Sayan Adhikari

Research

Four threads run through my work. The first three are what I do at IFE today; the fourth is where the methods came from.

Digital twins for the process industry

Live models of real production lines. I combine physics-based simulation with sensor data so operators can see what is happening inside a die, a mould or a casting line, and act on it.

  • Data infrastructure for acquisition and monitoring with Node-RED, InfluxDB and Grafana
  • Digital twin of an extrusion die for polymer solar thermal collectors
  • Machine learning on real-time data for glass reinforced polymer extrusion
  • Applications in aluminium, battery and solar manufacturing

Related publications

Multiphysics and finite element modelling

Thermo-mechanical and flow models of material processing, built to run inside industrial projects rather than only in papers.

  • FEM simulation of continuous casting of aluminium for defect prediction
  • Casting and rolling chain models for grid conductors with high scrap content
  • Reduced order models and physics-informed neural network surrogates
  • CFD with OpenFOAM, meshing with Gmsh, post-processing with ParaView

Agentic AI for simulation

Teams of LLM agents that read a problem in plain language, build the mesh, run the solver and check the result, backed by a knowledge graph of the physics.

  • PDE-Agents: an LLM-orchestrated multi-agent framework for automated FEM
  • Simulation, process-data and sensor-fusion agents with a shared ontology
  • Explainable operator interfaces for closed-loop process control
  • Benchmarking open-weight models for reliable tool calling

Related publications

Plasma and space physics

Where I started: kinetic and fluid simulation of plasma sheaths, probes and spacecraft charging, from laboratory devices to the ionosphere and the Moon.

  • Langmuir probe modelling for the Rashid rover of the Emirates Lunar Mission
  • Spacecraft charging and probe I-V characteristics in the polar ionosphere
  • Magnetised plasma sheaths, dusty plasma and beam-plasma instabilities
  • Ion dynamics in inertial electrostatic confinement fusion devices

Space plasma papers Sheath physics papers

Space missions I contributed to

NanoMagSat

A nanosatellite constellation for mapping the geomagnetic field and ionospheric environment. I worked on simulations of the multi-needle Langmuir probe design.

Daedalus

A proposed low-flying spacecraft to explore the lower thermosphere and ionosphere, where collisions between charged and neutral particles change how probes respond.

Codes

Most of my research runs on code I wrote or helped extend. These are the ones that are public.

  • PDE-AgentsMulti-agent LLM framework for automated finite element simulations
  • PPDynPlasma particle dynamics, a molecular dynamics code for complex plasma
  • PICSPParticle-in-cell simulation of plasma
  • IDFMIon dynamics in magnetised sheaths using fluid modelling
  • deepRadiationNeural network models for plasma radiation
  • DSMCPy, deepDiffusionDirect simulation Monte Carlo and neural diffusion solvers
  • Project RaspberryRaspberry Pi projects for science outreach

I have also worked with the kinetic codes PTetra, PUNC++, PINC, XOOPIC, Gkeyll, OpenFOAM.