Aritra Roy
Hello! I’m Aritra Roy from Kolkata, India. I completed my schooling at Calcutta Boys' School, Kolkata. From my high school days, I have had a passion for solving math problems, particularly in geometry and calculus. To me, every math problem feels like a puzzle, a maze waiting to be solved using a variety of numerical techniques. I strive to discover the most compact and elegant solution, as I believe that simplicity often holds the key to brilliance.
Currently, I am pursuing a bachelor’s degree in Mechanical Engineering at IIT (ISM) Dhanbad, India. I am enrolled in a unique five-year dual-major program, where my primary focus is Mining Machinery Engineering—a specialized branch of mechanical engineering—alongside my second major in Mechanical Engineering. This program has provided me the incredible opportunity to go beyond traditional mechanical engineering and delve into the fascinating world of heavy machinery used in mining industries. I have explored their design, functionality, and maintenance, gaining a broader perspective of engineering applications in industrial settings. My academic journey has been enriched by several research experiences. My undergraduate thesis was guided by Prof. Sandipan Kumar Das [Link], and I also undertook a short-term research internship under Prof kabilan B. [Link] and Prof. Ajay Bhandari [Link] at the Biofluid Mechanics Lab at IIT (ISM) Dhanbad. Additionally, I was fortunate to be selected as an S. N. Bhatt Fellow at ICTS-TIFR, where I spent two months as an undergraduate researcher under the guidance of Prof. Rama Govindarajan [Link]. During this fellowship, I worked on performing DNS (Direct Numerical Simulation) of microplastics in oceanic flows, a project that combined my interests in fluid mechanics and computational modeling.
I think the best way to master fluid physics is to have extensive discussion and put it in a mathematical framework. For me I immensely look upto to late office hours discussions at 107 (IIT Dhanbad) & H203 (TIFR) ! I also like writing computational blogs on completely new numerical techniques and explaining them in lucid manner on medium. Please feel free to reach out in case you want to discuss about my works or want to do a collaborative work. Kindly drop me an email ! i will try to respond asap!
In my spare time, I enjoy playing chess, solving riddles and reading crime thriller novels.
Email / Google Scholar / LinkedIn / Medium / GitHub
Research
Welcome to my research world, where I delve into innovative computational frameworks to address complex challenges in engineering and fundamental science. My work focuses on meshless numerical methods like Boundary Element Method (BEM), Lattice Boltzmann method (LBM) and Smoothed Particle Hydrodynamics (SPH) to solve fluid flow and heat transfer problems with precision. I explore active fluid control using electromagnetic fields, aiming to revolutionize applications in microfluidics and lab-on-chip ideology. Leveraging unsupervised neural networks, I develop mixed variable approache for solving partial differential equations (NS), pushing the boundaries of computational efficiency. Additionally, I am passionate about sustainable energy generation, with a focus on using hydrogen as fuel, employing ammonia as a carrier to pave the way for a greener future. Join me on this journey of discovery and innovation!
A computational analysis of flow dynamics and heat transfer in a wavy patterned channel using Physics Informed Neural Networks
Aritra Roy, Ayan Mukherjee, Balbir Prasad, Ameeya Kumar Nayak. [Published in Physics of Fluids, 2025][arxiv]
This project is centered to explore wavy channel flows, significant in diverse applications, by solving steady-state incompressible Navier-Stokes equations using a physics-informed neural network (PINN). Symmetric and asymmetric wavy channels, including in-phase and out-phase wall shifts, are analyzed to model arterial structures. Key flow characteristics—velocity, pressure drop, and wall shear stress—are computed, with PINN results validated against CFD for high accuracy. The study also examines flow separation and recirculation in asymmetric channels. Additionally, heat transfer characteristics using both uniform and non-uniform boundary conditions were also analyzed.
Prospects of energy-efficient power generation system with ammonia as hydrogen carrier
Aritra Roy, Soumyajit Sengupta, Arun Kumar Samanta, PVSS Likhith, Sandipan Kumar Das. [Published in International Journal of Hydrogen Energy, 2024][arxiv]
This research project investigates a novel approach using ammonia as a hydrogen carrier, which is decomposed to generate hydrogen for combustion, producing steam to power turbines. The process is simulated in ASPEN Plus, involving ammonia compression, decomposition in a fluidized bed reactor (FBR), product compression, hydrogen-air combustion, and power extraction via turbines. The study emphasizes the impact of parameters such as pressure, temperature, catalyst loading in the FBR, and air flowrate on the performance of individual components and overall system efficiency.
Endovascular coil embolization using magnetic needle navigation
Aritra Roy, Ajay Bhandari [Link][video]
Endovascular coil embolization is a technique that prevents premature rapture of the internal carotid artery (ICA). In order to facilitate the surgery along with maintaining the flow of blood in ICA, we have proposed a magnetically navigable coil made of PDMS resin and hydrogel, flexible enough for smooth navigation and minimizing friction. This project was awarded Piyush Dutta Innovation award by NVCTI, IIT(ISM) Dhanbad.
A novel numerical implementation of boundary element method for fluid flow problems
Aritra Roy, Sandipan Kumar Das. [arxiv]
In this project, a novel implementation of boundary only discretization technique has been used to solve the non linear problems of fluid mechanics, whose Green's function doesnt exist or is very tedious to evaluate has been simulated to the desired degree of accuracy. This is inspired by Moin et. al. ideology of fractional step method.
A density stratified DNS simulation of microplastics in geophysical turbulence conditions prevailing in oceans
Aritra Roy, Rama Govindarajan. [ongoing]
Accolades and Honors
