The investigation of the behaviour of propeller cavitation in the wake field of a vessel and measurement of propeller-induced pressure pulses [2] – [6] are carried out in the large test section of the cavitation tunnel. The typical experimental setup for a single-screw vessel is shown in the schematic diagram. The propeller is driven by the dynamometer H36 by Kempf & Remmers. The simulation of the wake, calculated for a Reynolds Number of the full-scale ship, is done with a dummy model and additional grids. The dummy models are up to 2.60 m long and geometrically similar to the ship in the stern area. The blocking of the measuring cross section is within the range between 10 to 22 %. High-Speed recordings of cavitating propulsion systems can be found here.
Context Related References / Research Projects
[1] Potsdam Propeller Test Case: https://www.sva-potsdam.de/en/potsdam-propeller-test-case-pptc
[2] Schmidt, D.: Propellererregte Druckschwankungen an Frachtschiffen mit großen langsamlaufenden Propellern, Schiffbauforschung 26 (1987) 3
[3] Selke, W., Heinke, H.-J.: Propelleruntersuchungen im Kavitationstunnel der Schiffbau-Versuchsanstalt Potsdam, Jahrbuch der STG, 84. Band, 1990
[4] Schmidt, D., Selke, W., Gerchev, G.: Comparative Joint Investigations in the Cavitation Tunnels of SVA and BSHC on the Prediction of Propeller-Induced Pressure Pulses, Schiffbauforschung 31(1992)1
[5] Heinke, H.-J.: Einfluss des Nachstroms auf die Kavitation und Druckschwankungen eines Propellers, 13. SVA-Forum, Potsdam, 29. August 2006
[6] Heinke, H.-J.: The Influence of Test Parameters and Wake Field Simulation on the Cavitation and the Propeller Induced Pressure Fluctuations
Jahrbuch der Schiffbautechnischen Gesellschaft, 97. Band, 2003