IP-DSMC method for micro-scale flow with temperature variation

Based on the IP-DSMC method, a simple and effective temperature model is presented. By the developed IP-DSMC method with new temperature model, non-isothermal micro-flow is simulated. Comparing the developed IP results with the DSMC results, the correctness and effectiveness of the new temperature m...

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Bibliographic Details
Published in:Applied mathematical modelling 2011-04, Vol.35 (4), p.2016-2023
Main Authors: Yao, Zhao-Hui, Zhang, Xi-wen, Xue, Xiao-Bo
Format: Article
Language:English
Subjects:
Applied fluid mechanics
Exact sciences and technology
Fluid dynamics
Fluidics
Fundamental areas of phenomenology (including applications)
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
IP method
Low flow
Mechanical instruments, equipment and techniques
Micro-scale
Micromechanical devices and systems
Physics
Temperature variation flow
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Summary:Based on the IP-DSMC method, a simple and effective temperature model is presented. By the developed IP-DSMC method with new temperature model, non-isothermal micro-flow is simulated. Comparing the developed IP results with the DSMC results, the correctness and effectiveness of the new temperature model are validated. Through simulating the orifice flow, it is found that it will cause numerical divergence if the second order central difference scheme of the mass conservation equation is used to update the information density when the local density gradient of the simulated flow is large. So the first order upwind scheme is recommended to update the information density.
ISSN:0307-904X
DOI:10.1016/j.apm.2010.11.013