TABLE OF CONTENTS A model is defined here as a method or simulation algorithm that has been coded into a computer program for computations and applications. Numerous models have been developed for sewer networks. These sewer models can be classified in different ways as follows:
According to the purpose of the model: ( a) design models hydraulic design, or Optimal design, risk-based design; ( b) evaluation/predictions models, ( c) planning models.
According to the objective of the project: ( a) flood control or ( b) pollution control.
According to the extent of space consideration: ( a) overland surface only, ( b)sewer system only, or ( c) sewer system and overland surface.
According to the nature of wastewater: ( a) sanitary sewer models or ( b) storm and combined sewer models.
According to water-quality considerations: ( a) quantity only, ( b) quality only (rare), or ( c) quantity and quality.
According to time considerations of rainfall input: ( a) single-event models or ( b) multiple-event continuous models.
According to probability considerations: ( a) deterministic or ( b) probabilistic pure statistical or stochastic.
According to systems concept: ( a) lumped system or ( b) distributed system.
According to hydrologic principles considered: ( a) hydrologic (principle of mass conservation) or ( b) hydraulic (principles of conservation of mass and momentum or...
