Mach Number on Outlet Plane of a Straight Micro-Tube

Y. Asako, D. Kawashima, Toru Yamada, C. Hong

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingpeer-review

4 Citations (SciVal)

Abstract

The Mach number and pressure on the outlet plane of a straight micro-tube were investigated numerically for both laminar and turbulent flow cases. The numerical methodology is based on the Arbitrary-Lagrangian-Eulerian (ALE) method. The LB1 turbulence model was used for the turbulent flow case. The compressible momentum and energy equations with the assumption of the ideal gas were solved. The computational domain is extended to the downstream region from the micro-tube outlet. The back pressure was given to the outside of the downstream region. The computations were performed for a tube whose diameter ranges from 50 to 500 gm. The average Mach number on the outlet plane of the fully under-expanded flow depends on the tube diameter and ranges from 1.16 to 1.25. The flow characteristics of the under-expanded gas flow in a straight micro-tube were revealed.
Original languageEnglish
Title of host publicationProceedings of the ASME 2013 International Mechanical Engineering Congress and Exposition. Volume 7A: Fluids Engineering Systems and Technologies
PublisherAmerican Society Of Mechanical Engineers (ASME)
PagesV07AT08A020
Volume7A
ISBN (Print)978-0-7918-5631-4
DOIs
Publication statusPublished - 2014
EventASME International Mechanical Engineering Congress and Exposition, 2013 - San Diego, CA, United States
Duration: 2013 Nov 152013 Nov 21

Publication series

Name
Volume7A

Conference

ConferenceASME International Mechanical Engineering Congress and Exposition, 2013
Abbreviated titleIMECE2013
Country/TerritoryUnited States
CitySan Diego, CA
Period2013/11/152013/11/21

Subject classification (UKÄ)

  • Fluid Mechanics and Acoustics

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