Journal ArticleDOI
A simple method for the calculation of turbulent deposition to smooth and rough surfaces
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TLDR
In this article, a simple analytical method is presented for calculation of deposition to both smooth and rough surfaces, and the main analysis is given for sublayer scale roughness, and approximations are given which indicate simple scaling laws for the process.About:
This article is published in Journal of Aerosol Science.The article was published on 1981-01-01. It has received 295 citations till now. The article focuses on the topics: Surface roughness & Deposition (phase transition).read more
Citations
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Dispersion and Deposition of Spherical Particles from Point Sources in a Turbulent Channel Flow
Amy Li,Goodarz Ahmadi +1 more
TL;DR: In this paper, the dispersion and deposition of aerosol particles from a point source in a turbulent channel flow are studied, and an empirical mean velocity profile and experimental data for turbulent intensities are used in the analysis.
Journal ArticleDOI
Transport and Deposition of Particles in Turbulent and Laminar Flow
TL;DR: In this paper, the physical processes responsible for the transport and deposition of particles and their theoretical modeling are discussed, including stochastic Lagrangian particle tracking and a unified Eulerian advection diffusion approach.
Journal ArticleDOI
Particle deposition in turbulent duct flows—comparisons of different model predictions
Lin Tian,Goodarz Ahmadi +1 more
TL;DR: In this article, a series of numerical simulations were conducted to study the transport and deposition of nano- and micro-particles in a turbulent duct flow using different turbulence models, and the importance of turbulence model, boundary conditions, and turbulence fluctuation particularly near wall on particle transport, deposition, and particle trajectory analysis were performed with the in-house PARTICLE (object-oriented C++) code, as well as with FLUENTTM code with and the use of user's defined subroutines.
Journal ArticleDOI
Aerosol dry deposition on vegetative canopies. Part I: Review of present knowledge
TL;DR: In this paper, a review of the present knowledge of aerosol dry deposition, with respect to modelling and experimental aspects, is presented, and a synthesis is provided through different inter-comparisons concerning: (1) the influence of atmospheric stability on fine particle deposition, (2) the evolution of coarse aerosol deposition with aerodynamic conditions and (3) the aerosol size dependence of deposition on grass and forest canopies.
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Particle deposition indoors: a review
TL;DR: In this paper, the authors provide an up-to-date revision for both experiment and modeling on particle deposition indoors for non-industrial environments and summarize the experimental studies for particle deposition in indoor environments.
References
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Book
Boundary layer theory
TL;DR: The flow laws of the actual flows at high Reynolds numbers differ considerably from those of the laminar flows treated in the preceding part, denoted as turbulence as discussed by the authors, and the actual flow is very different from that of the Poiseuille flow.
Journal ArticleDOI
The structure of turbulent boundary layers
TL;DR: In this article, the authors describe the formation of low-speed streaks in the region very near the wall, which interact with the outer portions of the flow through a process of gradual lift-up, then sudden oscillation, bursting, and ejection.
Journal ArticleDOI
Structural features of turbulent flow over smooth and rough boundaries
TL;DR: In this article, the effects of different surface roughness conditions on the turbulence structure in the boundary region were investigated and it was shown that ejection phases corresponded with ejection of low momentum fluid outwards from the boundary whilst inrush phases were associated with the transport of high momentum fluid inwards towards the boundary.
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Deposition of Suspended Particles from Turbulent Gas Streams
Journal ArticleDOI
Rough wall turbulent boundary layers
TL;DR: In this article, a detailed experimental study of turbulent boundary-layer development over rough walls in both zero and adverse pressure gradients is described, where the skin friction was determined by pressure tapping the roughness elements and measuring their form drag.
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