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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)	×	×	×	×	✓

Moreover, the pseudo unit operations Inlet, and Outlet act as sources and sinks for the system.