Deposition of inertial particles from turbulent flow in channels at high Reynolds numbers

Autor:	D. Ph. Sikovsky
Rok vydání:	2011
Předmět:	Physics Nuclear and High Energy Physics Radiation Turbulence Particle-laden flows Laminar sublayer Reynolds number Reynolds stress Mechanics Physics::Fluid Dynamics symbols.namesake Classical mechanics symbols Particle Deposition (phase transition) Particle deposition
Zdroj:	Thermophysics and Aeromechanics. 18:235-254
ISSN:	1531-8699 0869-8643
DOI:	10.1134/s0869864311020053
Popis:	On the basis of the previously developed asymptotic theory of turbulent particle-laden flow with particle deposition in channels coupled with the transport model for the particle Reynolds stress, an asymptotic solution to the problem on the deposition of particles in the limit of high Reynolds numbers was obtained. The numerical calculations confirmed the presence, in the region of the transition from the diffusion-impaction regime of particle sedimentation to the inertia-moderated regime, bifurcation phenomenon of a solution found previously in earlier studies. Features of particle accumulation in the viscous sublayer are analyzed. On the basis of the numerical solution, correlations for particle deposition velocity were obtained. Boundary conditions of the wall-function type for particle concentration whose use allows widening the applicability limits of the equilibrium Eulerian models in terms of particle inertia are proposed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::43c5622f9f0286133a95f89952b58fcc https://doi.org/10.1134/s0869864311020053 Zobrazit plný text záznamu Full text from SpringerLink