Susan Kurien

Los Alamos National Laboratory

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Journal article Open access Peer reviewed

Dynamic calibration of differential equations using machine learning, with application to turbulence models

by Ismael Djibrilla Boureima, Vitaliy Gyrya, Juan Antonio Saenz, Susan Kurien and Marianne M. Francois

Published 05/15/2022

Journal of Computational Physics, 457, 110924

Journal article Open access Peer reviewed

The local wavenumber model for computation of turbulent mixing

by Susan Kurien and Nairita Pal

Published 03/21/2022

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 380, 2219

Journal article Open access Peer reviewed

Local wave-number model for inhomogeneous two-fluid mixing

by Nairita Pal, Ismael Djibrilla Boureima, Susan Kurien, P. Ramaprabhu and Andrew Lawrie

Published 08/2021

Physical Review E, 104, 2, 025105

Journal article Open access Peer reviewed

Local wave-number model for inhomogeneous two-fluid mixing

by Nairita Pal, Ismael Djibrilla Boureima, Susan Kurien, P. Ramaprabhu and Andrew Lawrie

Published 08/2021

Physical Review E, 104, 2, 025105

Journal article Open access Peer reviewed

Extracting a mixing parameter from 2D radiographic imaging of variable-density turbulent flow

by Susan Kurien, Forrest William Doss, Daniel Livescu and Kirk Adler Flippo

Published 04/2020

Physica D: Nonlinear Phenomena, 405, 132354

Journal article Peer reviewed

Characteristic length scales of strongly rotating Boussinesq flow in variable-aspect-ratio domains

by X. M. Zhai and Susan Kurien

Published 12/10/2018

Journal of fluid mechanics, 856, 397 - 425

We quantify the variability of the characteristic length scales of isotropically forced Boussinesq flows with stratification and frame rotation, as functions of the ratio $N/f$ of the Brunt–Väisälä frequency to the Coriolis frequency. The parameter ranges $01$ , the vortical-mode aspect ratio $\unicode[STIX]{x1D6FF}_{0}$ asymptotes to a scaling of ${\sim}(N/f)^{-1}$ , in agreement with quasi-geostrophic estimates. In contrast, the $\unicode[STIX]{x1D6FF}_{0}$ in tall-aspect-ratio domain flows yields a decay rate of at most ${\sim}(N/f)^{-1/2}$ after large-scale filtering. Flows with nonlinear potential vorticity display consistently weaker dependence of the characteristic scales on $N/f$ than the corresponding ones with linear potential vorticity. The wave-mode aspect ratios for all flows are essentially independent of $N/f$ . We highlight the differences of these flow structure scalings relative to those expected for quasi-geostrophic flows, and those observed in strongly stratified, non-quasi-geostrophic flows.

Journal article Open access

Two-point spectral model for variable-density homogeneous turbulence

by Nairita Pal, Susan Kurien, Timothy Truman Clark, Denis Aslangil and Daniel Livescu

Published 12/2018

Physical Review Fluids, 3, 12, 124608

Journal article Open access Peer reviewed

Late-time mixing and turbulent behavior in high-energy-density shear experiments at high Atwood numbers

by Kirk Adler Flippo, Forrest William Doss, Elizabeth Catherine Merritt, Barbara Gloria DeVolder, Carlos Di Stefano, John L. Kline, Channing Huntington, Sabrina Nagel, Lynn Kot and Theodore Sonne Perry ... (22 authors)

Published 05/2018

Physics of Plasmas, 25, 5, 56315

American Physical Society Division of Plasma Physicis, 10/23/2017–10/27/2017, Milwaukee, Wisconsin, United States

Journal article Open access Peer reviewed

Generation of anisotropy in turbulent flows subjected to rapid distortion

by Timothy Truman Clark, Susan Kurien, Robert Rubinstein and Charles Zemach

Published 01/2018

Physical Review E, 97, 1, 013112

Journal article Open access Peer reviewed

Leith diffusion model for homogeneous anisotropic turbulence

by Robert Rubinstein, Timothy T Clark and Susan Kurien

Published 06/2017

Computers & Fluids, 151, 108-114

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Susan Kurien

Los Alamos National Laboratory

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