화학공학소재연구정보센터
학회 한국화학공학회
학술대회 2005년 봄 (04/22 ~ 04/23, 여수대학교)
권호 11권 1호, p.678
발표분야 열역학
제목 A Crossover Lattice Fluid Equation of State for Supercritical Fluids
초록 It is well known that the classical lattice fluid equations of state fail to reproduce the non-analytical, singular behavior of fluids in the critical region by long-scale fluctuations in density. Supercritical fluids are characterized by large inhomogeneity of molecular distribution. The density fluctuation is a suitable parameter for quantitative and direct description of the inhomogeneity from the view of mesoscopic or microscopic scale.
In this research we develop a lattice fluid equation of state for supercritical fluids which incorporates the scaling laws asymptotically close to the critical point and its transformed into the classical lattice fluid equations of state far away from the critical point. We show that, over a wide range of states, the crossover lattice fluid equation of state yields a much better representation of the thermodynamic properties of supercritical fluids than the classical lattice fluid equations of state.
저자 신문삼, 정승호, 김화용
소속 서울대
키워드 crossover; lattice; equation of state; supercritical fluids
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