Cong HAN, Huiping FU, Ning MA, Chenjun YANG. Optimization of pre-swirl stators based on CFD for a chemical product carrier[J]. Chinese Journal of Ship Research, 2017, 12(1): 78-83. doi: 10.3969/j.issn.1673-3185.2017.01.012
Citation: Cong HAN, Huiping FU, Ning MA, Chenjun YANG. Optimization of pre-swirl stators based on CFD for a chemical product carrier[J]. Chinese Journal of Ship Research, 2017, 12(1): 78-83. doi: 10.3969/j.issn.1673-3185.2017.01.012

Optimization of pre-swirl stators based on CFD for a chemical product carrier

doi: 10.3969/j.issn.1673-3185.2017.01.012
  • Received Date: 2016-04-28
    Available Online: 2016-12-28
  • Publish Date: 2017-01-07
    © 2017 The Authors. Published by Editorial Office of Chinese Journal of Ship Research. Creative Commons License
    This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
  • The viscous self-propulsion flow fields of a model-scaled 55k DWT chemical product carrier fitted with a rudder-bulb-fin and a pre-swirl stator are numerically simulated based on the CFD general code FLUENT. The energy saving effects of stators are evaluated through the increase of propulsive efficiency. It is found that the computed changing tendencies of almost all self-propulsion factors after being equipped with a stator are the same as in the experiments, such as a decreased revolution rate, increased thrust deduction and mean wake. A wake energy analysis is also conducted to verify the energy-saving effects of stators, and it shows that the stator decreases the flow of kinetic energy behind the propeller through its contra-propeller pre-swirl. Next, an optimization of pre-swirl stators is conducted by CFD. Aside from the prototype stator, three modified stators are designed and the self-propulsion characteristics with these stators are also numerically simulated. The increase order of the evaluated energy-saving effects of these modified stators is seen to be the same as in the design idea. The case with the highest propulsive efficiency shows the largest increase of Ktotal before the propeller and the largest decrease of Ktotal behind the propeller relative to cases without stators.
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