Nicholson

A7 Ethane/methane selectivity calculated from grand canonical Monte Carlo simulations of mixtures in slit IS at a temperature of 296 K. The selectivity is defined as the ratio of the mole fractions in the pore to the ratio of mole fractions in the bulk. H is the slit width defined in terms of the methane collision diameter (Tch,- (Figure awn from Crackncll R F, D Nicholson and N Quirke 1994. A Grand Canonical Monte Carlo Study ofLennard-s Mixtures in Slit Pores 2 Mixtures of Two-Centre Ethane with Methane. Molecular Simulation 13 161-175.)... 

R. A. Brown, J. A. Nicholson, M. D. Jackson, and C. Sullivan, "Methanol-Pueled Heavy-Duty Tmck Engine AppHcations The CEC Program." V4E Paper 890972, SyPE 40th yinnualEarthmoving Industj Conf. (Peoria, lU., April 11—13,1989) Society of Automotive Engineers, Warrendale, Pa. 

The Grank-Nicholson implicit method and the method of lines for numerical solution of these equations do not restrict the racial and axial increments as Eq. (P) does. They are more involved procedures, but the burden is placed on the computer in all cases. 

The implicit Crank-Nicholson integration method was used to solve the equation. Radial temperature and concentrations were calculated using the Thomas algorithm (Lapidus 1962, Carnahan et al,1969). This program allowed the use of either ideal or non-ideal gas laws. For cases using real gas assumptions, heat capacity and heat of reactions were made temperature dependent. 

Figure 4.22 Transient loads may be many times the static load in operation (Nicholson et al., 1993)...

---