| Issue |
MATEC Web Conf.
Volume 108, 2017
2017 International Conference on Mechanical, Aeronautical and Automotive Engineering (ICMAA 2017)
|
|
|---|---|---|
| Article Number | 12002 | |
| Number of page(s) | 5 | |
| Section | Applied Mechanics and Dynamics | |
| DOI | https://doi.org/10.1051/matecconf/201710812002 | |
| Published online | 31 May 2017 | |
Molecular Clustering and Velocity Increase in Converging-Diverging Nozzle in MD Simulation
1 R&D Department of NaJen, Co. LTD, Korea
2 Dept. of Computer Engineering, Hoseo University, Asan Korea
A Molecular dynamics simulation in a converging-diverging nozzle was performed to study molecular collisions and their influence to average flow velocity according to a variety of vacuum levels. The static pressures and the dynamic pressure exerted by the molecule collision on the selected walls were compared to figure out the intensity variances of the directional flows. With pressure differences constant between the entrance and the exit of the nozzle, The numerical experiment was performed for molecular velocities and directional flows. The result shows that the velocities are increased at the nozzle exit as the vacuum level gets higher in that area because of less molecular collisions
© The Authors, published by EDP Sciences, 2017
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