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Published on: May 15, 2017
Intruder-induced change in condensation temperature of granular gases
Kuo-Ching Chen1, Wan-Lin Hsieh, Chi-Hao Lin
1Institute of Applied Mechanics, National Taiwan University, Taipei 106, Taiwan.
Abstract:
The process from a gaseous state to a clustering state for a compartmentalized monodisperse granular gas is accompanied by a drop in the granular temperature to a condensation point. We show experimentally that adding an intruder generally results in a decrease in the condensation point, and a heavier intruder makes this decrease more pronounced. However, once the Brazil nut effect (the intruder on the top of clustering grains) occurs, the condensation point will rise. Through the balance of particle fluxes and the hydrodynamic balance of driving forces, we analytically calculated the condensation point for the monodisperse gases and the intruder-fluid mixtures. The analytical results match the experimental data.
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