... 07 2011 23 08 2011 23 08 2011 external flows flow simulation heat transfer mass transfer numerical analysis rotational flow turbulent diffusion rotating circular cylinder mass transfer turbulence direct numerical simulation Schmidt number Understanding heat...

.... The turbulent diffusion term gains importance at greater Sc numbers and is of the same order of magnitude (or even larger) than the production term between 20 < y + < 80 , indicating that in this wall distance range, the main part of the scalar variance stems from turbulent transport...

... turbulent diffusion large-eddy simulation roughness turbulence deposition mass sink The deposition of particles from turbulent flows onto adjacent flow boundaries is of great interest in many industrial processes. Extensive data on particle deposition onto rough surfaces (see, ( 1 2...

...-liquid slip. Turbulent dispersion influences droplet trajectories significantly because of the impact of random gas-phase fluctuations. e-mail: ck@eos.ncsu.edu 28 05 2006 19 10 2006 drops sprays two-phase flow flow simulation jets stratified flow turbulent diffusion drag...

...E. Sauret; I. Vallet The purpose of this paper is to develop a second-moment closure with a near-wall turbulent pressure diffusion model for three-dimensional complex flows, and to evaluate the influence of the turbulent diffusion term on the prediction of detached and secondary flows. A complete...

... in the branch pipe. The increased turbulence diffused momentum more efficiently thus reducing the length of the recirculation by 25% with its width and strength also decreasing in magnitude. The overall effect of the increased dissipation due to turbulence and reduced dissipation due to mean flow...

.... The turbulent Prandtl numbers σ ( k , ϵ ) are modeled to provide substantial turbulent diffusion in near-wall regions. The model is validated against a few flow cases, yielding predictions in good agreement with the direct numerical simulation and experimental data. 04 10 2005 07 04 2006 shear...

... Bertodano et al. [1994, “Phase Distribution in Bubbly Two-Phase Flow in Vertical Ducts,” Int. J. Multiphase Flow, 20(5), pp. 805–818 ]. The turbulent diffusion of the bubbles is the dominant phase distribution mechanism. A new analytic result is presented to support the development of the model...

... described are wake broadening, profile asymmetry, and effects of increased turbulent diffusion, variable surface roughness, and streamwise development. The University of Utah Transonic Wind Tunnel (TWT) is used for the study because it produces Mach numbers, pressure variations, Reynolds numbers, passage...

... simulation drag reduction channel flow non-Newtonian flow convection turbulent diffusion shear turbulence It is well known that surfactant additives are good drag reducers with long-term action, and can be applied to district heating and cooling systems. The mechanism of drag reduction...

... and momentum diffusion of the gas-phase can be computed. vortices two-phase flow jets nozzles flow simulation turbulent diffusion The radial profile for the rms velocity fluctuation of the particle is shown in Fig. 16 , where the axial and radial components on two sections of x / D...

... October 25, 2002; revised manuscript received April 5, 2004. Associate Editor: M. W. Plesniak. 25 October 2002 05 April 2004 11 03 2005 surface roughness flow measurement mixing channel flow boundary layer turbulence turbulent diffusion laser Doppler anemometry viscosity...

... forced convection flow simulation friction turbulent diffusion Entropy production characterizes the energy conversion of thermofluid processes, particularly regarding the irreversible degradation of mechanical energy into internal energy. Viscous dissipation is a main frictional...

.... The use of counterflow also enhances three dimensionality, a feature that is expected to be beneficial under burning conditions. 24 02 2004 24 11 2004 25 01 2005 shear turbulence combustion chemically reactive flow flow control turbulent diffusion flow separation confined flow...

... 2004 flow visualisation artificial organs rotational flow viscosity haemodynamics laser velocimetry blood sodium compounds organic compounds liquid mixtures refractive index biodiffusion pipe flow turbulent diffusion Mechanical assistance in blood pumping varies widely...

... are based on the application of a kinetic transport equation, similar to Boltzmann’s equation, to obtain the turbulent diffusion force for the dispersed phase [1–4]. They have already been constituted and validated for the case of particles in homogeneous turbulence and jets [5] and for microscopic bubbles...

... 2003 25 February 2004 10 09 2004 turbulent diffusion shear turbulence Recently, the direct numerical simulation (DNS) by Yao et al. 1 pointed out that the effects of the “pressure-diffusion” process in the turbulence energy transport equation were significant...

... OF FLUIDS ENGINEERING . Manuscript received by the Fluids Engineering Division July 11, 2002, revised manuscript received April 21, 2003. Associate Editor: F. F. Grinstein. 11 July 2002 21 April 2003 07 10 2003 wakes turbulent diffusion boundary layer turbulence vortices...

... literature, 2 3 , adds more insights into the processes in electrical precipitation, particularly with reference to “grade efficiency.” turbulent diffusion computational fluid dynamics electrostatic precipitators flow visualisation flow simulation Contributed by the Fluids Engineering...

... Engineering Division March 13, 2002; revised manuscript received September 15, 2002. Associate Editor: M. Plesniak. 13 March 2002 15 September 2002 09 06 2003 turbulent diffusion vortices flow measurement high-pass filters computational fluid dynamics jets Turbulent...