Molecular dynamics simulation of helium–argon gas mixture under various wall conditions
| Autor: | Fatih Erdogan Sevilgen, İlyas Kandemir |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Argon
General Chemical Engineering chemistry.chemical_element Thermodynamics General Chemistry Condensed Matter Physics Kinetic energy Molecular dynamics chemistry Modeling and Simulation Heat transfer Compressibility General Materials Science Diffusion (business) Couette flow Helium Information Systems |
| Zdroj: | Molecular Simulation. 34:795-808 |
| ISSN: | 1029-0435 0892-7022 |
| DOI: | 10.1080/08927020802275785 |
| Popis: | As computational capabilities increase, molecular dynamics (MD) simulations become important tools of simulating reality. These simulations are especially useful for compressible gas mixture problems. In this study, binary diffusion of helium and argon was examined using a hard-sphere MD simulation method. For the sake of computational speed, low spacing ratios were chosen. Binary mass diffusion of gases in two equally sized halves of a box was simulated for identical initial kinetic energies and number densities. It has been noted that a purely mass diffusion mechanism of different gases is not physically possible. The resultant gas mixtures of several diffusion simulations were used as initial conditions for combined heat transfer – Couette flow, and heating and cooling experiments. The results showed the interesting behaviour of the mixture, which was subjected to various wall conditions. Energy of heavier molecules is found to be more sensitive to the wall velocities and less sensitive to the wall tem... |
| Databáze: | OpenAIRE |
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