Free surface flow simulation around an appended ship hull

Yavuz Hakan Ozdemir, Baris Barlas

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

This study brings forward the results of previously published work of free surface flow simulation around a fast ship model. Experimental measurements and numerical simulations of a fast bare-hull ship model form are now extended to the same ship form with appendices for a wide range of Froude numbers. The governing equations are discretized by means of an unstructured finite volume mesh. The standard k-ε turbulence model and Volume of Fluid Method to capture the two phase media are used. The total resistance, due to wave and wake fields of the ship model with appendages and the resistance of the appendages alone are calculated numerically, and compared with the experiments. The experiments and computations were performed for 11 different Froude numbers between 0.103 and 0.322. For Froude numbers up to 0.25, numerical simulations found to be quite in agreement with the experiments. It has been found that appendages increase the total drag mainly by increasing the pressure resistance, and the effect of the appendages becomes more important as the flow speed gets higher.

Original languageEnglish
Pages (from-to)25-41
Number of pages17
JournalBrodogradnja
Volume69
Issue number3
DOIs
Publication statusPublished - Sept 2018

Bibliographical note

Publisher Copyright:
© 2018, Brodarski Institute. All rights reserved.

Keywords

  • Appendages
  • Computational fluid dynamics
  • Experiment
  • K-ε turbulence model
  • Turbulent free surface flows

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