Onkar Sahni

Mechanical, Aerospace and Nuclear Engineering

Research

Other Focus Areas

Fluid Mechanics, Computational Fluid Dynamics, Turbulence Simulations, Computational Mechanics, High-Performance and Parallel Computing

Publications

The following is a selection of recent publications in Scopus. Onkar Sahni has 99 indexed publications in the subjects of Engineering, Computer Science, Mathematics.

A GPU-Accelerated 3D Unstructured Mesh Based Particle Tracking Code for Multi-Species Impurity Transport Simulation in Fusion Tokamaks
Dhyanjyoti D. Nath, Timothy R. Younkin, Jerome Guterl, Mark S. Shephard, Onkar Sahni
Contributions to Plasma Physics
, 2025
.
A block-structured nonuniform meshing technique for reducing the degrees-of-freedom in hybrid particle-in-cell plasma simulations
M. F. Huq, V. V. Srinivasaragavan, O. Sahni, D. Curreli
Computer Physics Communications
, 313
, 2025
.
Robust and Automatic Shock Detection and Processing in High-speed Flow Simulations
Aiden Woodruff, Onkar Sahni
AIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2025
, 2025
.
In-memory Parallel Anisotropic Mesh Adaptation for Hypersonic Problems with Evolving Geometry
Mikiel Gica, Aiden Woodruff, Cameron S. Brown, Giovanni Salazar, Onkar Sahni
AIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2025
, 2025
.
AI/ML-assisted Robust Shock Processing for CFD Applications
Onkar Sahni, Sharat Val, Aiden Woodruff, M. Arshad Zahangir Chowdhury
AIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2025
, 2025
.
In-memory Parallel Anisotropic Mesh Adaptation for Unsteady Hypersonic Problems
Onkar Sahni, Cameron S. Brown, Mikiel Gica, Sharanjeet Kaur, Giovanni Salazar, Patrick Keistler
AIAA Aviation Forum and ASCEND, 2024
, 2024
.
Unstructured mesh tools for magnetically confined fusion system simulations
Mark S. Shephard, Jacob Merson, Onkar Sahni, Angel E. Castillo, Aditya Y. Joshi, Dhyanjyoti D. Nath, Usman Riaz, E. Seegyoung Seol, Cameron W. Smith, Chonglin Zhang, Mark W. Beall, Ottmar Klaas, Rocco Nastasia, Saurabh Tendulkar
Engineering with Computers
, 40
, 2024
, pp.3319-3336
.
A 3D unstructured mesh based particle tracking code for impurity transport simulation in fusion tokamaks
Dhyanjyoti D. Nath, Vignesh V. Srinivasaragavan, Timothy R. Younkin, Gerrett Diamond, Cameron W. Smith, Alyssa Hayes, Mark S. Shephard, Onkar Sahni
Computer Physics Communications
, 292
, 2023
.
A dynamic variational multiscale method on unstructured meshes for stationary transport problems
Zelu Xu, Onkar Sahni
International Journal for Numerical Methods in Fluids
, 95
, 2023
, pp.1117-1147
.
hPIC2: A hardware-accelerated, hybrid particle-in-cell code for dynamic plasma-material interactions
L. T. Meredith, M. Rezazadeh, M. F. Huq, J. Drobny, V. V. Srinivasaragavan, O. Sahni, D. Curreli
Computer Physics Communications
, 283
, 2023
.

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