Simulation Visualizations
Below are visualizations from my simulations of fluid dynamics and instability phenomena. Each simulation represents a different aspect of my research.
Rayleigh-Taylor Instability
Rayleigh-Taylor Instability (2024)
This simulation showcases the Rayleigh-Taylor instability Using FLASH code (Lagrangian-Eulerian approach). A phenomenon that occurs when a denser gas (mixture of graphite+Hydrogen)is accelerated into a Hydrogen gas under low-pressure conditions, causing the interface to become unstable. In this case, the Atwood number is 0.1, and the particle diameter is 0.05 μm. The result helps visualize multiphase mixing under weak instability.
Mixing Two Fluids
Mixing Two Fluids
Simulation of two immiscible liquids under gravity using OpenFoam. The density difference (Atwood number ≃ 0.05) drives interfacial instability that evolves into Kelvin–Helmholtz vortices and mixing.
Mixing Two Fluids-RTI
3D RTI
A diagonal slice through 3D simulation of Rayleigh–Taylor instability using OpenFOAM at atmospheric conditions. The initial interface follows a saddle-shaped perturbation (yint = h0 + 2A[sin(2πx/λx − π/2) + sin(2πz/λz − π/2)]), introducing symmetric sinusoidal waves along both x and z directions. Even at a low Atwood number, water penetrates into sludge (ρ ≈ 0.990 g/m³), forming complex 3D bubble–spike structures. The second stage captures the late-time evolution, where rising bubbles and descending spikes interact and roll up into fully developed vortical structures.
LBM PIC Simulation
Lid-driven cavity using lattice Boltzmann method (2021)
This simulation demonstrates a classic lid-driven cavity flow problem, where fluid inside a square cavity is driven by the motion of the top boundary (lid) while the other walls remain stationary. The flow develops primary and secondary vortices due to the shear forces generated by the moving lid. The simulation was performed using the Lattice Boltzmann Method (LBM), which is well-suited for simulating incompressible flows in confined geometries.
Membrane of PEM fuel cell
Flow in the Gas Diffusion Layer (PEM Fuel Cell)
This simulation visualizes pore-scale gas transport in the GDL of a PEM fuel cell. A Shan-Chen multiphase LBM model was used to capture water vapor interaction with the porous carbon material.
PIC Euler Simulation
PIC Coupled with Compressible Euler (2022)
This simulation shows a Particle-in-Cell (PIC) method coupled with the compressible Euler equations in the deal.II C++ finite element library. It advances massless tracer tracking with explicit integration and momentum feedback.

Reference: deal.II step-68 Tutorial
Vorticity Field Simulation
Vorticity Field in a 2D Incompressible Flow (2025)
Vorticity field in a 2D incompressible flow (Re = 250, U = 1 cm/s) around several stationary obstacles, simulated using Julia with GPU acceleration (CUDA). The circular bodies induce complex vortex shedding and wake interactions as the uniform flow develops from left to right. Color contours represent vorticity, with blue and red indicating regions of clockwise and counterclockwise rotation, respectively.
Engine Cylinder Simulation
Engine Cylinder Design and Analysis (2015)
A piston-cylinder assembly of the Mercedes-Benz OM355 diesel engine was modeled in SOLIDWORKS to analyze shear stress, deformation, and heat transfer due to combustion. This CAD model was used to evaluate mechanical integrity under thermal and pressure loads.