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Fluctuating hydrodynamics of multispecies nonreactive mixtures

Journal Article · · Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
 [1];  [2];  [3];  [1]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Computational Research Division
  2. San Jose State Univ., CA (United States). Dept. of Physics and Astronomy
  3. New York Univ. (NYU), NY (United States). Courant Inst. of Mathematical Sciences

In this study we discuss the formulation of the fluctuating Navier-Stokes equations for multispecies, nonreactive fluids. In particular, we establish a form suitable for numerical solution of the resulting stochastic partial differential equations. An accurate and efficient numerical scheme, based on our previous methods for single species and binary mixtures, is presented and tested at equilibrium as well as for a variety of nonequilibrium problems. These include the study of giant nonequilibrium concentration fluctuations in a ternary mixture in the presence of a diffusion barrier, the triggering of a Rayleigh-Taylor instability by diffusion in a four-species mixture, as well as reverse diffusion in a ternary mixture. Finally, good agreement with theory and experiment demonstrates that the formulation is robust and can serve as a useful tool in the study of thermal fluctuations for multispecies fluids.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR) (SC-21); National Science Foundation (NSF) (United States)
Grant/Contract Number:
AC02-05CH11231; SC0008271
OSTI ID:
1407226
Journal Information:
Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics, Journal Name: Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics Journal Issue: 1 Vol. 89; ISSN 1539-3755
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (10)

Low Mach number fluctuating hydrodynamics of multispecies liquid mixtures journal March 2015
Modeling nanoscale hydrodynamics by smoothed dissipative particle dynamics journal May 2015
Fluctuating hydrodynamics of multi-species reactive mixtures journal June 2015
Stochastic simulation of reaction-diffusion systems: A fluctuating-hydrodynamics approach journal March 2017
Fluctuating hydrodynamics of reactive liquid mixtures journal August 2018
On the suppression and distortion of non-equilibrium fluctuations by transpiration journal May 2019
Non-equilibrium concentration fluctuations in binary liquids with realistic boundary conditions journal September 2015
Low Mach Number Fluctuating Hydrodynamics of Multispecies Liquid Mixtures text January 2014
Non-equilibrium concentration fluctuations in binary liquids with realistic boundary conditions text January 2015
On the Suppression and Distortion of Non-Equilibrium Fluctuations by Transpiration text January 2019

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