Energy balance analysis of model-scale vessel with open and ducted propeller configuration
Journal article, 2018

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.


Energy balance

Ducted propeller

Hydrodynamic losses

Hull-propulsion system interaction


Jennie Andersson

Chalmers, Mechanics and Maritime Sciences (M2), Marine Technology

Arash Eslamdoost

Chalmers, Mechanics and Maritime Sciences (M2), Marine Technology

Marko Vikström

Rolls-Royce (Swe)

Rickard Bensow

Chalmers, Mechanics and Maritime Sciences (M2), Marine Technology

Ocean Engineering

0029-8018 (ISSN)

Vol. 167 369-379

Analysis and optimisation of marine propulsion systems

Swedish Energy Agency (38849-1), 2014-10-06 -- 2017-09-30.

Rolls-Royce (Swe), 2014-10-06 -- 2017-09-30.

Subject Categories

Energy Engineering

Building Technologies

Other Electrical Engineering, Electronic Engineering, Information Engineering


C3SE (Chalmers Centre for Computational Science and Engineering)



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