Dr. Ajit Kumar

About

Dr. Ajit Kumar is a Asst. Professor in the Department of Mechanical Engineering in the School of Engineering and Technology, Sharda University, India. Dr. Ajit Kumar obtained his doctorate from IIT Patna, in the area of liquid droplet dynamics. He obtained his B. Tech Mechanical Engineering from KIIT University, Bhubaneswar, and his M.Tech in Thermal Engineering from NIT Silchar. His area of research interest includes droplet and bubble dynamics/ Micro-scale fluid flow and heat transfer/ Natural and mixed convection/ Evaporation and condensation/ Non-Newtonian fluid mechanics/ Computational fluid dynamics (CFD)/ Surface engineering. He has published more than ten research papers in peer-reviewed international journals with high impact factors. 

Experience

• Asst. Professor, Sharda University, Greater Noida, July 2023 – Continuing

Qualification

• Ph.D. in Mechanical Engineering from Indian Institute of Technology Patna, IIT Patna (2019-2024). Thesis title: Droplet impact characteristics on wettability-mediated hydrophobic surfaces.
• M.Tech in Thermal Engineering from NIT Silchar (2017-2019- CGPA 9.12/10, First Class with Distinction).
• B.Tech in Mechanical Engineering from KIIT University, Bhubaneswar (2012 – 2016- CGPA 8.58/10 First Class). 
• XII from R.L.S.Y. College, Nawada, Bihar. (2010–2012, Percentage: 69.40 %). 
•  X from L.Y.H. School, Nawada, Bihar. (2009 –2010, Percentage: 80.20 %).

Award & Recognition

• International Journals under SCI: 5
• Books/Book Chapter Published with ISBN: 05
• The American Society of Mechanical Engineers Members (ASME).
   

Research

International Journals

• A. Kumar, and M. Pathak, 2024, “Spreading and migration characteristics of impacting droplets on hybrid-wettability surfaces” Physics of Fluids, Vol. 36, 052106.
• A. Kumar, and M. Pathak, 2023, “Droplet impact on hydrophobic and superhydrophobic surfaces with the electrowetting” Chemical Engineering Science, Vol. 281, 119162.
• A. Kumar, I. Ahmad, and M. Pathak, 2023, “Droplet impact on a hydrophobic surface integrated with electrowetting technique” Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol. 656, 130423.
• A. Kumar, SK. Mehta, S. Pati and L. Baranyl, 2022, “Analysis of forced convective nanofluid flow through a wavy channel with linearly varying amplitude at the entrance” International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 33 No. 1, pp. 311-332.
• A. Kumar, SK. Mehta, S. Pati and M. Murugesan, 2023, “Analysis of thermal and hydraulic performances for flow in a wavy channel with varying amplitude”, Journal of Thermal Analysis and Calorimetry, Vol. 148, pp. 517-531.
• A. Kumar, and M. Pathak, “Dynamic phenomena of impacting ellipsoidal droplets on hydrophobic surfaces with different aspect ratios” (Under review).
• A. Kumar, and M. Pathak, “Spreading and bouncing phenomena of an impacting droplet with electrowetting technique” (Under review).
• P. Kumar, A. Phukan, A. Kumar, and M. Pathak, “Experimental Investigation on Microfluidic T-Junction-assisted Droplet Formation from SiO2 Nanofluid” Journal of Molecular Liquid (Revision submitted).

International Conferences

• A. Kumar, and M Pathak, 2021 “Dynamics of droplet impact at a low surface temperature”, Proceedings of the 48th National Conference on Fluid Mechanics and Fluid Power (FMFP)December 27-29, 2021, BITS Pilani, Pilani Campus, RJ, India.
• A. Kumar, and M Pathak, 2022, “Spreading Phenomena of a Water Droplet Impacting on a Hybrid-Wettability Surface”, Proceedings of the 9th International and 49th National Conference on Fluid Mechanics and Fluid Power (FMFP) December 14-16, 2022, IIT Roorkee, Roorkee-247667, Uttarakhand, India.
• A. Kumar, and M Pathak, 2023, “Rebound Suppression of Impacting Droplets On a Superhydrophobic Surface”, 4th International Conference on Recent Advancements in Mechanical Engineering, ICRAME 2023, India.
• A. Kumar, and M Pathak, 2023, “Migration and transport Phenomena of a Water Droplet Impacting on a Hybrid-Wettability Surface”, IHMTC, December 14-17, 2023, IIT Patna, Bihar, India.
• A. Kumar, SK. Mehta, and S. Pati, 2021 “Hydrodynamic and thermal transport characteristics for forced convective flow through a wavy channel with a linearly varying amplitude at the entrance region”, International Conference on Thermal Analysis and Energy System (ICTAES 2021), India.
• SK. Mehta, A. Kumar, and S. Pati, 2018 “Numerical analysis of thermo-hydraulic transport characteristics in wavy channel with porous wavy slab”, Proceedings of 7th International 45th National Conference on Fluid Mechanics and Fluid Power, IIT Bombay, Mumbai.
   

Area of Interest

• Droplet and bubble dynamics
• Micro-scale fluid flow and heat transfer
• Natural and mixed convection
• Evaporation and condensation
• Non-Newtonian fluid mechanics
• Computational fluid dynamics (CFD)
• Surface engineering