Journal
PHYSICAL REVIEW E
Volume 99, Issue 5, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevE.99.052137
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Funding
- Department of Mathematics, National Cheng Kung University
- National Center for Theoretical Sciences (NCTS), National Taiwan University
- JSPS Invitation Fellowship Short-term FY2015 [S15064]
- [MOST 105-2115-M-006-002]
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A kinetic theory model describing physisorption and chemisorption of gas particles on a crystal surface is introduced. A single kinetic equation is used to model gas and physisorbed particles interacting with a crystal potential and colliding with phonons. The phonons are assumed to be at equilibrium and the physisorbategas equation is coupled to similar kinetic equations describing chemisorbed particles and crystal atoms on the surface. A kinetic entropy is introduced for the coupled system and the H theorem is established. Using the Chapman-Enskog method with a fluid scaling, the asymptotic structure of the adsorbate is investigated and fluid boundary conditions are derived from the kinetic model.
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