18.1 Some Guidelines for Developing Models18.2 Flow and Axial Dispersion of Inert Tracers in Isothermal Reactors18.3 Flow, Reaction, and Axial Dispersion18.4 Flow, Reaction, and Axial Dispersion in Isothermal Laminar Flow Reactors and Finding Meno18.5 Tanks-in-Series Model versus Dispersion Model18.6 Numerical Solutions to Flows with Dispersion and Reaction18.7 Nonisothermal Flow with Radial and Axial Variations in a Tubular Reactor18.8 Two-Parameter Models—Modeling Real Reactors with Combinations of Ideal Reactors18.9 And Now… A Word from Our Sponsor–Safety 18 (AWFOS–S18 An Algorithm for Management of Change (MoC))SummaryQuestions, Simulations, and ProblemsSupplementary Reading