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contributor authorS. C. Lin
contributor authorT. C. Kuo
contributor authorC. C. Chieng
date accessioned2017-05-08T23:58:02Z
date available2017-05-08T23:58:02Z
date copyrightJanuary, 1998
date issued1998
identifier issn0742-4787
identifier otherJOTRE9-28674#69_1.pdf
identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/121240
description abstractThe Eulerian-Lagrangian approach is employed to simulate droplet trajectories due to the large-velocity gradient between two solid surfaces: a stationery block (slider) and a rotating plane (disk). Sudden expansion after the extremely small spacing will trap the particles in the open spaces. The fluid phase flowfield is obtained by solving Navier-Stokes equations with slip boundary correction in the Eulerian approach, and the droplet trajectories are calculated by integrating equations of motion with slip correction in the Lagrangian approach. Because of the extremely small spacing and the droplet size, Brownian motion effectively increases the probability of slider-head collisions, especially for extremely small particles. This study demonstrates that the effect due to particle size is the dominant factor in determining the probability of particle-slider collision, especially for particle sizes comparable with the air mean free path and the flowfield immediately adjacent to the solid surfaces. The results also show that lowering the flying height of the slider and increasing the disk velocity attracts the particles toward the gap between the disk and the slider.
publisherThe American Society of Mechanical Engineers (ASME)
titleParticle Trajectories Around a Flying Slider
typeJournal Paper
journal volume120
journal issue1
journal titleJournal of Tribology
identifier doi10.1115/1.2834192
journal fristpage69
journal lastpage74
identifier eissn1528-8897
keywordsParticulate matter
keywordsDisks
keywordsCollisions (Physics)
keywordsProbability
keywordsFluids
keywordsEquations of motion
keywordsSpace
keywordsNavier-Stokes equations
keywordsGradients
keywordsParticle size AND Brownian motion
treeJournal of Tribology:;1998:;volume( 120 ):;issue: 001
contenttypeFulltext


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