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Abstract
We investigate unidirectional rarefied flows confined between two infinite parallel plates with specified heat flux boundary conditions. Both Couette and force-driven Poiseuille flows are considered. The flow behaviors are analyzed numerically by solving the Shakhov model of the Boltzmann equation. We find that a zero-heat-flux wall can significantly influence the flow behavior, including the velocity slip and temperature jump at the wall, especially for high-speed flows. The predicted bimodal-like temperature profile for force-driven flows cannot even be qualitatively captured by the Navier-Stokes-Fourier equations.
Original language | English |
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Pages (from-to) | 1185-1200 |
Number of pages | 16 |
Journal | Communications in computational physics |
Volume | 17 |
Issue number | 5 |
DOIs | |
Publication status | Published - 3 Jun 2015 |
Keywords / Materials (for Non-textual outputs)
- thermal boundary condition
- rarefied gas flow
- S model
- discrete velocity method
- Boltzmann equation
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Dive into the research topics of 'Numerical simulation of rarefied gas flows with specified heat flux boundary conditions'. Together they form a unique fingerprint.Projects
- 2 Finished
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The First Open-Source Software for Non-Continuum Flows in Engineering
Reese, J. (Principal Investigator) & Borg, M. (Researcher)
1/10/13 → 31/03/18
Project: Research
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Non-Equilibrium Fluid Dynamics for Micro/Nano Engineering Systems
Reese, J. (Principal Investigator), Lockerby, D. A. (Co-investigator), Emerson, D. R. (Co-investigator) & Borg, M. (Researcher)
1/01/11 → 16/02/16
Project: Project from a former institution