ABSTRACT
The hydraulic engineer’s concerns are liquids, their motion and their interaction with conveyances and structures. The science of hydraulics thus works with the real liquids of engineering interest, although it owes much to the laws derived in theoretical hydromechanics for ideal liquids. The term model is used in hydraulics to describe a physical or mathematical simulation of a ‘prototype’, or field-size situation. A numerical model is an approximation of a mathematical model of some prototype situation, giving a computable set of parameters that describes the flow at a set of discrete points. A mathematical model is a set of algebraic and differential equations that represents the interaction between the flow and process variables in space and time. A computational model is an implementation of a numerical model on a computer system with the relevant data from a specific site. Many computational modelling systems and packages are available for a variety of hydraulic engineering problems.
