Saurabh S. Sawant

SaurabhSawant@lbl.gov

Addr: Center for Computational Sciences and Engineering,

Lawrence Berkeley National Laboratory,

1 Cyclotron Road,

Berkeley, CA 94720.

I am passionate about tackling complex scientific challenges that have a meaningful and far-reaching impact. Trained as a computational scientist, I thrive on collaborating with experts from varied backgrounds, including theoreticians and experimentalists, to solve challenging problems.

Central to most of my projects is high-performance computing (HPC). Over the past decade, I have honed my skills in developing scalable C++ software tailored for a wide range of scientific applications, spanning from hypersonics to nanoelectronics. My expertise encompasses both particle-based and matrix-based numerical methods, enabling me to address diverse problems.

In my current role as a postdoctoral scholar at the Lawrence Berkeley National Lab, I lead the development of an exascale electrostatic-quantum transport solver for modeling nanomaterials. Leveraging the nonequilibrium Green's function method & HPC, our code enables analysis of charge transport within intricate 3D structures. Prior to this endeavor, I worked on electrodynamic modeling of microelectronic circuits using Maxwell's equations.

I earned my M.S. and Ph.D. in Aerospace Engineering from the University of Illinois Urbana-Champaign, where I worked on modeling hypersonic flows. I led the development of massively scalable software for solving the Boltzmann Transport equation, using the Direct Simulation Monte Carlo (DSMC) method. Using this tool, I studied challenging problems at the intersection of statistical mechanics, hypersonics, and linear stability analysis, such as modeling 3D shock-wave/boundary-layer interactions.

Overview of my projects is provided on the Research page.

news

Jun 12, 2023	We recently presented our on-going code development for an exascale Electrostatic-Quantum Transport framework in the International Workshop on Computational Nanotechnology (IWCN).
Mar 05, 2023	At the APS March meeting in Las Vegas, presenting our on-going development efforts to model Carbon Nanotube Field Effect Transistors (CNTFETs).
Feb 15, 2023	Participated in the Fourth CS-Area Postdoc Symposium at LBNL. (see my talk)

select publications

On the synchronisation of three-dimensional shock layer and laminar separation bubble instabilities in hypersonic flow over a double wedge

Saurabh S. Sawant , V. Theofilis , and D.A. Levin

Journal of Fluid Mechanics, 2022

Bib HTML

@article{sawant_doublewedge_2022,
  title = {On the synchronisation of three-dimensional shock layer and laminar separation bubble instabilities in hypersonic flow over a double wedge},
  author = {Sawant, Saurabh S. and Theofilis, V. and Levin, D.A.},
  journal = {Journal of Fluid Mechanics},
  year = {2022},
  volume = {941},
  pages = {A7},
  doi = {10.1017/jfm.2022.276},
  url = {https://doi.org/10.1017/jfm.2022.276},
}

A kinetic approach to studying low-frequency molecular fluctuations in a one-dimensional shock

Saurabh S. Sawant , Deborah A. Levin , and Vassilios Theofilis

Physics of Fluids, Oct 2021

Bib HTML

@article{sawant_fluctuations_2021,
  title = {{A kinetic approach to studying low-frequency molecular fluctuations in a one-dimensional shock}},
  author = {Sawant, Saurabh S. and Levin, Deborah A. and Theofilis, Vassilios},
  journal = {Physics of Fluids},
  volume = {33},
  number = {10},
  pages = {104106},
  year = {2021},
  month = oct,
  issn = {1070-6631},
  doi = {10.1063/5.0065971},
  url = {https://doi.org/10.1063/5.0065971},
}