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Research Themes
Research Themes
Multiphase Flow
Multiphase Flow
Data-driven modelling of EHD assisted melting of phase change material. Sadhana, 2025
Droplet Velocity and Film Thickness Studies of an Elongated Taylor Droplet in a Microchannel and Characterization Using Machine Learning. Industrial & Engineering Chemistry Research, 2024, Industrial & Engineering Chemistry Research, 2025
When a bubble ascends in an electric field, vortices form due to variations in electrical conductivity and permittivity ratios. These vortices cause deformation. Understanding the bubble rise in quiescent medium under the influence of electric field. Clear vortices appear outside the bubble in both cases. Physics of Fluids, 2023, Physics of Fluids, 2024
Taylor drop rising in a non-Newtonian liquid. Silicone oils and Sodium Carboxymethyl Cellulose (CMC) solutions are used as dispersed and continuous phases, respectively. Industrial & Engineering Chemistry Research, 2023
Charge density distribution and streamlines. EHD assisted melting in a square cavity with a circular electrode was studied. A parametric study was conducted to investigate the influence of relative strengths of Coulomb and buoyancy forces. International Journal of Heat and Mass Transfer, 2022
Performance of pump under cavitation: The significance of secondary passages on the cavitation predictions, vortices, type of instabilities in the inducer and radial forces generated by the inducer and impeller are studied. This study also highlights the possibility of cavitation instability type manipulation by adding or removing the working fluid in a controlled manner in the inducer to reduce cavity volume as well as amplitude of pressure fluctuations. ThermoFluids Group, IMechE-Part A, 2023 - Winner of Donald J Groen Group Prize
Vorticity contours due to flow past elliptic cylinder. A numerical study was conducted to analyze the wake of an elliptic cylinder in the presence of fluid-fluid interface. ASME Journal of Fluids Engineering, 2020
Velocity and vapour fraction contours obtained using URANS-DCM model. A study was performed to compare the efficacy of different modelling approaches to predict turbulence and cavitation-induced phase changes. International Journal of Numerical Methods for Heat & Fluid Flow, 2022
Heat Transfer
Heat Transfer
Heat transfer enhancement in a mini-channel heat sink using EHD-induced active vortices. In this study, Onsager-Wien effect induced EHD conduction pumping is employed to disrupt the thermal boundary layer and enhance heat transfer. Applied Thermal Engineering, 2023
Streamlines and isotherms over a backward facing step for different types of stationary fin arrangement. The study compared heat transfer performance by different stationary fin arrangements with that by oscillating fin. International Journal of Heat and Mass Transfer, 2019
Turbulent shear stress and turbulent kinetic energy the center plane of square duct roughened with square (SQ) rib, Backward step (BS) rib, and Forward step (FS) rib . The aim of the study was to understand the effect of rotation on heat transfer of a square ribbed duct using LES. Numerical Heat Transfer – Part A Application, 2021
Vorticity contours for fluid flow past four elliptic cylinders. The study looked at influence of cylinder arrangement on heat transfer characteristics was investigated. Heat Transfer Engineering, 2021
Instantaneous and time-averaged isotherms from the control rod in unbound condition. In this study, the influence of the wall proximity on the heat transfer for flow past a cylinder with an upstream control rod was investigated and compared with that of an unbound condition. Numerical Heat Transfer – Part A Application, 2013
Turbulence Modeling
Turbulence Modeling
Turbulent viscosity predicted by different hybrid models for flow in a cyclone separator. The study explored three different hybrid LES/RANS approaches, namely, detached eddy simulation (DES), delayed detached eddy simulation (DDES), and improved delayed detached eddy simulation (IDDES) for flow in cyclone separator. ASME Journal of Fluids Engineering, 2022
Mean span-wise vorticity for uniform flow past two unequal sized square cylinders arranged side-by-side. LES technique was employed to simulate flow for different transverse gaps. International Journal of Computational Fluid Dynamics, 2009
Instantaneous vortical structures for flow past a square cylinder. Large eddy simulation of planar shear flow past a bluff body was studied. International Journal of Computational Fluid Dynamics, 2009
Time-averaged streamlines from non-linear k–ε, improved k–ω and DNS for flow over a wall mounted cube. The study compared the predictions by two equation turbulence models for complex flow structure over the cube.
Unsteady Aerodynamics
Unsteady Aerodynamics
Vorticity and pressure contours showing dipole vortex shedding for increasing stroke plane inclinations. A numerical study was conducted to understand the dipole vortex, its induced velocity and its effect on the vertical force production in the inclined stroke plane hovering of insects. Journal of Bionic Engineering, 2020
Lagrangian coherent structures along the span-wise axis of different wings. In this study, the aerodynamics of flapping wings subjected to gusty inflow was investigated. The Aeronautical Journal, 2019
Time evolution of vorticity and pressure contours for tandem flapping wings. The study focused on the ground effect on the aerodynamics of tandem flapping wings. Computers and Fluids, 2017
Instantaneous vorticity contours from a rotating cylinder. Laminar flow past a rotating cylinder near a plane wall was studied using immersed boundary method to understand the effects of wake-wall interactions. Journal of Ocean Engineering, 2017
Contours of vorticity from flapping wings. A 2D numerical study was conducted to investigate the unsteady aerodynamic forces acting on falpping insect wings. Computers and Fluids, 2010
Keynote/Invited lectures
Keynote/Invited lectures
Delivered a lecture on “Applications of scale resolving simulations” at SPARC Lecture series on Turbulence modelling frameworks: From theory to Engineering Practice, IIT Madras, January 2026.
Delivered keynote lecture on “EHD assisted melting and data-driven modelling” at 12th International and 52nd National FMFP meet, Nirma University, Ahmedabad, December 2025.
Delivered invited lecture on “Insect Aerodynamics”, AeSI-CB meeting, Chennai, November 2025.
Delivered a lecture on “Active vortex generation and enhanced heat transfer in a 3D mini-channel by Onsager–Wien effect”, at SPARC workshop Advances in micro/nano thermal transport for high-energy-density systems, NIT Calicut, June 2024.
Delivered an invited talk “Research work at CFD Lab-IIT Madras” at University of Texas, Dallas, USA, November 2018.
Delivered a lecture on “IBM and its applications”, at Symposium and workshop for analytical youth on Applied Mechanics (SWAYAM 2018), BITS Goa, June 2018.
Delivered a lecture on “IBM and its applications”, at Symposium and workshop for analytical youth on Applied Mechanics (SWAYAM 2018), BITS Goa, June 2018.
Delivered keynote lecture on “Ground effects on tandem flapping wings hovering” at 6th Intertnational and 43rd National FMFP meet, MNNIT Allahabad, Dec 2016.
Delivered an invited talk on “Aerodynamics of flapping insect wings in inclined stroke motion” at 13th AeSI CFD symposium, IISc Bangalore, August 2011.
Delivered an invited talk “Shear flow effects on flow past square cylinders” at Tokyo Polytechnic University, Japan, August 2009.
Research Collaborations
Research Collaborations
Name University
Professor Wataru Yamazaki Nagaoka University of Technology, Japan
Professor Subrat Das Deakin University, Australia
Professor Danesh K Tafti Department of Mechanical Engineering, Virginia Tech, USA
Professor Andre Benard Department of Mechanical Engineering, Michigan State University, USA.
Professor P. Nithiarasu Swansea University, UK
Professor Satoshi Yokojima Shizuoka University, Japan
Dr. Srinidhi N. G. University of Twente, Netherlands
Dr. Deepthi UWE Bristol, UK
Dr. Immanuvel Paul Newcastle University, UK
Dr. Y. Sudhakar IIT Goa
Professor YVSS Sanyasiraj Department of Mathematics, IITM
Professor Dhiman Chatterjee Department of Mechanical Engineering, IITM
Professor Ramkumar Department of Mechanical Engineering, IITM
Professor Srinivas Jayanthi Department of Chemical Engineering, IITM
Professor G. Saravana Kumar Department of Engineering Design, IITM
Professor Sarith P. Sathian Department of Applied Mechanics and Biomedical Engineering, IITM
Professor Anubhab Roy Department of Applied Mechanics and Biomedical Engineering, IITM
Professor K. Arul Prakash Department of Applied Mechanics and Biomedical Engineering, IITM
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