Investigation of the flow mal-distribution in microchannels

Jyh Tong Teng, Jiann Cherng Chu, Min Sheng Liu, Chi-Chuan Wang*, Ralph Greif

*Corresponding author for this work

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

6 Scopus citations


This study examines the mal-distribution problem in microchannel manifolds. The tubes are of triangular shape with hydraulic diameter of 25 and 50 μm. Ranges of the Reynolds number are from 0.1 to 9. The test results indicate that the mal-distribution decreases with the rise of flow rate. For an inlet flow rate of 0.1 mL/min at the distributor inlet, the maximum difference of the translationsl velocity among manifolds is about 45%. The difference is reduced to 33% if the flow rate is increased to 0.153 mL/min. The maximum translational velocity inside the manifolds is located at the edge of the manifolds and the center portion has the smallest translational velocity. This is because of the spread and turn around water that helps to contribute the increase of flow rate nearby the edge.

Original languageEnglish
Title of host publicationMicro-Electro-Mechanical Systems (MEMS) - 2003
PublisherAmerican Society of Mechanical Engineers
Number of pages5
ISBN (Print)0791837211, 9780791837214
StatePublished - 1 Jan 2003
Event2003 ASME International Mechanical Engineering Congress - Washington, DC, United States
Duration: 15 Nov 200321 Nov 2003

Publication series

NameAmerican Society of Mechanical Engineers, Micro-Electromechanical Systems Division Publication (MEMS)


Conference2003 ASME International Mechanical Engineering Congress
CountryUnited States
CityWashington, DC

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