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Modeling and Numerical Simulation of Flow Resistance Characteristics in Slowly-Varying Rectangular Cross-Section Microchannel

[+] Author Affiliations
Shen Teng, Wang Jiong, Sun Dong, Liu Yafeng

Nanjing University of Science and Technology, Nanjing, China

Tian Zhouyu

University of Science and Technology of China, Suzhou, China

Paper No. IMECE2016-65257, pp. V007T09A047; 6 pages
doi:10.1115/IMECE2016-65257
From:
  • ASME 2016 International Mechanical Engineering Congress and Exposition
  • Volume 7: Fluids Engineering
  • Phoenix, Arizona, USA, November 11–17, 2016
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5061-9
  • Copyright © 2016 by ASME

abstract

In this paper, flow characteristics in slowly-varying rectangular microchannels with different aspect ratios and Re numbers ranging from 7 to 200 are investigated. The obtained simulation results are compared with theoretics values based on the Bernoulli equations. The results show that the simulation results just hold an average discrepancy of 10% with the theoretical calculation value whichis presents a good accord. All the research of microchannel, the Poiseuille number of the flow is inconstant within the range of Re number, except when the contract angle is small where Poiseuille number is essentially unchanged.

Copyright © 2016 by ASME

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