Mach number at outlet plane of a straight micro-tube-Reference-Cited by-同舟云学术

Mach number at outlet plane of a straight micro-tube

Published:2016-08-09 Issue:19 Volume:230 Page:3420-3430
ISSN:0954-4062
Container-title:Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science
language:en
Short-container-title:Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science

Author:

Kawashima D¹,Yamada T²,Hong C³,Asako Y⁴

Affiliation:

1. Department of Mechanical Engineering, Tokyo Metropolitan University, Tokyo, Japan

2. Department of Mechanical Engineering, Nagoya Institute of Technology, Aichi, Japan

3. Department of Mechanical Engineering, Kagoshima University, Kagoshima, Japan

4. Malaysia-Japan International Institute of Technology, University Technology Malaysia, Kuala Lumpur, Malaysia

Abstract

The Mach number and pressure at 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 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 at the outlet plane of the choked 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.

Publisher

SAGE Publications

Subject

Mechanical Engineering

Link

http://journals.sagepub.com/doi/pdf/10.1177/0954406215614598

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