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pro vyhledávání: '"Chini, Gregory P."'
A two-dimensional extension of a recently developed formalism for slow-fast quasilinear (QL) systems subject to fast instabilities is derived. Prior work has demonstrated that the emergent dynamics of these systems is characterized by a slow evolutio
Externí odkaz:
http://arxiv.org/abs/2403.13971
Quantifying transport by strongly stratified turbulence in low Prandtl number ($Pr$) fluids is critically important for the development of better models for the structure and evolution of stellar and planetary interiors. Motivated by recent numerical
Externí odkaz:
http://arxiv.org/abs/2311.06424
The quadratic convection term in the incompressible Navier-Stokes equations is considered as a non-linear forcing to the linear operator, and it is studied in the Fourier domain through the analysis of interactions between triadically compatible wave
Externí odkaz:
http://arxiv.org/abs/2305.00095
Autor:
Chini, Gregory P., Michel, Guillaume, Julien, Keith, Rocha, Cesar B., Caulfield, Colm-cille P.
Publikováno v:
J. Fluid Mech. 933 (2022) A22
A multiscale reduced description of turbulent free shear flows in the presence of strong stabilizing density stratification is derived via asymptotic analysis of the Boussinesq equations in the simultaneous limits of small Froude and large Reynolds n
Externí odkaz:
http://arxiv.org/abs/2111.08806
Publikováno v:
J. Fluid Mech. Rapids 905, R4 (2020)
Steady two-dimensional Rayleigh--B\'enard convection between stress-free isothermal boundaries is studied via numerical computations. We explore properties of steady convective rolls with aspect ratios $\pi/5\le\Gamma\le4\pi$, where $\Gamma$ is the w
Externí odkaz:
http://arxiv.org/abs/2007.02530
Many exact coherent states (ECS) arising in wall-bounded shear flows have an asymptotic structure at extreme Reynolds number Re in which the effective Reynolds number governing the streak and roll dynamics is O(1). Consequently, these viscous ECS are
Externí odkaz:
http://arxiv.org/abs/2006.15801
Akademický článek
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Autor:
Michel, Guillaume, Chini, Gregory P.
Publikováno v:
Journal of Fluid Mechanics, vol. 858, pp. 536-564 (2018)
The interaction of an acoustic wave with a stratified fluid can drive strong streaming flows owing to the baroclinic production of fluctuating vorticity, as recently demonstrated by Chini et al. (J. Fluid Mech., 744, 2014, pp. 329). In the present in
Externí odkaz:
http://arxiv.org/abs/1812.03740
Autor:
Wen, Baole, Chini, Gregory P.
Direct numerical simulations (DNS) indicate that at large values of the Rayleigh number ($Ra$) convection in porous media self-organizes into narrowly-spaced columnar flows, with more complex spatiotemporal features being confined to boundary layers
Externí odkaz:
http://arxiv.org/abs/1803.03720
Exact coherent states of a linearly stable, plane parallel shear flow confined between stationary stress-free walls and driven by a sinusoidal body force (a flow first introduced by F. Waleffe, Phys. Fluids 9, 883 (1997)) are computed using equations
Externí odkaz:
http://arxiv.org/abs/1407.2980