Shear-induced particle diffusivities from numerical simulations
نویسندگان
چکیده
منابع مشابه
Numerical simulations of coronal particle trapping
In this paper the trapping of high energy particles in solar coronal loops is addressed. Using simulations, the time evolution of electrons and protons trapped in a magnetic bottle is calculated under various scattering conditions and the results compared with loss-cone analysis. Thereafter the case of timedependent injection into a magnetic loop is addressed, and the results compared with prev...
متن کاملNumerical simulations of a fluid-particle coupling
We present numerical simulations of a model of coupling between a inviscid compressible fluid and a pointwise particle. The particle is seen as a moving interface, through which interface conditions are prescribed. Key points are to impose those conditions at the numerical level, and to deal with the coupling between an ordinary and a partial differential equations.
متن کاملThe redshift and scale dependence of the cosmic shear signal from numerical simulations
The weak lensing shear signal has been measured numerically in N -body simulations at 14 different redshifts (zs = 0.1 to 3.6) and on angular scales of θ = 2 ′ to 32. In addition, the data have been validated by analytical computations for an identical cosmology, with density parameter Ωm = 0.3 and vacuum energy density parameter λ0 = 0.7. This paper reports on the scale and redshift dependence...
متن کاملParticle acceleration in solar flares: observations versus numerical simulations
Solar flares are generally agreed to be impulsive releases of magnetic energy. Reconnection in dilute plasma is the suggested trigger for the coronal phenomenon. It releases up to 1026 J, accelerates up to 1038 electrons and ions and must involve a volume that greatly exceeds the current sheet dimension. The Ramaty High-Energy Solar Spectroscopic Imager satellite can image a source in the coron...
متن کاملNumerical simulations of granular dynamics II : Particle dynamics in
Surfaces of planets and small bodies of our Solar System are often covered by a layer of granular material that can range from a fine regolith to a gravel-like structure of varying depths. Therefore, the dynamics of granular materials are involved in many events occurring during planetary and small-body evolution thus contributing to their geological properties. We demonstrate that the new adap...
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 Fluid Mechanics
سال: 2001
ISSN: 0022-1120,1469-7645
DOI: 10.1017/s0022112001005122