Poiseuille flow of Lennard-Jones fluids in narrow slit pores

2000 ◽  
Vol 112 (4) ◽  
pp. 1984-1994 ◽  
Author(s):  
Karl P. Travis ◽  
Keith E. Gubbins
Keyword(s):  
Poiseuille Flow ◽  
Narrow Slit ◽  
Lennard Jones ◽  
Slit Pores

Comment on “Observations on an equation of state for water confined in narrow slit-pores” [J. Chem. Phys. 116, 2565 (2002)]

2002 ◽  
Vol 117 (17) ◽  
pp. 8162-8163 ◽  
Author(s):  
Thomas M. Truskett ◽  
Pablo G. Debenedetti ◽  
Salvatore Torquato
Keyword(s):  
Equation Of State ◽  
Chem Phys ◽  
Narrow Slit ◽  
Slit Pores

scholarly journals Low Pressure Hysteresis in Materials with Narrow Slit Pores

2018 ◽  
Vol 2 (4) ◽  
pp. 62 ◽  
Author(s):  
Peter Schiller ◽  
Mirco Wahab ◽  
Thomas Bier ◽  
Hans-Jörg Mögel
Keyword(s):  
Vapor Pressure ◽  
Hysteresis Loops ◽  
Low Pressure ◽  
Macroscopic Model ◽  
Hardened Cement ◽  
Narrow Slit ◽  
Extended Model ◽  
Interaction Range ◽  
Relative Vapor Pressure ◽  
Slit Pores

Humidity-dependent closing and reopening slit pores can produce hysteresis loops in sorption diagrams even at low relative vapor pressure. Pore closing is supported by adhesion of the slit wall surfaces. In a macroscopic model for sorption hysteresis in narrow slits, the adhesion energy jumps by a finite value when touching slit walls are separated from each other. We consider a more realistic adhesion model by introducing a smoothly-varying adhesion force, which depends on the distance between the slit walls. The range of the attraction between the slit walls is found to have a pronounced influence on the shape of hysteresis loops at low vapor pressure. A large interaction range avoids an extraordinarily small relative vapor pressure necessary for pore closing, which is a precondition for low pressure hysteresis. Our extended model allows us to describe a discontinuity, which can appear in the desorption branch of swelling/shrinkage diagrams for hardened cement paste.

Layering, condensation, and evaporation of short chains in narrow slit pores

2005 ◽  
Vol 122 (22) ◽  
pp. 224701 ◽  
Author(s):  
Zhidong Li ◽  
Dapeng Cao ◽  
Jianzhong Wu
Keyword(s):  
Narrow Slit ◽  
Slit Pores

scholarly journals Structural and Dynamical Behaviour of Colloids with Competing Interactions Confined in Slit Pores

2021 ◽  
Vol 22 (20) ◽  
pp. 11050
Author(s):  
Horacio Serna ◽  
Wojciech T. Góźdź ◽  
Eva G. Noya
Keyword(s):  
Hexagonal Phase ◽  
Dynamical Behaviour ◽  
Narrow Slit ◽  
Colloidal Systems ◽  
Pore Width ◽  
Competing Interactions ◽  
Lamellar Phases ◽  
Bulk System ◽  
The One ◽  
Slit Pores

Systems with short-range attractive and long-range repulsive interactions can form periodic modulated phases at low temperatures, such as cluster-crystal, hexagonal, lamellar and bicontinuous gyroid phases. These periodic microphases should be stable regardless of the physical origin of the interactions. However, they have not yet been experimentally observed in colloidal systems, where, in principle, the interactions can be tuned by modifying the colloidal solution. Our goal is to investigate whether the formation of some of these periodic microphases can be promoted by confinement in narrow slit pores. By performing simulations of a simple model with competing interactions, we find that both the cluster-crystal and lamellar phases can be stable up to higher temperatures than in the bulk system, whereas the hexagonal phase is destabilised at temperatures somewhat lower than in bulk. Besides, we observed that the internal ordering of the lamellar phase can be modified by changing the pore width. Interestingly, for sufficiently wide pores to host three lamellae, there is a range of temperatures for which the two lamellae close to the walls are internally ordered, whereas the one at the centre of the pore remains internally disordered. We also find that particle diffusion under confinement exhibits a complex dependence with the pore width and with the density, obtaining larger and smaller values of the diffusion coefficient than in the corresponding bulk system.

scholarly journals Adsorption and interfacial phenomena of a Lennard-Jones fluid adsorbed in slit pores: DFT and GCMC simulations

2018 ◽  
Vol 116 (21-22) ◽  
pp. 3417-3424
Author(s):  
J. M. Míguez ◽  
P. Gómez-Álvarez ◽  
M. M. Piñeiro ◽  
B. Mendiboure ◽  
F. J. Blas
Keyword(s):  
Interfacial Phenomena ◽  
Lennard Jones ◽  
Gcmc Simulations ◽  
Slit Pores
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