Research & Innovation

Dr. Pratyush Kumar

SNSF Swiss Postdoctoral Fellow @ ETH Zürich

Advancing Computational Fluid Dynamics and Multiphase Flows through the integration of Physics-Informed Machine Learning and Agentic AI.

Dr. Pratyush Kumar

Research Expertise

Computational Fluid Dynamics

VOF, CFD-DEM, OpenFOAM

AI for Science

PINNs, Neural Operators, RAG

Heat Transfer

Packed Beds, Phase Change

Porous Media

Scaling Laws, Hydro-Thermal

Fusion Engineering

Tritium Transport, Pebble Beds

Non-Newtonian Flows

Viscoplastic, Viscoelastic

High Performance Computing

Euler Cluster, Parallel Solving

Applied Mathematics

Numerical Analysis, PDE Solvers

Current Research

Leidenfrost Droplet Dynamics

Machine learning for predictive modeling of Leidenfrost droplet dynamics using operator learning and Physics-Informed Neural Networks (PINNs).

ETH Zürich

ITER Test Blanket Modules

Numerical analysis of packed beds for fusion reactor blanket concepts using CFD-DEM and porous media approaches.

IIT Bombay

iteraSim RAG

Agentic AI framework for OpenFOAM using Retrieval-Augmented Generation and vector databases.

iteraSim

Featured Publication

Leidenfrost Droplet GIF
Physics of Fluids (2026)

Numerical study of bouncing Leidenfrost viscoplastic drops

This work investigates the complex rebound dynamics of viscoplastic droplets on Leidenfrost surfaces. By implementing a custom VOF solver in OpenFOAM, we captured the intricate vapour-liquid interactions and non-Newtonian rheological effects during high-temperature impacts.

1000+ Simulations
95% Validated
VOF Custom Solver
VOF-OpenFOAM Solver Non-Newtonian Rheology Interfacial Dynamics SNSF Postdoc Research
View Full Publications

Research Visualizations

Simulation Pipeline

01

High-Fidelity Meshing

Adaptive mesh refinement for complex interfaces using snappyHexMesh.

02

Multi-GPU Solving

Leveraging high-performance computing clusters (Euler @ ETH) for parallel solving.

03

AI Integration

Training PINNs and Operator Learning models on simulation datasets.

04

Data-Driven Insights

Automated feature extraction and hydro-thermal performance mapping.

8+
Journal Publications
3+
Conference Papers
SNSF
Postdoctoral Fellow
1000+
CFD Simulations