Investigation of fluid flow out of a microcavity using μ piv

Chin Pei Wang, Farshid Sadeghi, Steven T. Wereley, Han-Sheng Chuang

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

This article presents the results of an experimental and corresponding analytical investigation of fluid flow out of a shallow microcavity (dimple) due to surface shear. An experimental test rig was designed, developed, and used to demonstrate shear-driven fluid flow out of a microcavity. The experimental test rig consists of a flat steel belt driven against a microcavity filled with a fluid. Microparticle image velocimetry (μ PIV) was employed to visualize the shear-driven cavity flow and generate the streamline contours of the flow field. Two different sets of experiments were conducted. The first set examines the important factors that affect the flow field, and these include the cavity depth-to-width ratio (aspect ratio) and the speed of the flat belt. The second set of experiments was designed to observe the important fluid flow phenomena including the extraction and stagnation of the fluid above and below a critical cavity depth. A model was also developed using the computational fluid dynamic software COMSOL Multiphysics (1) to corroborate the experimental and analytical results. The results are in good agreement.

Original languageEnglish
Pages (from-to)817-832
Number of pages16
JournalTribology Transactions
Volume52
Issue number6
DOIs
Publication statusPublished - 2009 Jan 1

Fingerprint

Microcavities
fluid flow
Flow of fluids
shear
Flow fields
flow distribution
cavity flow
cavities
Fluids
fluids
Steel
microparticles
particle image velocimetry
computational fluid dynamics
Velocity measurement
aspect ratio
Aspect ratio
Computational fluid dynamics
Experiments
steels

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

Cite this

Wang, Chin Pei ; Sadeghi, Farshid ; Wereley, Steven T. ; Chuang, Han-Sheng. / Investigation of fluid flow out of a microcavity using μ piv. In: Tribology Transactions. 2009 ; Vol. 52, No. 6. pp. 817-832.
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Investigation of fluid flow out of a microcavity using μ piv. / Wang, Chin Pei; Sadeghi, Farshid; Wereley, Steven T.; Chuang, Han-Sheng.

In: Tribology Transactions, Vol. 52, No. 6, 01.01.2009, p. 817-832.

Research output: Contribution to journalArticle

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