Energy balance analysis of model-scale vessel with open and ducted propeller configuration
| Autor: | Marko Vikström, Jennie Andersson, Arash Eslamdoost, Rickard Bensow |
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| Rok vydání: | 2018 |
| Předmět: |
Environmental Engineering
business.industry Energy balance 020101 civil engineering Ocean Engineering 02 engineering and technology Mechanics Rudder Computational fluid dynamics Kinetic energy 01 natural sciences Control volume 010305 fluids & plasmas 0201 civil engineering Physics::Fluid Dynamics Ducted propeller 0103 physical sciences Turbulence kinetic energy Environmental science business Reynolds-averaged Navier–Stokes equations |
| Zdroj: | Ocean Engineering. 167:369-379 |
| ISSN: | 0029-8018 |
| DOI: | 10.1016/j.oceaneng.2018.08.047 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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