Microparticle detachment from surfaces exposed to turbulent air flow: Effects of flow and particle deposition characteristics

Ibrahim, Asmaa; Dunn, Patrick F.; Brach, Raymond M.

doi:10.1016/j.jaerosci.2004.01.002

Cited by 94 publications

(75 citation statements)

References 19 publications

(28 reference statements)

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“…Additionally, air velocities over indoor surfaces may vary considerably, from air bursts associated with human movement to airflow in ventilation systems. Wind tunnel resuspension studies, such as those by Corn and Stein (1965), Wu et al (1992), Nicholson (1993), Braaten (1994), Ibrahim et al (2003Ibrahim et al ( , 2004Ibrahim et al ( , 2008, Jiang et al (2008), and Mukai et al (2009), among others, have demonstrated the important role of particle size and air velocity on resuspension from monolayer deposits. Generally, the amount of particles that resuspend from a surface increases with increasing particle size and air velocity.…”

Section: Particle Size and Air Velocitymentioning

confidence: 99%

“…Monolayer deposits were examined in studies on the aerodynamic resuspension of particles by Corn and Stein (1965), Wen and Kasper (1989), Braaten et al (1990), John et al (1991), Wu et al (1992), Taheri and Bragg (1992), Nicholson (1993), Braaten (1994), Otani et al (1995), Smedley et al (1999), Reeks and Hall (2001), Ziskind et al (2002), Ibrahim et al (2003), Ibrahim et al (2004), Miguel et al (2005), Ibrahim and Dunn (2006), Ibrahim et al (2008), Jiang et al (2008), Goldasteh et al (in press), and Kassab et al (2013). For these studies, dust loads are on the order of 10 −5 to 1 g/m 2 .…”

Section: Wind Tunnel Studiesmentioning

confidence: 99%

“…Many monolayer studies have examined particles >10 μm in diameter, e.g., Braaten (1994) and Ibrahim et al (2003Ibrahim et al ( , 2004Ibrahim et al ( , 2008, which more easily resuspend compared to their smaller counterparts, and only a few studies, e.g., Corn and Stein (1965), Jiang et al (2008), and Goldasteh et al (in press), have examined particles near 10 μm in diameter. The results of the latter demonstrate that very high velocities, unrealistic of what would be found in the indoor environment, are required to resuspend significant quantities of coarse particles.…”

Section: Particle Size and Air Velocitymentioning

confidence: 99%

“…2007; Jiang et al 2008;Mukai et al 2009;Goldasteh et al in press;Kassab et al 2013); particle composition (Wu et al 1992;Braaten 1994;Ibrahim et al 2003;Goldasteh et al 2012); characteristics of the airflow, such as acceleration (Wu et al 1992;Nicholson 1993;Ibrahim et al 2003), turbulence (Ibrahim et al 2004;Mukai et al 2009), exposure time (Ibrahim et al 2003); and relative humidity and residence time (Ibrahim et al 2004). …”

Section: Introductionmentioning

confidence: 99%

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Monolayer and Multilayer Particle Deposits on Hard Surfaces: Literature Review and Implications for Particle Resuspension in the Indoor Environment

Boor

Siegel

Novoselac

2013

Aerosol Science and Technology

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Particle deposits on indoor surfaces can be as complex and diverse as the indoor environments in which they exist. Dust loading can range over several orders of magnitude, suggesting the existence of different types of particle deposits. These deposits can be broadly classified as either a monolayer, in which particles are sparsely deposited on a surface, or a multilayer, in which particles are deposited on top of one another and there is particle-toparticle adhesion and interaction. Particles within these diverse structures of settled indoor dust can become airborne through a process known as resuspension, which can occur due to airflow in ventilation ducts or human activity indoors. The dust loading and deposit structure on an indoor surface may have important implications for resuspension in the indoor environment. This literature review provides a summary of dust loads found on indoor surfaces in field studies and classifies each dust load as either a monolayer or multilayer particle deposit. The article highlights the unique attributes associated with resuspension from both types of particle deposits by summarizing key findings of the experimental resuspension literature. The fundamental differences in the resuspension process between monolayer and multilayer deposits suggest that resuspension may vary considerably among the broad spectrum of dust loads found on indoor surfaces.

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Section: Particle Size and Air Velocitymentioning

confidence: 99%

Section: Wind Tunnel Studiesmentioning

confidence: 99%

Section: Particle Size and Air Velocitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Monolayer and Multilayer Particle Deposits on Hard Surfaces: Literature Review and Implications for Particle Resuspension in the Indoor Environment

Boor

Siegel

Novoselac

2013

Aerosol Science and Technology

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“…It is associated with convective airflow in ventilation ducts. Previous experimental researches have demonstrated the important parameters which can affect resuspension, including air velocity [8], particle size and composition [9], surface material and roughness [10], and relative humidity and residence time [11]. Particle resuspension may also be strongly dependent on whether the deposit is a monolayer or a multilayer.…”

Section: Introductionmentioning

confidence: 99%

Experimental Research and Modeling of Particle Deposition in Ventilation Ducts

Fan

Hua

2013

Advances in Mechanical Engineering

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The model to predict particle deposition velocity on rough walls in fully developed turbulent duct flows has been developed in previous studies. For particle deposition model boundary conditions, it is assumed that the concentration of the particle is zero on the surface and the resuspension velocity is constant. However, the resuspension velocity may not be constant with the increase in mass of the deposited dust. To analyze the behavior of resuspension in air flow, a set of experiments were designed and conducted. Results showed that there was a linear relationship between the mass of resuspension and deposited dust. Also, the particle deposition model was improved by adding a resuspension item to the equation, and the steady-state equation was developed into a time-varying equation. The analysis results are presented in this paper.

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Environmental Health in Built Environments

Nasir

2013

Aerosol Science

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Microparticle detachment from surfaces exposed to turbulent air flow: Effects of flow and particle deposition characteristics

Cited by 94 publications

References 19 publications

Monolayer and Multilayer Particle Deposits on Hard Surfaces: Literature Review and Implications for Particle Resuspension in the Indoor Environment

Monolayer and Multilayer Particle Deposits on Hard Surfaces: Literature Review and Implications for Particle Resuspension in the Indoor Environment

Experimental Research and Modeling of Particle Deposition in Ventilation Ducts

Environmental Health in Built Environments

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