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contributor authorRaval, Jay K.
contributor authorTai, Bruce L.
date accessioned2023-11-29T19:24:47Z
date available2023-11-29T19:24:47Z
date copyright11/30/2022 12:00:00 AM
date issued11/30/2022 12:00:00 AM
date issued2022-11-30
identifier issn1087-1357
identifier othermanu_145_3_031002.pdf
identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4294736
description abstractThrough-tool minimum quantity lubrication (MQL) drilling has been used in industry for decades, but little information is available on the coolant channel design and the effect on fluid distribution due to the inability of in-situ measurement. This study utilizes an Euler–Lagrange computational fluid dynamics (CFD) model to uncover the two-phase flow behavior in MQL drilling. Air is the primary phase modeled as a compressible and turbulent flow. The lubricant droplets are simulated as discrete particles with a proper size distribution. Two-way coupling and droplet-wall interactions are both considered. The results show that the primary phase can reach velocities in the transonic region and is dependent on the helical path of the channel. In addition, most of the lubricant droplets (>95%) impact the channel wall to form fluid film instead of following the air stream. In the cutting zone, droplets can hardly reach the cutting edges in both circular and triangular channel shapes. Finally, a custom-made drilling testbed, along with a transparent work-material simulant, is used to observe and qualitatively validate these results.
publisherThe American Society of Mechanical Engineers (ASME)
titleMist Flow in Through-Tool Minimum Quantity Lubrication Drilling: Two-Phase Flow Simulation and Experimental Observation
typeJournal Paper
journal volume145
journal issue3
journal titleJournal of Manufacturing Science and Engineering
identifier doi10.1115/1.4056146
journal fristpage31002-1
journal lastpage31002-11
page11
treeJournal of Manufacturing Science and Engineering:;2022:;volume( 145 ):;issue: 003
contenttypeFulltext


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