Flume experiments with a scale-model of a wave driven seawater pump in monochromatic waves are described. A tuning mechanism optimises the pump performance by keeping it at resonance with the waves. The pumping process itself was found to de-tune the system because of the reduced gravity restoring force due to spilling in the compression chamber. A perturbation analysis of the pump equations shows that performance of the system can be increased by optimising the shape of the pump intake to minimise losses due to vortex formation. An algorithm is derived, using a numerical model of the pump, which accurately determines the wave frequency, the wave height and the tides. A sustainable development project to use the required volume of air in the compression chamber to induce resonance given in a seawater pump to manage fisheries at a coastal lagoon in Mexico is described.
Hydrodynamics of an oscillating water column seawater pump. Part II: tuning to monochromatic waves
Hydrodynamik einer mit einer schwingenden Wassersäule arbeitenden Meerwasserpumpe, Teil II: Abstimmung auf die Resonanzfrequenz
Ocean Engineering ; 27 , 11 ; 1199-1219
2000
21 Seiten, 9 Bilder, 1 Tabelle, 10 Quellen
Aufsatz (Zeitschrift)
Englisch
Meerwasserpumpe , Wellenenergiewandler , Schwingungssystem , mechanische Schwingung , harmonische Schwingung , Eigenschwingung , Störungsrechnung , Schwerkraft , Luftpolster , mathematisches Modell , Welle (Meer) , Volumen , Lagune , Modellversuch , Theorie-Experiment-Vergleich , mechanisches Modell , Abstimmen (Frequenz) , Rohreinlaufströmung
Transformation of Monochromatic Waves from Deep to Shallow Water
HENRY – Bundesanstalt für Wasserbau (BAW) | 1980
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