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Invariant manifolds in stratified turbulence

Sujovolsky, Nicolás Eduardo et al · American Physical Society · 2019

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Author / responsible party
Sujovolsky, Nicolás Eduardo et al
Publisher
American Physical Society
Year
2019
ISSN
2469-990X
ISSN
2469-990X
Language
English

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We present a reduced system of seven ordinary differential equations that captures the time evolution of spatial gradients of the velocity and the temperature in fluid elements of stratified turbulent flows. We show the existence of invariant manifolds (further reducing the system dimensionality), and compare the results with data stemming from direct numerical simulations of the full incompressible Boussinesq equations in the stably stratified case. Numerical results accumulate over the invariant manifolds of the reduced system, indicating the system lives at the brink of an instability. Finally, we study the stability of the reduced system, and show that it is compatible with recent observations in stratified turbulence of nonmonotonic dependence of intermittency with stratification. Fil: Sujovolsky, Nicolás Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física; Argentina Fil: Mindlin, Bernardo Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física; Argentina

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APA 7

Sujovolsky, N. E. E. A. (2019). Invariant manifolds in stratified turbulence. http://hdl.handle.net/11336/147952

MLA

Sujovolsky, Nicolás Eduardo et al. "Invariant manifolds in stratified turbulence." 2019. http://hdl.handle.net/11336/147952.

Chicago

Sujovolsky, Nicolás Eduardo et al. 2019. "Invariant manifolds in stratified turbulence.". http://hdl.handle.net/11336/147952.

Harvard

Sujovolsky, N. E. E. A. 2019, Invariant manifolds in stratified turbulence, American Physical Society, available at: http://hdl.handle.net/11336/147952 [Accessed 10 Aug. 2026].

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Title
Invariant manifolds in stratified turbulence
Author / contributors
Sujovolsky, Nicolás Eduardo et al
Publisher
American Physical Society
Publication year
2019
ISSN
2469-990X
ISSN
2469-990X
Language
English

Subjects

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ATMOSPHERIC FLOWS; GEOPHYSICS; MIXING; OCEANOGRAPHY; https://purl.org/becyt/ford/1.3; https://purl.org/becyt/ford/1
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