Onkar Sahni

30 papers A 2C 1Journal 22Unranked 5
YearRankTypeTitle / Venue / Authors
2025 J jnl
A block-structured nonuniform meshing technique for reducing the degrees-of-freedom in hybrid particle-in-cell plasma simulations.
Comput. Phys. Commun.
Md Fazlul Huq, Vignesh V. Srinivasaragavan, Onkar Sahni, Davide Curreli
2024 J jnl
Unstructured mesh tools for magnetically confined fusion system simulations.
Eng. Comput.
Mark S. Shephard, Jacob S. 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
2023 J jnl
A 3D unstructured mesh based particle tracking code for impurity transport simulation in fusion tokamaks.
Comput. Phys. Commun.
Dhyanjyoti D. Nath, Vignesh V. Srinivasaragavan, Timothy Reed Younkin, Gerrett Diamond, Cameron W. Smith, Alyssa Hayes, Mark S. Shephard, Onkar Sahni
2023 J jnl
hPIC2: A hardware-accelerated, hybrid particle-in-cell code for dynamic plasma-material interactions.
Comput. Phys. Commun.
Logan T. Meredith, M. Rezazadeh, Md Fazlul Huq, Jon. T. Drobny, Vignesh V. Srinivasaragavan, Onkar Sahni, Davide Curreli
2022 J jnl
A parallel interface tracking approach for evolving geometry problems.
Eng. Comput.
Fan Yang, Anirban Chandra, Yu Zhang, Saurabh Tendulkar, Rocco Nastasia, Assad A. Oberai, Mark S. Shephard, Onkar Sahni
2021 J jnl
CRIMSON: An open-source software framework for cardiovascular integrated modelling and simulation.
PLoS Comput. Biol.
Christopher J. Arthurs, Rostislav Khlebnikov, Alex Melville, Marija Marcan, Alberto Gómez, Desmond Dillon-Murphy, Federica Cuomo, Miguel Silva Vieira, Jonas Schollenberger, Sabrina R. Lynch, Christopher Tossas-Betancourt, Kritika Iyer, Sara Hopper, Elizabeth Livingston, Pouya Youssefi, Alia Noorani, Sabrina Ben Ahmed, Foeke J. H. Nauta, Theodorus M. J. van Bakel, Yunus Ahmed, Petrus A. J. van Bakel, Jonathan P. Mynard, Paolo Di Achille, Hamid Gharahi, Kevin D. Lau, Vasilina Filonova, Miquel Aguirre, Nitesh Nama, Nan Xiao, Seungik Baek, Krishna C. Garikipati, Onkar Sahni, David Nordsletten, C. Alberto Figueroa
2019 J jnl
A locally discontinuous ALE finite element formulation for compressible phase change problems.
J. Comput. Phys.
Yu Zhang, Anirban Chandra, Fan Yang, Ehsan Shams, Onkar Sahni, Mark S. Shephard, Assad A. Oberai
2018 J jnl
In-memory integration of existing software components for parallel adaptive unstructured mesh workflows.
Concurr. Comput. Pract. Exp.
Cameron W. Smith, Brian Granzow, Gerrett Diamond, Daniel Ibanez, Onkar Sahni, Kenneth E. Jansen, Mark S. Shephard
2017 J jnl
Hammerstein-Wiener based reduced-order model for vortex-induced non-linear fluid-structure interaction.
Eng. Comput.
Daniele Gallardo, Onkar Sahni, Riccardo Bevilacqua
2017 J jnl
Parallel anisotropic mesh adaptation with boundary layers for automated viscous flow simulations.
Eng. Comput.
Onkar Sahni, Aleksandr Ovcharenko, Kedar Chitale, Kenneth E. Jansen, Mark S. Shephard
2016 — conf
In-memory Integration of Existing Software Components for Parallel Adaptive Unstructured Mesh Workflows.
XSEDE
Cameron W. Smith, Brian Granzow, Dan Ibanez, Onkar Sahni, Kenneth E. Jansen, Mark S. Shephard
2015 — conf
Enabling HPC simulation workflows for complex industrial flow problems.
XSEDE
Cameron W. Smith, Steven Tran, Onkar Sahni, Farhad Behafarid, Mark S. Shephard, Raminderjeet Singh
2014 J jnl
Scalable Implicit Flow Solver for Realistic Wing Simulations with Flow Control.
Comput. Sci. Eng.
Michel E. Rasquin, Cameron W. Smith, Kedar Chitale, E. Seegyoung Seol, Benjamin A. Matthews, Jeffrey L. Martin, Onkar Sahni, Raymond M. Loy, Mark S. Shephard, Kenneth E. Jansen
2014 J jnl
Variational Multiscale Analysis: The Fine-Scale Green's Function for Stochastic Partial Differential Equations.
SIAM/ASA J. Uncertain. Quantification
Jayanth Jagalur-Mohan, Onkar Sahni, Alireza Doostan, Assad A. Oberai
2013 J jnl
Adjoint consistency analysis of residual-based variational multiscale methods.
J. Comput. Phys.
Jason E. Hicken, J. Li, Onkar Sahni, Assad A. Oberai
2012 J jnl
Neighborhood communication paradigm to increase scalability in large-scale dynamic scientific applications.
Parallel Comput.
Aleksandr Ovcharenko, Daniel Ibanez, Fabien Delalondre, Onkar Sahni, Kenneth E. Jansen, Christopher D. Carothers, Mark S. Shephard
2012 — conf
Parallel Adaptive Boundary Layer Meshing for CFD Analysis.
IMR
Aleksandr Ovcharenko, Kedar Chitale, Onkar Sahni, Kenneth E. Jansen, Mark S. Shephard
2012 J jnl
Tools to support mesh adaptation on massively parallel computers.
Eng. Comput.
Min Zhou, Ting Xie, E. Seegyoung Seol, Mark S. Shephard, Onkar Sahni, Kenneth E. Jansen
2012 J jnl
Unstructured mesh partition improvement for implicit finite element at extreme scale.
J. Supercomput.
Min Zhou, Onkar Sahni, Ting Xie, Mark S. Shephard, Kenneth E. Jansen
2011 — conf
Electronic poster: co-visualization of full data and in situ data extracts from unstructured grid cfd at 160k cores.
SC Companion
Michel E. Rasquin, Patrick Marion, Venkatram Vishwanath, Benjamin A. Matthews, Mark Hereld, Kenneth E. Jansen, Raymond M. Loy, Andrew C. Bauer, Min Zhou, Onkar Sahni, Jing Fu, Ning Liu, Christopher D. Carothers, Mark S. Shephard, Michael E. Papka, Kalyan Kumaran, Berk Geveci
2010 J jnl
Adjacency-based data reordering algorithm for acceleration of finite element computations.
Sci. Program.
Min Zhou, Onkar Sahni, Mark S. Shephard, Christopher D. Carothers, Kenneth E. Jansen
2010 J jnl
Controlling Unstructured Mesh Partitions for Massively Parallel Simulations.
SIAM J. Sci. Comput.
Min Zhou, Onkar Sahni, Karen D. Devine, Mark S. Shephard, Kenneth E. Jansen
2010 C conf
Low-order nonlinear models for active flow control of a low L/D inlet duct.
ACC
Xiaoqing Ge, William Gressick, John T. Wen, Onkar Sahni, Kenneth E. Jansen
2010 J jnl
Massively Parallel I/O for Partitioned Solver Systems.
Parallel Process. Lett.
Ning Liu, Jing Fu, Christopher D. Carothers, Onkar Sahni, Kenneth E. Jansen, Mark S. Shephard
2010 — conf
Scalable parallel I/O alternatives for massively parallel partitioned solver systems.
IPDPS Workshops
Jing Fu, Ning Liu, Onkar Sahni, Kenneth E. Jansen, Mark S. Shephard, Christopher D. Carothers
2009 J jnl
Automated adaptive cardiovascular flow simulations.
Eng. Comput.
Onkar Sahni, Kenneth E. Jansen, Charles A. Taylor, Mark S. Shephard
2009 A conf
Scalable implicit finite element solver for massively parallel processing with demonstration to 160K cores.
SC
Onkar Sahni, Min Zhou, Mark S. Shephard, Kenneth E. Jansen
2009 J jnl
Strong scaling analysis of a parallel, unstructured, implicit solver and the influence of the operating system interference.
Sci. Program.
Onkar Sahni, Christopher D. Carothers, Mark S. Shephard, Kenneth E. Jansen
2009 A conf
Subdomain communication to increase scalability in large-scale scientific applications.
ICS
Aleksandr Ovcharenko, Onkar Sahni, Christopher D. Carothers, Kenneth E. Jansen, Mark S. Shephard
2008 J jnl
Adaptive boundary layer meshing for viscous flow simulations.
Eng. Comput.
Onkar Sahni, Kenneth E. Jansen, Mark S. Shephard, Charles A. Taylor, Mark W. Beall