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Unit operation models

A short comparison of the most prominent unit operation model features is given in Table 1.

Table 1 Supported features of the different unit operations models

Unit operation model	Radial dispersion	Pore diffusion	Film diffusion	Particle geometries	Multiple particle types
General rate model (GRM)	×	✓	✓	✓	✓
Lumped rate model with pores (LRMP)	×	×	✓	✓	✓
Lumped rate model without pores (LRM)	×	×	×	×	×
Two Dimensional General rate model (GRM2D)	✓	✓	✓	✓	✓
Continuous stirred tank reactor model (CSTR)	×	×	×	×	✓
Multichannel Transport model (MCT model)	×	×	×	×	×

Moreover, the pseudo unit operations Inlet, and Outlet act as sources and sinks for the system. We further note that radial flow model variants are available for the LRM, LRMP and GRM.