Journal of Flow Visualization and Image Processing

ISSN for PRINT: 1065-3090

For Online Access

Best Paper Award Selection - Editorial Board Site

2005, Volume12

Issue 1

106 pages

DOI: 10.1615/JFlowVisImageProc.v12.i1

Issue price - $154.00

Pei-Yuan Tzeng
Department of Aeronautical Engineering, Chung Cheng Institute of Technology, National Defense University Ta-Hsi, Tao-Yuan 33509, Taiwan, ROC

Ping-Hsuang Chen
Chung Cheng Institute of Technology, National Defense University Ta-Hsi, Tao-Yuan 33509, TAIWAN, R.O.C.

Ming-Ho Liu
Chung Cheng Institute of Technology, National Defense University Ta-Hsi, Tao-Yuan 33509, TAIWAN, R.O.C.

Pressure-driven low subsonic gaseous flows in a microchannel are studied numerically by the Direct Simulation Monte Carlo (DSMC) method. The Variable Hard Sphere (VHS) molecular model and Larsen—Borgnakke procedures are adopted. The Knudsen number (Kn) is adjusted by varying inlet/outlet pressure for a range of transition regimes. Cases of different channel aspect ratios and wall temperatures with the fixed inlet/outlet pressure or constant average pressure-gradient boundary conditions are investigated. The results indicate that both the channel length and heat transfer affect the rarefaction of the flow. The downstream variations in flow properties are strongly dependent on Kn, aspect ratio, and heat transfer, and generally are in qualitative agreement with the Fanno/Rayleigh theory.

DOI: 10.1615/JFlowVisImageProc.v12.i1.60 Download article, 73-94 pages

Article price - $35.00

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