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Direct Simulation Based Model-Predictive Control of Flow Maldistribution in Parallel Microchannels
 

Summary: Direct Simulation Based Model-Predictive Control of
Flow Maldistribution in Parallel Microchannels
Mathieu Martin Chris Patton John Schmitt
Sourabh V. Apte
School of Mechanical, Industrial and Manufacturing Engineering
Oregon State University
Corvallis, OR 97331
July 5, 2009
Abstract
Flow maldistribution, resulting from bubbles or other particulate matter, can lead
to drastic performance degradation in devices that employ parallel microchannels for
heat transfer. In this work, direct numerical simulations of fluid flow through a pre-
scribed parallel microchannel geometry are performed and coupled with active control
of actuated microvalves to effectively identify and reduce flow maldistribution. Accu-
rate simulation of fluid flow through a set of three parallel microchannels is achieved
utilizing a fictitious domain representation of immersed objects, such as microvalves
and artificially introduced bubbles. Flow simulations are validated against experimental
results obtained for flow through a single, high aspect ratio microchannel, flow around
an oscillating cylinder, and flow with a bubble rising in an inclined channel. Results
of these simulations compare very well to those obtained experimentally, and validate

  

Source: Apte, Sourabh V. - School of Mechanical, Industrial, and Manufacturing Engineering, Oregon State University

 

Collections: Engineering