Turbophoresis in forced inhomogeneous turbulence

  title={Turbophoresis in forced inhomogeneous turbulence},
  author={Dhrubaditya Mitra and Nils Erland L. Haugen and Igor Rogachevskii},
  journal={The European Physical Journal Plus},
Abstract.We show, by direct numerical simulations, that heavy inertial particles (characterized by Stokes number St) in inhomogeneously forced statistically stationary isothermal turbulent flows cluster at the minima of mean-square turbulent velocity. Two turbulent transport processes, turbophoresis and turbulent diffusion together determine the spatial distribution of the particles. If the turbulent diffusivity is assumed to scale with turbulent root-mean-square velocity, as is the case for… 
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Experimental study of turbulent thermal diffusion of particles in inhomogeneous and anisotropic turbulence
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Experimental study of turbulent transport of nanoparticles in convective turbulence
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Scientific usage of the Pencil Code Search results using
  • Computer Science
  • 2020
In the following the authors present the papers that are making use of the Pencil Code either for their own scientific work of those authors, or for code comparison purposes, although the topics are often overlapping.


Clustering and Turbophoresis in a Shear Flow without Walls
We investigate the spatial distribution of inertial particles suspended in the bulk of a turbulent inhomogeneous flow. By means of direct numerical simulations of particle trajectories transported by
Detection of turbulent thermal diffusion of particles in numerical simulations
The phenomenon of turbulent thermal diffusion in temperature-stratified turbulence causing a non-diffusive turbulent flux of inertial and non-inertial particles in the direction of the turbulent heat
Turbulent thermal diffusion in strongly stratified turbulence: theory and experiments
Turbulent thermal diffusion is a combined effect of the temperature stratified turbulence and inertia of small particles. It causes the appearance of a non-diffusive turbulent flux of particles in
Turbulent thermal diffusion in a multi-fan turbulence generator with imposed mean temperature gradient
We studied experimentally the effect of turbulent thermal diffusion in a multi-fan turbulence generator which produces a nearly homogeneous and isotropic flow with a small mean velocity. Using
Wall accumulation and spatial localization in particle-laden wall flows
Abstract We study the two main phenomenologies associated with the transport of inertial particles in turbulent flows, turbophoresis and small-scale clustering. Turbophoresis describes the
Experimental study of turbulent thermal diffusion in oscillating grids turbulence
We have experimentally detected a new effect, turbulent thermal diffusion, as predicted theoretically by Elperin et al. (Phys Rev Lett (1996) 76:224–228) and associated with the turbulent transport
Tangling clustering of inertial particles in stably stratified turbulence.
It is demonstrated that in the laboratory stratified turbulence this tangling clustering is much more effective than a pure inertial clustering (preferential concentration) that has been observed in isothermal turbulence.
Localization-delocalization transitions in turbophoresis of inertial particles.
It is shown that escaping minima is possible for inertial particles whose time of equilibration is longer than the time to reach the minimum, which means separation: light particles concentrate in a minimum while heavy particles spread away from it.
Particle transport in turbulent curved pipe flow
Direct numerical simulations (DNS) of particle-laden turbulent flow in straight, mildly curved and strongly bent pipes are performed in which the solid phase is modelled as small heavy spherical