Publications▾ Expand All Digests ▾

D. Zhao, H. Aluie

The Inviscid Criterion for Decomposing Scales.

(submitted) ▾ Digest ▾

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M. Buzzicotti, H. Aluie, L. Biferale, M. Linkmann

Energy transfer in turbulence under rotation.

(submitted) ▾ Digest ▾

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H. Zhang, R. Betti, V. Gopalaswamy, R. Yan, H. Aluie

Nonlinear excitation of the ablative Rayleigh-Taylor instability for all wave numbers.

Physical Review E, 97, 011203(R) (2018) ▾ Digest ▾

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M. Buzzicotti, M. Linkmann, H. Aluie, L. Biferale, J. Brasseur, C. Meneveau

Effect of filter type on the statistics of energy transfer between resolved and subfilter scales from a-priori analysis of direct numerical simulations of isotropic turbulence.

Journal of Turbulence, 19(2), 167-197 (2018) ▾ Digest ▾

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H. Aluie, M. Hecht, G. Vallis

Mapping the Energy Cascade in the North Atlantic Ocean: The Coarse-graining Approach.

Journal of Physical Oceanography, 48 (2), 225-244 (2018) ▾ Digest ▾

This paper is a culmination of interdisciplinary work spanning applied mathematics, physical oceanography, and turbulence. What started off as a seemingly straightforward application of methods from turbulence to oceanic data turned out to require new theoretical developments in applied mathematics, considerable effort in numerical implementation, and a few years to finish. I believe this was a worthy investment to provide tools that will hopefully prove valuable in atmospheric and oceanic dynamics, in climate science, and also in general flows with spherical geometry such as imploding targets in inertial confinement fusion power.

H. Aluie

Convolutions On The Sphere: Commuting With Differential Operators.

(submitted) ▾ Digest ▾

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H. Aluie

Coarse-Grained Incompressible Magnetohydrodynamics: analyzing the turbulent cascades. (Invited paper)

New Journal of Physics, 19, 025008 (2017) ▾ Digest ▾

This work, which was mostly done in collaboration with G. Eyink, formulates the coarse-graining (or filtering) approach in MHD flows from a first-principles physics stand-point. The approach is a powerful framework to study the multi-scale physics of flows, including MHD turbulence. A key result is the proof that magnetic helicity, unlike energy, cannot undergo a cascade to arbitrarily small scales. Magnetic helicity is an important topological quantity in MHD flows that quantifies the degree of knottedness of magnetic field lines. The paper also reviews the concept of a cascade, but within the coarse-graining framework, and attempts to explain intuitively how “rough” flows can dissipate energy without the aid of viscous (or microphysical) processes.

R. Yan, R. Betti, J. Sanz, H. Aluie, B. Liu, A. Frank

Three-dimensional single-mode nonlinear ablative Rayleigh-Taylor instability.

Physics of Plasmas, 23 (2), 022701 (2016) ▾ Digest ▾

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M. K. Rivera, H. Aluie, R. E. Ecke

The direct enstrophy cascade of two-dimensional soap film flows.

Phys. Fluids, 26, 055105 (2014) ▾ Digest ▾

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G. L. Eyink, E. T. Vishniac, C. Lalescu, H. Aluie, K. Kanov, K. Burger, R. Burns, C. Meneveau, A. Szalay

Flux-freezing breakdown observed in high-conductivity magnetohydrodynamic turbulence.

Nature, 497, 466-469 (2013) ▾ Digest ▾

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H. Aluie

The range of scale coupling and the cascade in the presence of shocks.

arXiv:1101.0150 (submitted) ▾ Digest ▾

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H. Aluie

Scale decomposition in compressible turbulence.

Physica D: Nonlinear Phenomena, (in press) ▾ Digest ▾

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H. Aluie, S. Li, H. Li

Conservative cascade of kinetic energy in compressible turbulence.

Astrophysical Journal Letters, 751, L29 (2012) ▾ Digest ▾

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H. Aluie, S. Kurien

Joint downscale fluxes of energy and potential enstrophy in rotating stratified Boussinesq flows.

Europhysics Letters, 96, 44006 (2011) ▾ Digest ▾

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H. Aluie

Compressible turbulence: The cascade and its locality.

Physical Review Letters, 106, 174502 (2011) ▾ Digest ▾

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H. Aluie, G. L. Eyink

Scale locality of magnetohydrodynamic turbulence.

Physical Review Letters, 104, 081101 (2010) ▾ Digest ▾

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G. L. Eyink, H. Aluie

Localness of energy cascade in hydrodynamic turbulence. I. Smooth coarse graining.

Physics of Fluids, 21, 115107 (2009) ▾ Digest ▾

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H. Aluie, G. L. Eyink

Localness of energy cascade in hydrodynamic turbulence. II. Sharp spectral filter.

Physics of Fluids, 21, 115108 (2009) ▾ Digest ▾

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G. L. Eyink, H. Aluie

The breakdown of Alfven's theorem in ideal plasma flows: Necessary conditions and physical conjectures.

Physica D: Nonlinear Phenomena, 223, 82 (2006) ▾ Digest ▾

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