A numerical study of bend-induced particle deposition in and behind duct bends
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TL;DR: Investigation of microparticle deposition and distribution due to the presence of duct bends by employing the Eulerian approach with Reynolds stress turbulent model and a Lagrangian trajectory method found that bend walls with surfaces of higher capture velocity tend to accumulate more contaminant particles.
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About: This article is published in Building and Environment. The article was published on 01 Jun 2012. and is currently open access. The article focuses on the topics: Particle deposition & Particle velocity.
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Citations
Effects of rib spacing and height on particle deposition in ribbed duct air flows
TL;DR: In this paper, the influence of rib spacing and height on particle deposition in ribbed duct air flows were numerically investigated, and an efficiency ratio was defined to evaluate the particle deposition enhancement ratio together with the increase of flow drag.
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CFD investigation on particle deposition in aligned and staggered ribbed duct air flows
TL;DR: In this article, the effects of surface rib arrangements on particle deposition in two-dimensional ribbed duct air flows by CFD method were investigated, and the simulation results showed that the surface ribs with aligned arrangement have better performance on small particle deposition enhancement, compared with staggered surface ribs.
48
Numerical study on deposition of particles in a 90° bend in the presence of swirling flow using Eulerian-Lagrangian method
TL;DR: In this article, an Eulerian-Lagrangian method has been used to study deposition and penetration of particles in a 90° bend in the presence of swirling flow.
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Experimental Study of Solid Particle Deposition in 90° Ventilated Bends of Rectangular Cross Section with Turbulent Flow
TL;DR: In this article, the authors investigated averaged aerosol deposition in 90° ventilated bends of rectangular cross section by measuring particle concentration changes at bend inlet and outlet in steady state.
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Numerical study on characteristics of particle deposition efficiency on different walls of 90° square bend
TL;DR: In this article, gas-solid flow in 90° bend was simulated using the RNG k-ɛ turbulence model and the Lagrangian particle tracking model, and the results showed that the main deposition location is related to the Stokes number.
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References
•Book
Numerical heat transfer and fluid flow
Suhas V. Patankar
- 01 Jan 1980
TL;DR: In this article, the authors focus on heat and mass transfer, fluid flow, chemical reaction, and other related processes that occur in engineering equipment, the natural environment, and living organisms.
23.4K
Numerical Heat Transfer and Fluid Flow
TL;DR: In this paper, numerical heat transfer and fluid flow are used to transfer heat from a nuclear power plant to a nuclear fluid flow system, and the resulting fluid flow is used for nuclear power plants.
16.6K
Characterization of expiration air jets and droplet size distributions immediately at the mouth opening
Christopher Y.H. Chao,M.P. Wan,Lidia Morawska,Graham R. Johnson,Zoran Ristovski,Megan Hargreaves,Kerrie Mengersen,Stephen Corbett,Yuguo Li,Xaiojan Xie,David Katoshevski +10 more
TL;DR: The size distributions of expiratory droplets expelled during coughing and speaking and the velocities of the expiration air jets of healthy volunteers were measured using the interferometric Mie imaging and particle image velocimetry techniques to avoid air sampling losses.
1K
Role of ventilation in airborne transmission of infectious agents in the built environment - a multidisciplinary systematic review.
Yiping Li,Gabriel M. Leung,Julian W. Tang,Xudong Yang,Christopher Y.H. Chao,J.Z. Lin,J.W. Lu,Per Væggemose Nielsen,Jianlei Niu,Hua Qian,Adrian Sleigh,Huey-Jen Jenny Su,Jan Sundell,Tze Wai Wong,P.L. Yuen +14 more
TL;DR: In this article, a review panel comprising medical and engineering experts in the fields of microbiology, medicine, epidemiology, indoor air quality, building ventilation, etc. systematically assessed 40 original studies through both individual assessment and a 2-day face-to-face consensus meeting.
1K
COMPARISON OF DIFFERENT k-ε MODELS FOR INDOOR AIR FLOW COMPUTATIONS
TL;DR: In this paper, Jive k-e, two-equation models are evaluated for their performance in predicting natural convection, forced convection and mixed convection in rooms, as well as an impinging jet flow.
770