sendai, Japan

  4. Morii, Y., Dubey, A. K., Nakamura, H., Maruta, K., Two-dimensional laboratory-scale DNS for knocking experiment using n-heptane fuel, 17th International Conference on Flow Dynamics, 28-30 October 2020, Sendai, Japan

  5. Dubey, A. K., Koyama, Y. Hashimoto, N., Fujita, O., Thermoacoustic instability of downward propagating flames in small diameter tubes, The 2nd Pacific Rim Thermal Engineering Conference, 13-17 December 2019, Maui, Hawaii, USA

  6. Dubey, A. K., Koyama, Y. Hashimoto, N., Fujita, O., Effect of boundary conditions on thermo- acoustic instability of flames propagating in tubes, 25th International colloquium on the Dynamics of Explosions and Reactive Systems (ICDERS), 28 July-2 August 2019, Beijing, China, paper no. 84

  7. Dubey, A. K., Koyama, Y., Yoon, Y. Hashimoto, N., Fujita, O., Effect of Le on transition to parametric instability in downward propagating flames, 12th Asia Pacific Conference on Combustion, 1-5 July 2019, Fukuoka, Japan

  8. Dubey, A. K., Koyama, Y. Hashimoto, N., Fujita, O., Effect of geometrical parameters on thermo- acoustic instability of downward propagating flames in tubes, 37th International Symposium on Combustion, 29 July-3 August 2018, Dublin, Ireland

  9. Dubey, A. K., Tezuka, T., Hasegawa, S., Nakamura, H., Maruta, K., Effect of equivalence ratio on rich flames and sooting behavior of methane and ethane using a micro flow reactor with a controlled temperature profile, 12th International Conference on Flow Dynamics, 27-29 October 2015, Sendai, Japan

  10. Dubey, A. K., Tezuka, T., Hasegawa, S., Nakamura, H., Maruta, K., Sooting behavior of ethane in a micro flow reactor with a controlled temperature profile, 25th International colloquium on the Dynamics of Explosions and Reactive Systems (ICDERS), 2-7 August 2015, Leeds, United Kingdom, paper no. 284

  11. Dubey, A. K., Tezuka, T., Hasegawa, S., Nakamura, H., Maruta, K., Sooting behavior of alkanes in a micro flow reactor with a controlled temperature profile, 11th International Conference on Flow Dynamics, 8-10 October 2014, Sendai, Japan

Poster Presentations in International Combustion Symposium (Peer reviewed)

  1. Koyama, Y., Dubey, A. K., Hashimoto, N., Fujita, O., Experimental observation of parametric instability of downward propagating flame in combustion tube under higher acoustic vibration mode, 37th International Symposium on Combustion, 29 July-3 August 2018, Dublin, Ireland.

  2. Dubey, A. K., Tezuka, T., Hasegawa, S., Nakamura, H., Maruta, K., Study on sooting process in rich methane and ethane flames using a micro flow reactor with a controlled temperature profile, 36th International Symposium on Combustion, 31 July-5 August 2016, Seoul, Korea

  3. Dubey, A. K., Tezuka, T., Hasegawa, S., Nakamura, H., Maruta, K., Sooting behavior of alkanes in a micro flow reactor with a controlled temperature profile, 35th International Symposium on Combustion, 3-8 August 2014, San Francisco, USA

National Conferences

  1. Dubey, A. K., Morii, Y., Nakamura, H., Fujita, O., Maruta, K., Comparative theoretical study of thermoacoustic instability with single and twin flames in closed tubes,The 58th Symposium (Japanese) on Combustion, 2-4 December 2020, Online (Originally scheduled in Ehime, Japan)

  2. Kanamori, T., Dubey, A. K., Hashimoto, N., Fujita, O., An experimental observation of the cellular structure emerging under the secondary acoustic instability of the flame propagating downward in the acoustic fieldThe 58th Symposium (Japanese) on Combustion, 2-4 December 2020, Online (Originally scheduled in Ehime, Japan)

  3. Dubey, A. K., Koyama, Y., Yoon, Y. Hashimoto, N., Fujita, O., Morii, Y., Nakamura, H., Maruta, K., Thermoacoustic instability of flames propagating in a tube: experiments, analytical modeling and numerical simulations, 7th Prof. P J Paul Memorial Combustion Researchers Meet, 14-15 February 2020, IIT Bombay, Mumbai, India (Invited)

  4. Dubey, A. K., Koyama, Y. Hashimoto, N., Fujita, O., Critical diameter for thermo-acoustic instability of downward propagating flames in tubes, The 57th Symposium (Japanese) on Combustion, 20-22 November 2019, Sapporo, Japan

  1. Dubey, A. K., Koyama, Y. Hashimoto, N., Fujita, O., Higher mode parametric instability of downward propagating flames in tubes, The 56th Symposium (Japanese) on Combustion, 14-16 November 2018, Osaka, Japan

  2. Dubey, A. K., Koyama, Y. Hashimoto, N., Fujita, O., Effect of geometrical parameters on thermo- acoustic stability of downward propagating flames in tubes, The 55th Symposium (Japanese) on Combustion, 13-15 November 2017, Toyama, Japan

  3. Dubey, A. K., Tezuka, T., Hasegawa, S., Nakamura, H., Maruta, K., Sooting behavior of propane and n-butane in a micro flow reactor with a controlled temperature profile, The 53rd Symposium (Japanese) on Combustion, 16-18 November 2015, Tsukuba, Japan

  4. Dubey, A. K., Tezuka, T., Hasegawa, S., Nakamura, H., Maruta, K., Sooting tendencies of propane and n-butane in a micro flow reactor with a controlled temperature profile, The 52nd National Heat Transfer Symposium, 3-5 June 2015, Fukuoka, Japan

  5. Dubey, A. K., Tezuka, T., Hasegawa, S., Nakamura, H., Maruta, K., Investigating Sooting behavior of alkanes in a micro flow reactor with a controlled temperature profile, The 52nd Symposium (Japanese) on Combustion, 3-5 December 2014, Okayama, Japan

  6. Dubey, A. K., Tezuka, T., Hasegawa, S., Nakamura, H., Maruta, K., Sooting tendencies of hydrocarbons in a micro flow reactor with a controlled temperature profile, The 51st National Heat Transfer Symposium, 21-23 May 2014, Hamamatsu, Japan
  7. Dubey, A. K., Kumar, S., Large eddy simulation of vortical instabilities inn segmented solid rocket motor, 26th National convention of Aerospace Engineers, 24-25 November 2012, Hyderabad, India (Peer reviewed)