نتایج جستجو برای: effective diffusion coefficient

تعداد نتایج: 981715  

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2005
mahmoud bayat abbas taeb saeed rastegar

the kinetic of the heterogeneous chemical reaction of aluminum hydroxide and fluosilicic acid was studied. it was found that the diffusion of the reactants through the porous silica coating to the aluminum hydroxide surface and the interfacial chemical reaction between the diffusing reactant and aluminum hydroxide platelets control the overall reaction rate. these two phenomena were studied and...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2012
mahdi esmailbeygi fariborz rashidi

gas reservoirs with low permeability (k

2011
Hongyun Wang

We study the stochastic motion of a Brownian particle driven by a constant force over a static periodic potential. We show that both the effective diffusion and the effective drag coefficient are mathematically well-defined and we derive analytic expressions for these two quantities. We then investigate the asymptotic behaviors of the effective diffusion and the effective drag coefficient, resp...

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