搜索结果: 1-15 共查到“数学 turbulent”相关记录18条 . 查询时间(0.168 秒)
What make them all so turbulent
turbulent maps chain recurrent points densely chaotic maps omegalimit sets
<
2012/6/9
We give a unified proof of the existence of turbulence for some classes of continuous interval maps which include, among other things, maps with periodic points of odd periods > 1, some maps with dens...
A Numerical Study of Turbulent Flame Speeds of Curvature and Strain G-equations in Cellular Flows
Curvature/Strain G-equations Cellular Flows Front Speed Computation Enhancement and Quenching
<
2012/2/29
We study front speeds of curvature and strain G-equations arising in turbulent combustion. These G-equations are Hamilton-Jacobi type level set partial differential equations (PDEs) with non-coercive ...
Simplified non-Navier-Stokes model of turbulent flow and its first numerical realization in D2
Simplified non-Navier-Stokes model turbulent flow Numerical Analysis
<
2011/9/21
Abstract: This paper contains information about numerical realization of the model of turbulent flow proposed by Marek Burnat (see ARXIV: M.Burnat "On some mathematical model of turbulent flow with in...
Large Eddy Simulation for Turbulent Flows with Critical Regularization
Turbulence models existence weak solution
<
2011/8/29
Abstract: In this paper, we establish the existence of a unique "regular" weak solution to the Large Eddy Simulation (LES) models of turbulence with critical regularization. We first consider the crit...
Low-dimensional model of turbulent Rayleigh-Benard convection in a Cartesian cell with square domain
Low-dimensional model Cartesian cell square domain turbulent Rayleigh-Benard convection
<
2011/7/7
A low-dimensional model (LDM) for turbulent Rayleigh-Benard convection in a Cartesian cell with square domain, based on the Galerkin projection of the Boussinesq equations onto a finite set of empiric...
Scaling laws prediction from a solvable model of turbulent thermal convection
Scaling laws solvable model turbulent thermal convection
<
2011/7/7
A solvable turbulent model is used to predict both the structure of the boundary layer and the scaling laws in thermal convection. The transport of heat depends on the interplay between the thermal, v...
Scaling in large Prandtl number turbulent thermal convection
Scaling Prandtl number thermal convection
<
2011/7/5
We study the scaling properties of heat transfer Nu in turbulent thermal convection at large
Prandtl number Pr using a quasi-linear theory. We show that two regimes arise, depending on the
Reynolds ...
Effects of turbulent transfer on the critical behaviour
Effects of turbulent transfer critical behaviour
<
2010/12/28
Critical behaviour of two systems, subjected to the turbulent mixing,is studied by means of the field theoretic renormalization group. The first system,described by the equilibrium model A, correspond...
Universality of scaling and multiscaling in turbulent symmetric binary fluids
Universality of scaling turbulent symmetric binary fluids
<
2010/12/28
We elucidate the universal scaling and multiscaling properties of the nonequilibrium steady states (NESS) in a driven symmetric binary fluid (SBF) mixture in its homogeneous miscible phase in three di...
Conformal Invariance in Inverse Turbulent Cascades
Conformal Invariance Inverse Turbulent Cascades
<
2010/12/28
We study statistical properties of turbulent inverse cascades in a class of nonlinear models describ-ing a scalar field transported by a two-dimensional incompressible flow. The class is characterized...
Two-Point Vorticity Statistics in the Inverse Turbulent Cascade
Two-Point Vorticity Statistics Inverse Turbulent Cascade
<
2010/12/28
We present a statistical analysis of the two-point vorticity probability density of the vorticity eld generated in the inverse cascade of stationary two-dimensional turbulence.
Experimental evidence of conformal invariance in soap film turbulent flows
Experimental evidence of conformal invariance soap film turbulent flows
<
2011/3/2
We present experimental evidence of statistical conformal invariance in isocontours of fluid thickness in experiments of two-dimensional turbulence using soap films. A Schlieren technique is used to v...
On modelling transitional turbulent flows using under-resolved direct numerical simulations: The case of plane Couette flow
Pattern Formation and Solitons (nlin.PS) Fluid Dynamics (physics.flu-dyn)
<
2010/11/10
Direct numerical simulations have proven of inestimable help to our understanding of the transition to turbulence in wall-bounded flows. While the dynamics of the transition from laminar flow to turbu...
Mean-field/PDF numerical approach for polydispersed turbulent two-phase flows
Mean-field/PDF numerical approach polydispersed turbulent two-phase flows
<
2010/12/15
The purpose of this paper is to give an overview in the realm of numerical computations of
polydispersed turbulent two-phase flows, using a mean-field/PDF approach. In this approach,
the numerical s...
Ergodic properties of a model for turbulent dispersion of inertial particles
Ergodic properties model for turbulent dispersion of inertial particles
<
2010/11/30
We study a simple stochastic differential equation that models the dispersion of close heavy
particles moving in a turbulent flow. In one and two dimensions, the model is closely related to the onedi...