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Numerical simulations of the hydrodynamic performance of the propeller with wake equalizing duct behind the ship

Rezaei, S ; Sharif University of Technology | 2022

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  1. Type of Document: Article
  2. DOI: 10.24200/sci.2022.58440.5723
  3. Publisher: Sharif University of Technology , 2022
  4. Abstract:
  5. The equalizing wake flow into the propeller behind the ship is important from the hydrodynamic performance viewpoint. In this study, numerical simulations of the DTMB4119 propeller with two symmetric and asymmetric duct types behind the KRISO Container Ship (KCS) are performed using Computational Fluid Dynamics (CFD). In order to improve the wake equaling flow, a combined duct and stators' configurations are installed before the propeller in the stern of the ship and its hydrodynamic performance is studied using CFD. A duct with the NACA4415 section and two types of stator configurations are selected. The STAR-CCM+ software using the finite volume discretization method was used to solve the governing equations of the fluid flow. For simulating the turbulence model, the standard k-ω model was used and the solution method was validated in comparison with the available experimental data. Output parameters including thrust coefficient and torque coefficient in the open-water condition and behind the ship are presented and discussed. The propeller performance after mounting the asymmetric and symmetric ducts are improved by 4.8% and 6.57%, respectively. Therefore, it is concluded that the symmetric duct is more affected by the propeller performance and, hence, fuel consumption is reduced considerably. © 2022 Sharif University of Technology. All rights reserved
  6. Keywords:
  7. DTMB4119 propeller ; KRISO Container Ship (KCS) ; Pre-swirl stator ; Propeller performance ; Symmetric and asymmetric ducts ; Wake equalizing duct ; Computational fluid dynamics ; Containers ; Ducts ; Equalizers ; Hydrodynamics ; Numerical models ; Propellers ; Quadratic programming ; Ship propulsion ; Ships ; Stators ; Turbulence models ; Vehicle performance ; Wakes ; Container ships ; Dtmb4119 propeller ; KRISO container ship ; Performance ; Pre-swirl ; Symmetric and asymmetric duct ; Symmetrics ; Finite volume method ; Container ship ; Numerical model ; Performance assessment ; Simulation ; Wake
  8. Source: Scientia Iranica ; Volume 29, Issue 5 B , 2022 , Pages 2332-2348 ; 10263098 (ISSN)
  9. URL: https://scientiairanica.sharif.edu/article_22836.html