Johannessen, Jahn TerjeJahn TerjeJohannessenSileo, LuciaLuciaSileoKoushan, KouroshKouroshKoushanKrasilnikov, VladimirVladimirKrasilnikovFroitzheim, SimonSimonFroitzheimSchulze, ReinhardReinhardSchulze2024-04-172024-04-172024-04-048th International Symposium on Marine Propulsors (smp 2024)978-82-691120-5-4https://hdl.handle.net/11420/46459The authors conducted development and analyses of a new series of contrarotating propellers (CRP) as part of a research project funded partly by the Norwegian Research Council and led by the propeller manufacturer Brunvoll. The paper describes the initial investigation for choosing the design matrix, method used for the design of the propeller geometries, potential and CFD based numerical analyses, and open water as well as cavitation model experimental investigations. The main idea behind this new series is to utilize the capability that rate of revolution of the fore and aft propellers can be adjusted independently providing more operational flexibility and better overall efficiency over a wide range of operational conditions. Initial designs were performed using a numerical tool based on potential flow; however, some designs were refined based on analyses performed using CFD. A set of propellers were tested both at SINTEF Ocean and SVA Potsdam. The paper presents the methodology used for the design as well as numerical and experimental investigation of this series. Results are provided graphically. Comparison between results from different numerical methods and the model tests are shown and possible deviations are discussed.enhttp://rightsstatements.org/vocab/InC/1.0/Contrarotating propellerspotential methodsCFDmodel testsEngineering and Applied OperationsConference Paper10.15480/882.932210.15480/882.932210.15480/882.9294Conference Paper