Schematic representation of the two possible situations for the bidisperse maximum packing fraction: (a) Situation ①: The fraction of large particles lies below while the small particles fill the interstices with a fraction of . (b) Situation ②: The large particles occupy a fraction of while the small particles are present in the interstices according to the volume fraction ratio.
Comparison of the model consisting of Eq. (46) for n = 2, Eqs. (56) and (59) with experimental data from Poslinski et al. (1988), , Chong et al. (1971) , and Sweeny (1959) for various total volume fractions ϕ ( ); missing total volume fractions are [ Chong et al. (1971) ] and [ Sweeny (1959) ]; diameter ratios are [ Poslinski et al. (1988) ], [ Chong et al. (1971) ], and [ Sweeny (1959) ], respectively.
Scheme for the calculation of maximum packing fraction and relative viscosity after the ith construction step for n particle size classes with references to the respective equations.
Correlations between relative viscosity and volume fraction ϕ for .
Values of the second-order intrinsic viscosity taken from the literature.
Scheme for the volume fractions during the construction process (SC = size class).
Notation for the maximum packing fraction during the construction process (SC = size class); the arrows indicate that the far right values are calculated recursively from the previous values (for details of the calculation, see Sec. IV E ).
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