Journal
PHYSICS OF FLUIDS
Volume 24, Issue 10, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4759493
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Funding
- Merit Allocation Scheme on the NCI National Facility at the Australian National University (ANU)
- Australian Research Council [DP0985253, DP120100013]
- Melbourne Centre for Nanofabrication
- RMIT University
- Australian Research Council [DP0985253] Funding Source: Australian Research Council
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A polydimethylsiloxane microfluidic device composed of a single microchannel with a thin flexible layer present over a short length along one side of the channel was fabricated and modelled in order to investigate the complex fluid-structure interaction that arises between a flowing fluid and a deformablewall. Experimental measurements of thin layer deformation and pressure drop are compared with predictions of two- and three-dimensional computational models that numerically solve the coupled set of equations governing both the elasticity of the thin layer and the fluid. It is shown that the two-dimensional model, which assumes the flexible thin layer comprises an infinitely wide elastic beam of finite thickness, reasonably approximates a three-dimensional model, and is in excellent agreement with experimental observations of the thin layer profile when the width of the thin layer is beyond a critical value, roughly twice the length of the thin layer. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4759493]
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