This work presents a high resolution study of the condition under which a transient fluid flow causes spherical glass beads particles of 10–100 μm in size to detach from glass surfaces. The general approach is to conduct well-controlled experiments, to observe individual microparticle motion in short term resuspension, within a period up to 5s, and to focus on the basic detachment mechanisms of the resuspended particles to fully understand and quantify the behavior of particles immediately before liftoff. Particle tracking obtained from high-speed imaging of individual particle with 4000 frames/s, reveal three different types of motion: rolling/bouncing, immediate liftoff (where the particle showed immediate liftoff without any initial rolling/bouncing) and complex motion where particles travel with rolling/bouncing motion on the surface for a certain distance before liftoff. The longer it will take the particle to start its initial movement the more rapid is the liftoff once motion is initiated. The majority of particle trajectories from the glass substrate were parallel to the surface with complex motion, covering 25% of the total distance traveled in rolling/bouncing motion before liftoff. Additionally, Single layer detachment showed that the detachment percentage initially follow an exponentially increasing trend for a period of ∼ 1s, followed by a plateau phase for a period of 5s.
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ASME 2012 International Mechanical Engineering Congress and Exposition
November 9–15, 2012
Houston, Texas, USA
Conference Sponsors:
- ASME
ISBN:
978-0-7918-4523-3
PROCEEDINGS PAPER
Dynamic Measurements of Micro-Meter Particle Detachment on Glass Surfaces Available to Purchase
Asmaa Sadek Kassab,
Asmaa Sadek Kassab
Texas A&M University, College Station, TX
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Victor M. Ugaz,
Victor M. Ugaz
Texas A&M University, College Station, TX
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Maria D. King,
Maria D. King
Texas A&M University, College Station, TX
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Yassin A. Hassan
Yassin A. Hassan
Texas A&M University, College Station, TX
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Asmaa Sadek Kassab
Texas A&M University, College Station, TX
Victor M. Ugaz
Texas A&M University, College Station, TX
Maria D. King
Texas A&M University, College Station, TX
Yassin A. Hassan
Texas A&M University, College Station, TX
Paper No:
IMECE2012-87786, pp. 959-964; 6 pages
Published Online:
October 8, 2013
Citation
Kassab, AS, Ugaz, VM, King, MD, & Hassan, YA. "Dynamic Measurements of Micro-Meter Particle Detachment on Glass Surfaces." Proceedings of the ASME 2012 International Mechanical Engineering Congress and Exposition. Volume 7: Fluids and Heat Transfer, Parts A, B, C, and D. Houston, Texas, USA. November 9–15, 2012. pp. 959-964. ASME. https://doi.org/10.1115/IMECE2012-87786
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