
The nearly inexhaustible variety of flow phenomena - from the flow through blood vessels, the flow in centrifugal pumps to global weather events is based on a few basic physical laws only. In this chapter these will be briefly reviewed and their general nature illuminated. Emphasis will be on the phenomena which are of special interest and significance to the pump engineer. Basic knowledge of the terms of fluid dynamics is taken for granted. There is a wealth of textbooks and handbooks on fluid dynamics, only a few can be quoted: [1.1 to 1.7, 1.14].
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