This video introduces the definition and concept of Steady / Unsteady flow and Uniform / Nonuniform flow in hydraulics and fluid dynamics. These are the main ways in which we can characterise flows. This topic is extremely important, as we need to understand the type of flow we are dealing with so we know if the equations we are applying to that flow are valid.

The lesson includes demonstrations using a model flume, worked examples of the theory and real world examples to show how the theory relates to real flows.

Footage of the real world examples are shot at The River Dysynni and the Nant Gwernol Ravine in Wales.