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 μm. 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.
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ASME 2013 International Mechanical Engineering Congress and Exposition
November 15–21, 2013
San Diego, California, USA
Conference Sponsors:
- ASME
ISBN:
978-0-7918-5631-4
PROCEEDINGS PAPER
Mach Number on Outlet Plane of a Straight Micro-Tube Available to Purchase
Y. Asako,
Y. Asako
Tokyo Metropolitan University, Tokyo, Japan
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D. Kawashima,
D. Kawashima
Tokyo Metropolitan University, Tokyo, Japan
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C. Hong
C. Hong
Kagoshima University, Kagoshima, Japan
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Y. Asako
Tokyo Metropolitan University, Tokyo, Japan
D. Kawashima
Tokyo Metropolitan University, Tokyo, Japan
T. Yamada
Lund University, Lund, Sweden
C. Hong
Kagoshima University, Kagoshima, Japan
Paper No:
IMECE2013-64188, V07AT08A020; 7 pages
Published Online:
April 2, 2014
Citation
Asako, Y, Kawashima, D, Yamada, T, & Hong, C. "Mach Number on Outlet Plane of a Straight Micro-Tube." Proceedings of the ASME 2013 International Mechanical Engineering Congress and Exposition. Volume 7A: Fluids Engineering Systems and Technologies. San Diego, California, USA. November 15–21, 2013. V07AT08A020. ASME. https://doi.org/10.1115/IMECE2013-64188
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