NDLI: Pressure Measurement in Microchannel Using Air Compression

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Lee, Sang-Youp Steven, T. Wereley
Copyright Year	2003
Abstract	A novel pressure measurement method for use in microchannels has been demonstrated in an experiment designed to measure the entrance length in microchannels. In the prototype device, the small pressure taps with closed ends are located every 100μm along the microchannel with several different lengths and widths. This device measures the local pressure of working fluid from a volume change of trapped air in the pressure taps due to surface tension effect when the microchannel is initially filled with the working liquid. The local pressure of the working liquid is determined by observing the air volume change and then applying the ideal gas law and a constitutive relationship for the water-air interfacial pressure difference due to the surface tension. The experimental and theoretical results show trends which agree well with each other.
Sponsorship	Fluids Engineering Division
Starting Page	547
Ending Page	552
Page Count	6
File Format	PDF
ISBN	0791837165
DOI	10.1115/IMECE2003-41163
Volume Number	Fluids Engineering
Conference Proceedings	ASME 2003 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2003-11-15
Publisher Place	Washington, DC, USA
Access Restriction	Subscribed
Subject Keyword	Water Compression Fluids Surface tension Pressure measurement Pressure Engineering prototypes Microchannels
Content Type	Text
Resource Type	Article

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