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Turbulent Vortieity Transport in Three Dimensions
Turbulent Vortieity Transport Three Dimensions
2016/5/18
The nature of vorticity transport in three-dimensional turbulent flow is investigated using data from a direct numerical simulation of channel flow. An extension of Taylor's (1932) vorticity transport...
On the physical accuracy of scalar transport modeling in inhomogeneous turbulence
physical accuracy scalar transport modeling inhomogeneous turbulence
2016/5/18
Direct numerical simulations of scalar fields produced by uniform and line sources in channel flow are used as the basis for examining the accuracy of random flight and closure models in predicting tu...
Holder continuity of solutions of supercritical dissipative hydrodynamic transport equations
Holder continuity solutions supercritical dissipative hydrodynamic transport equations
2014/4/4
We examine the regularity of weak solutions of quasi-geostrophic (QG) type equations with supercritical (α < 1/2) dissipation (−∆)α. This study is motivated by a recent work of Caffarelli ...
Heat transport by turbulent Rayleigh-Bénard convection for $\Pra\ \simeq 0.8$ and $3\times 10^{12} \alt \Ra\ \alt 10^{15}$: Aspect ratio $Γ= 0.50$
turbulent Rayleigh-Bénard convection Heat transport Fluid Dynamics
2012/5/17
We report experimental results for heat-transport measurements, in the form of the Nusselt number \Nu, by turbulent Rayleigh-B\'enard convection in a cylindrical sample of aspect ratio $\Gamma \equiv ...
Heat transport and flow structure in rotating Rayleigh-Benard convection
Rotating Rayleigh-Benard convection direct numerical simulation experiments heat transfer different turbulent states flow structure
2012/4/24
Here we summarize the results from our direct numerical simulations (DNS) and experimental measurements on rotating Rayleigh-B\'enard (RB) convection. Our experiments and simulations are performed in ...
Role of kinetic transport coefficients for hydrodynamic simulations of granular flow
Role of kinetic transport coefficients hydrodynamic simulations of granular flow Fluid Dynamics
2012/4/20
A numerical study is presented to assess the performance of two different models of kinetic transport coefficients for granular materials, namely the Jenkins-Richman theory for moderately dense, quasi...
We examine energy transport in an ensemble of closed quantum systems driven by stochastic perturbations. One can show that the probability and energy fluxes can be described in terms of quantum advect...
Transport Induced by Mean-Eddy Interaction: II. Analysis of Transport Processes
Eulerian Transport Lagrangian Transport Mean-Eddy Interaction Dynamical Systems Approach Wind-Driven Ocean Circulation
2011/8/11
Abstract: We present a framework for the analysis of transport processes resulting from the mean-eddy interaction in a flow. The framework is based on the {\bf T}ransport {\bf I}nduced by the {\bf M}e...
Transport Induced by Mean-Eddy Interaction: I. Theory, and Relation to Lagrangian Lobe Dynamics
Eulerian Transport Lagrangian Transport Mean-Eddy Interaction Dynamical Systems Approach Wind-Driven Ocean Circulation
2011/8/11
Abstract: In this paper we develop a method for the estimation of {\bf T}ransport {\bf I}nduced by the {\bf M}ean-{\bf E}ddy interaction (TIME) in two-dimensional unsteady flows. The method is built o...
Diagrammatic Approach to Classical Transport in Disordered Continuous Media: Investigating the High-Temperature Regime of Quantum Hall Transitions
Diagrammatic Classical Transport Disordered Continuous Media High-Temperature Regime of Quantum
2011/8/17
Abstract: We develop a general diagrammatic formalism based on a local conductivity approach to compute electronic transport in continuous media with long range disorder, in the absence of quantum int...
Momentum transport and torque scaling in Taylor-Couette flow from an analogy with turbulent convection
Convection and heat transfer Taylor-Couette flow
2011/8/31
We generalize an analogy between rotating and strati ed shear ows. This analogy is summarized in Table 1. We use this analogy in the unstable case (centrifugally unstable ow v.s. convection)to compute...
Stability and turbulent transport in rotating shear flows: prescription from analysis of cylindrical and plane Couette flows data
Stability and turbulent transport rotating shear flow
2011/8/30
This paper provides a prescription for the turbulent viscosity in rotating shear flows for use e.g. in geophysical and astrophysical contexts. This prescription is the result of the detailed analysis ...
Diel heat transport within the hyporheic zone of a pool-riffle-pool sequence of a losing stream and evaluation of models for fluid flux estimation using heat
Diel heat transport hyporheic zone pool-riffle-pool sequence losing stream evaluation of models fluid flux estimation heat
2014/4/17
Hyporheic water is thought to infiltrate at the head of a riffle, which in turn is complemented by upwelling back to the stream at the tail of the riffle in a pool-riffle-pool (PRP) sequence. Heat tra...
3D contaminant migration model with consolidation dependent transport coefficients
porosity contaminant transport consolidation nonlinearity elastoplasticity
2012/2/24
Soil consolidation would induce variations of its transport coefficients such as hydraulic conductivity and diffusion coefficient. This paper presents a study of the influence of barrier consolidation...
Relations for water-vapor transport through fibers
convective drying drying behavior heat and mass transfer mathematical relations microwave assisted drying
2010/3/12
The present work is devoted to the combined microwave and convective drying behavior of carpets. The mathematical relations developed may be used to describe the moisture sorption mechanisms of carpet...