Energy balance analysis of model-scale vessel with open and ducted propeller configuration

OCEAN ENGINEERING

卷:167

Article

Andersson, Jennie¹  Eslamdoost, Arash¹  Vikstrom, Marko²  Bensow, Rickard E.¹ 

[1] Chalmers Univ Technol, Dept Mech & Maritime Sci, S-41296 Gothenburg, Sweden

[2] Rolls Royce AB, Rolls Royce Hydrodynam Res Ctr, Kristinehamn, Sweden

关键词: Hull-propulsion system interaction;    RANS;    Energy balance;    Hydrodynamic losses;    Ducted propeller;   

DOI  :  10.1016/j.oceaneng.2018.08.047

来源: Elsevier

【 摘 要 】

This paper focuses on performance analysis of a model scale vessel equipped with an open versus a ducted propeller in self-propulsion using a control volume analysis of energy, applied on Computational Fluid Dynamics (CFD) results. An energy balance analysis decompose the delivered power for each system into internal and turbulent kinetic energy fluxes, i.e. viscous losses, transverse kinetic energy losses, and pressure work and axial kinetic energy fluxes. Such a decomposition can facilitate understanding of system performance and pinpoint enhancement possibilities. For this specific case it is shown that the much higher required power for the ducted propeller configuration to the largest extent is due to higher viscous losses, caused by mainly propeller duct and different rudder configuration. The energy balance analysis is a post-processing tool with the only additional requirement of solving the energy equation, which can be employed with any CFD-code based on commonly available variables.

【 授权许可】

Free