Frictional characteristics of microchannel gas flow

Abdullahel Bari, Jae Mo Koo, Linan Jiang, Jay Paidipati, Kenneth E. Goodson

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The improved rates of heat transfer in microchannel gas flows are promising for the design and development of microfluidic systems. This research focuses on the flow characteristics of air in rectangular micro/minichannels at moderate velocities (∼100 m/sec). The 50.8 mm long channels vary from approximately 266 μm to 1090 μm in hydraulic diameter, and the aspect ratio ranges from 0.1 to 0.75. The value of Re ranged from 250 to 4300, with the intention of studying the transition to turbulence. The friction factor is found to be higher than predicted values for Re < 1400 and lower when Re > 1400 suggesting earlier transition to turbulence.

Original languageEnglish (US)
Title of host publicationInternational Conference on Microchannels and Minichannels
PublisherAmerican Society of Mechanical Engineers
Number of pages4
ISBN (Print)0791836673, 9780791836675
StatePublished - 2003
Externally publishedYes
EventFirst International Conference on Microchannels and Minichannels - Rochester, NY, United States
Duration: Apr 24 2003Apr 25 2003

Publication series

NameInternational Conference on Microchannels and Minichannels


ConferenceFirst International Conference on Microchannels and Minichannels
Country/TerritoryUnited States
CityRochester, NY

ASJC Scopus subject areas

  • General Engineering


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