搜索结果: 1-15 共查到“物理学 shear”相关记录22条 . 查询时间(0.234 秒)
Calculation of shear viscosity using Green-Kubo relations within a parton cascade
Calculation of shear viscosity Green-Kubo relations
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2011/7/21
The shear viscosity of a gluon gas is calculated using the Green-Kubo relation. Time correlations of the energy-momentum tensor in thermal equilibrium are extracted from microscopic simulations using ...
Extraction of shear viscosity in stationary states of relativistic particle systems
relativistic particle systems stationary states Extraction of shear viscosity
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2011/7/21
Starting from a classical picture of shear viscosity we construct a stationary velocity gradient in a microscopic parton cascade. Employing the Navier-Stokes ansatz we extract the shear viscosity coef...
The QGP shear viscosity -- elusive goal or just around the corner?
QGP shear viscosity
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2011/7/21
With the new viscous hydrodynamic + hadron cascade hybrid code VISHNU, a rather precise (O(25%)) extraction of the QGP shear viscosity (eta/s)_QGP from heavy-ion elliptic flow data is possible if the ...
Relaxation time ansatz and shear and bulk viscosities of gluon matter
Relaxation time ansatz shear bulk viscosities
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2011/7/20
Shear and bulk viscosity-to-entropy density ratios are calculated for the pure gluon matter in a non-equilibrium mean-field quasiparticle approach within the relaxation time approximation. We study ho...
Scaling and intermittency in incoherent α-shear dynamo
Dynamo magnetic fields MHD turbulence
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2011/8/17
Abstract: We consider mean-field dynamo models with fluctuating \alpha effect, both with and without shear. The \alpha effect is chosen to be Gaussian white noise with zero mean and given covariance. ...
On the effective shear speed in 2D phononic crystals
2D phononic crystals antiplane shear-wave speed Mathematical Physics
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2011/7/26
On the effective shear speed in 2D phononic crystals.
Crossover from negative to positive shear rate dependence in granular friction
Crossove granular friction
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2011/9/9
We conduct an experiment on the frictional properties of granular matter over a wide range of shear rate that covers both the quasistatic and the inertial regimes. We show that the friction coefficien...
Non-universal shear viscosity from Einstein gravity
Non-universal shear viscosity Einstein gravity
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2010/12/24
A very famous result of gauge/gravity duality is the universality of the ratio of shear viscosity to entropy density in every field theory holographically dual to classical, two-derivative (Einstein)...
Transient shear banding in entangled polymers: a study using the Rolie-Poly model
Transient shear banding Rolie-Poly model
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2010/11/24
Spatially inhomogeneous shear flow occurs in entangled polymer solutions, both as steady state shear banding and transiently after a large step strain or during start up to a steady uniform shear rate...
Age-dependent transient shear banding in soft glasses
Age-dependent transient shear soft glasses
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2010/11/24
We study numerically the formation of long-lived transient shear bands during shear startup within two models of soft glasses (a simple fluidity model and an adapted ‘soft glassy rheology’ model). The...
Enhanced shear separation for chiral magnetic colloidal aggregates
Enhanced shear separation chiral magnetic colloidal aggregates
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2010/11/18
We study the designing principles of the simplest colloidal propeller, an architecture built from four identical spheres that can couple translation with rotation to produce controlled drift motion.By...
Shear bands in a continuum model of foams: how a 3D homogeneous material may seem inhomogeneous in 2D
Shear bands continuum model of foams
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2010/11/17
We describe possible conditions for stationnary inhomogeneous flow behaviour (sheared and
blocked bands) in a continuous mechanical model of a soft visco-elasto-plastic material such as
a foam or a ...
Phenomenological model for ordered onions under shear flow
Phenomenological model ordered onions under shear flow
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2010/11/23
We here propose a phenomenological model for the multi-lamellar vesicles (onions) formation
induced by shear flow. In a nonionic surfactant (C12E4) system, onion phases under a fixed shear flow show ...
Shear and bulk viscosities for pure glue matter
Shear bulk viscosities pure glue matter
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2011/1/6
Shear and bulk viscosities are calculated in a quasiparticle model within a relaxation time approximation for pure gluon matter.
Stochastic Structural Stability Theory applied to roll/streak formation in boundary layer shear flow
Stochastic Structural Stability Theory boundary layer shear flow
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2010/11/16
Stochastic Structural Stability Theory (SSST) provides an autonomous, deterministic, nonlinear dynamical system for evolving the statistical mean state of a turbulent system. In this work SSST is appl...