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Issue 8, 2009
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Turbulence in a microscale planar confined impinging-jets reactor

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Abstract

Confined impinging-jets reactors (CIJR) offer many advantages for rapid chemical processing at the microscale in applications such as precipitation and the production of organic nanoparticles. It has been demonstrated that computational fluid dynamics (CFD) is a promising tool for “experiment-free” design and scale-up of such reactors. However, validation of the CFD model used for the microscale turbulence applications requires detailed experimental data on the unsteady flow, the availability of which has until now been very limited. In this work, microscopic particle-image velocimetry (microPIV) techniques were employed to measure the instantaneous velocity field for various Reynolds numbers in a planar CIJR. In order to illustrate the validation procedure, the performance of a particular CFD model, the two-layer kε model, was evaluated by comparing the predicted flow field with the experimental data. To our knowledge, this study represents the first attempt to directly measure and quantify velocity and turbulence in a microreactor and to use the results to validate a CFD model for microscale turbulent flows.

Graphical abstract: Turbulence in a microscale planar confined impinging-jets reactor

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Publication details

The article was received on 20 Oct 2008, accepted on 15 Dec 2008 and first published on 29 Jan 2009


Article type: Paper
DOI: 10.1039/B818617K
Citation: Lab Chip, 2009,9, 1110-1118
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    Turbulence in a microscale planar confined impinging-jets reactor

    Y. Liu, M. G. Olsen and R. O. Fox, Lab Chip, 2009, 9, 1110
    DOI: 10.1039/B818617K

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