Measurement of an eddy diffusivity for chaotic electroconvection using combined computational and experimental techniques Article Swipe
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Arunraj Balaji-Wright
,
Felix Stockmeier
,
R. Dunkel
,
Matthias Weßling
,
Ali Mani
·
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.1103/physrevfluids.9.023701
· OA: W4392098874
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.1103/physrevfluids.9.023701
· OA: W4392098874
The Poisson-Nernst-Planck-Stokes equations capture the chaotic dynamics of electroconvection accurately, but direct numerical simulation of electroconvection is prohibitively expensive. Furthermore, prediction of the mean fields via application of Reynolds averaging leads to a closure problem. In this work, we combine the macroscopic forcing method, a numerical technique for measurement of closure operators in Reynolds-averaged equations, with high-fidelity experimental data in order to determine a leading order closure for chaotic electroconvection. Simulations of the Reynolds-averaged equations using the leading order closure accurately predict experimental polarization curves.
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