NDLI: Experimental Study of Fluid Flow in Microchannel

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Lu, Xi Nnanna, A. G. Agwu
Copyright Year	2008
Abstract	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.
Starting Page	647
Ending Page	653
Page Count	7
File Format	PDF
ISBN	9780791848746
DOI	10.1115/IMECE2008-67932
e-ISBN	9780791838402
Volume Number	Volume 13: Nano-Manufacturing Technology; and Micro and Nano Systems, Parts A and B
Conference Proceedings	ASME 2008 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2008-10-31
Publisher Place	Boston, Massachusetts, USA
Access Restriction	Subscribed
Subject Keyword	Manifold Numerical Nanofluid Microchannel Flow distribution Experiments Flow Fluid dynamics Nanofluids Microchannel flow Flow (dynamics) Stress Microchannels Manifolds Heat conduction Fluids Heat Friction Laminar flow Pumps Plates (structures) Sensors Shapes Pressure transducers Heat transfer
Content Type	Text
Resource Type	Article

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