My primary area of work is computational fluid dynamics (CFD). I have been working on several applications involving heat transfer, mixing and turbulence. I also investigate CFD problems involving high computational cost and try to propose high performance computing (HPC) methodologies to address them using multi-core clusters and GPGPU platforms. In last few years, I have been mostly involved in addressing flow problems with moving boundaries. My group works on developing immersed boundary method (IBM) based computationally efficient algorithms to solve moving boundary problems and we have utilized these implementations to predict flow and heat transfer in interesting engineering and biological problems including flapping wings, casting, moving fins, deformable arteries etc.

All Publications

Numerical simulation of flow of a shear-thinning Carreau fluid over a transversely oscillating cylinder by Alam M.I., Raj A., Khan P.M., Kumar S., Roy S. Journal of Fluid Mechanics 921 - (2021)
Computational analysis of perforation effect on the thermo-hydraulic performance of micro pin-fin heat sink by Gupta D., Saha P., Roy S. International Journal of Thermal Sciences 163 - (2021)
Numerical prediction of solidified shell thicknesses obtained in continuous casting with different billet shapes by Bhole S.A., Kumar M., Roy S., Panda S.S. Numerical Heat Transfer; Part A: Applications 77 302-316 (2020)
Effect of pulse rate variation on blood flow through axisymmetric and asymmetric stenotic artery models by Sood T., Roy S., Pathak M. Mathematical Biosciences 298 1-18 (2018)

Completed Projects

Principal Investigator

CFD Optimization of Topology and Surface Texture for Wings of Butterfly-Mimetic Flyer Aeronautics R and D Board
Nodal Center in HPC and AI at IIT Kharagpur under National Supercomputing Mission (NSM) Centre for Development of Advanced Computing
Workshops for NSM Nodal Centre Centre for Development of Advanced Computing