Fig.G-3
Interference - an important phenomenon limiting the applicability of system approach. If there are two resistors or other restrictive elements (in the shown example there are two sharp pipe bends) close to each other, they interfere mutally so that - depending upon ther spatial orientation and separation, as shown in the diagram - the resultat drag coefficient
may be either larger (case a) or smaller (case b) than simple sum of a single bend.
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Fig.G-4 |
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Fig.G-5 |
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Gustav Robert Kirchhoff Born: 12 March 1824 in Konigsberg, Prussia Died: 17 Oct 1887 in Berlin, Germany The Kirchhoff laws, first announced 1854 were originally intended for computations of electric circuits. The analogical behaviour of hydraulic and pneumatic systems was dis- covered much later. |
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Vaclav TESAR : "BASIC FLUID MECHANICS"