A DSMC solver, adapted to the subsonic micro flow, is developed under the object-conception language (C++). Some technical details critical in these DSMC computations are provided. The numerical simulations of gas flow in micro channel are carried out using developed DSMC solver. Streamwise velocity distributions in the slip flow regime are compared with the analytical solution based on the Navier-Stokes equations with the velocity slip boundary condition. Satisfactory agreements have been achieved. Furthermore, the domain of the validity of this continuum approach is discussed. Simulations are then extended to transitional flow regime. Streamwise velocity distributions are also compared with the results of the numerical solutions of the linearized Boltzmann equation. We emphasize the influence of the accommodation coefficient on the velocity profiles and on the mass flow rate. The simulation results on the mass flow rate are compared with the experimental data, that allow us to validate the “experimental” technique of the determination of the accommodation coefficient.
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ASME 2009 7th International Conference on Nanochannels, Microchannels, and Minichannels
June 22–24, 2009
Pohang, South Korea
Conference Sponsors:
- Nanotechnology Institute
ISBN:
978-0-7918-4349-9
PROCEEDINGS PAPER
DSMC Simalation of the Pressure and Temperature Driven Flows: Comparison With the Measurements
Timothe´e Ewart,
Timothe´e Ewart
Institut de Me´canique des Fluides de Toulouse, Toulouse, France
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Irina A. Graur,
Irina A. Graur
Universite´ de Provence, Marseille, France
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Jean-Luc Firpo,
Jean-Luc Firpo
Universite´ de Provence, Marseille, France
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Alexey Polikarpov,
Alexey Polikarpov
Universite´ de Provence, Marseille, France
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Pierre Perrier,
Pierre Perrier
Universite´ de Provence, Marseille, France
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J. Gilbert Me´olans
J. Gilbert Me´olans
Universite´ de Provence, Marseille, France
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Timothe´e Ewart
Institut de Me´canique des Fluides de Toulouse, Toulouse, France
Irina A. Graur
Universite´ de Provence, Marseille, France
Jean-Luc Firpo
Universite´ de Provence, Marseille, France
Alexey Polikarpov
Universite´ de Provence, Marseille, France
Pierre Perrier
Universite´ de Provence, Marseille, France
J. Gilbert Me´olans
Universite´ de Provence, Marseille, France
Paper No:
ICNMM2009-82246, pp. 441-448; 8 pages
Published Online:
September 21, 2010
Citation
Ewart, T, Graur, IA, Firpo, J, Polikarpov, A, Perrier, P, & Me´olans, JG. "DSMC Simalation of the Pressure and Temperature Driven Flows: Comparison With the Measurements." Proceedings of the ASME 2009 7th International Conference on Nanochannels, Microchannels, and Minichannels. ASME 2009 7th International Conference on Nanochannels, Microchannels and Minichannels. Pohang, South Korea. June 22–24, 2009. pp. 441-448. ASME. https://doi.org/10.1115/ICNMM2009-82246
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