Large-scale bottleneck effect in two-dimensional turbulence
نویسندگان
چکیده
منابع مشابه
Bottleneck effect in three-dimensional turbulence simulations.
At numerical resolutions around 512(3) and above, three-dimensional energy spectra from turbulence simulations begin to show noticeably shallower spectra than k(-5/3) near the dissipation wave number ("bottleneck effect"). This effect is shown to be significantly weaker in one-dimensional spectra such as those obtained in wind tunnel turbulence. The difference can be understood in terms of the ...
متن کاملLarge scale drag representation in simulations of two-dimensional turbulence
Numerical simulations of isotropic, homogeneous, forced and dissipative two-dimensional ~2D! turbulence in the energy transfer subrange are complicated by the inverse cascade that continuously propagates energy to the large scale modes. To avoid energy condensation in the lowest modes, an energy sink, or a large scale drag is usually introduced. With a few exceptions, simulations with different...
متن کاملNonuniversal velocity probability densities in two-dimensional turbulence: The effect of large-scale dissipation
We show that some statistical properties of forced two-dimensional turbulence have an important sensitivity to the form of large-scale dissipation, which is required to damp the inverse cascade. We consider three models of large-scale dissipation: linear “Ekman” drag, nonlinear quadratic drag, and scale-selective hypo-drag that damps only low-wavenumber modes. In all cases, the statistically st...
متن کامل"Bottleneck effect" in two-dimensional microfluidics.
An anomalously long transient is needed to achieve a steady pressurization of a fluid when forced to flow through micronarrowed channels under constant mechanical driving. This phenomenon, known as the "bottleneck effect" is here revisited from a different perspective, by using confined displacements of interfacial fluids. Compared to standard microfluidics, such effect admits in this case a ne...
متن کاملHalting scale and energy equilibration in two-dimensional quasigeostrophic turbulence
The halting scale of the inverse energy cascade and the partition between kinetic and potential energy are considered for the case of forced quasigeostrophic turbulence in the regime of intermediate Rossby deformation length, for which the deformation length is comparable to the energy-containing scales of the flow. Phenomenological estimates for the halting scale and equilibrated energy of the...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Turbulence
سال: 2009
ISSN: 1468-5248
DOI: 10.1080/14685240903273873