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DSMC simulation of heat transfer in subsonic rarefied gas flows through micro/nanochannels imposing a constant inflow/wall temperature difference
Darbandi, M ; Sharif University of Technology
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- Type of Document: Article
- Abstract:
- We use the direct simulation Monte Carlo (DSMC) method and investigate the subsonic rarefied gas flow through micro/nanochannels, imposing a constant pressure ratio and a constant temperature difference between the inflow and wall temperature. We further study the heat transfer characteristics of subsonic nitrogen gas flow under this imposed temperature difference. We show that, specifying a higher temperature magnitude would lead to more rarefactions even imposing a fixed temperature difference. This consequently results in a higher wall heat flux rate for a fixed inflow-wall temperature difference. Our investigating shows that the number of simulated particles need to increase suitably if one wishes to avoid statistical fluctuations on the wall heat flux values
- Keywords:
- Constant pressures ; Constant temperature differences ; Direct simulation Monte Carlo method ; Fixed temperature ; Heat transfer characteristics ; Rarefied gas flow ; Statistical fluctuations ; Temperature differences ; Computer simulation ; Fluid dynamics ; Gases ; Heat flux ; Statistical mechanics ; Flow of gases
- Source: 41st AIAA Fluid Dynamics Conference and Exhibit ; 2011 ; 9781600869471 (ISBN)
- URL: http://arc.aiaa.org/doi/abs/10.2514/6.2011-3992