This paper presents a study of fluid flow through microchannel. Based on the work of Senta and Nnanna, [23], a trapezoidal-shaped manifold is used to ensure uniform flow distribution in the microchannel. Analysis further shows that flow uniformity among the channels largely depends on shape of the manifolds, length and location of inlet and outlets, and the inlet flow rate. The test setup consists of one hundred twenty-six 14.5μm-width channels, flow loop, heat source, thermal sensors and pressure transducers. Flow of fluid through the channels is regulated using a peristaltic pump. Experiments were conducted from various flow rates and heat loads. According to experimental data, microchannel has significant impact in the heat transfer rate for all the flow rates considered. This enhancement could be attributed to laminar flow in the microchannels, conduction heat transfer through the walls of the channel, fluid-channel wall interaction, and microconvection within the channel. Results show raises some concerns on the use of empirical correlations for flow between two parallel plates to predict heat transfer behavior in microchannels. In the absence of experimental data, f ≈ −2(dp/dx)dh/ρum2 provides a reasonable estimate of friction factor in microchannel.
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ASME 2008 International Mechanical Engineering Congress and Exposition
October 31–November 6, 2008
Boston, Massachusetts, USA
Conference Sponsors:
- ASME
ISBN:
978-0-7918-4874-6
PROCEEDINGS PAPER
Experimental Study of Fluid Flow in Microchannel
A. G. Agwu Nnanna
A. G. Agwu Nnanna
Purdue University - Calumet, Hammond, IN
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Xi Lu
Purdue University - Calumet, Hammond, IN
A. G. Agwu Nnanna
Purdue University - Calumet, Hammond, IN
Paper No:
IMECE2008-67932, pp. 647-653; 7 pages
Published Online:
August 26, 2009
Citation
Lu, X, & Nnanna, AGA. "Experimental Study of Fluid Flow in Microchannel." Proceedings of the ASME 2008 International Mechanical Engineering Congress and Exposition. Volume 13: Nano-Manufacturing Technology; and Micro and Nano Systems, Parts A and B. Boston, Massachusetts, USA. October 31–November 6, 2008. pp. 647-653. ASME. https://doi.org/10.1115/IMECE2008-67932
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