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 utlize these implementations to predict flow and heat transfer in interesting engineering and biological problems including flapping wings, casting, moving fins, deformable arteries etc.
My another area of interest is on development of micro and small rural industrial clusters. I have worked as design expert with NID, Ahmadabad on development of rice milling machineries.Presently, I am working with Bihar Government and TIFAC, DST on development of rural industrial clusters in Bihar and West Bengal.
An Efficient Immersed Boundary Algorithm for Simulation of Flows in Curved and Moving Geometries by Kumar, M., and Roy, S., Computers and Fluids 129 159-178 (2016)
A Sharp Interface Immersed Boundary Method for Moving Geometries with Mass Conservation and Smooth Pressure Variation by Kumar, M., and Roy, S., Computers and Fluids 137 15-35 (2016)
Immersed Boundary Method Simulation of Natural Convection over Fixed and Oscillating Cylinders in Square Enclosure by Kumar, M., and Roy, S., International Journal of Heat and Fluid Flow In press - (2016)
Numerical Simulation of Continuous Casting of Steel Alloy for Different Cooling Ambiences and Casting Speeds using Immersed Boundary Method by Kumar, M., Roy, S., and Panda, SS Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 0954405415596140 - (2015)
Demonstration of GPGPU Accelerated Computational Fluid Dynamics Calculations by S., Kumar, M., and Roy, S Intelligent Computing and Applications 519-525 (2015)
Effect of Impeller Speed Perturbation in a Rushton Impeller Stirred Tank by Roy S., Acharya S. Journal of Fluids Engineering 134 - (2012)
Scalar Mixing in a Turbulent Stirred Tank with Pitched Blade Turbine: Role of Impeller Speed Perturbation by Roy, S., and Achary, S. Chemical Engineering Research and Deisgn 19 884-898 (2012)
Evolving Perturbed Stirred Tank Flows with Amplitude and Mode-Shape Variations by Roy, S., and Achary, S. Chemical Engineering Science 66 5703-5722 (2011)
Flow Structure and the Effect of Macro-instabilities in a Pitched-blade Stirred Tank by Roy, S., Acharya, S., and Cloeter, M. Chemical Engineering Science 65 3009-3024 (2010)
Simulation of Laminar and Turbulent Impeller Stirred Tanks using Immersed Boundary Method and Large Eddy Simulation Technique in Multi-block Curvilinear Geometries by Tyagi, M., Roy, S., Acharya, S., and Hervey, A.D Chemical Engineering Science 62 1351-1363 (2007)
Numerical Investigation or Dynamics of Blood Clots in Diseased Carotid Artery ISIRD, SRIC
Area of Research: Fluid Dynamics
Piru Mohan Khan
Area of Research: Numerical study of arterial flows