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Prediction of the Transom Flow Regime with Viscous Free Surface Computations

  • Auke van der Ploeg
  • Bram Starke
Part of the Computational Methods in Applied Sciences book series (COMPUTMETHODS, volume 29)

Abstract

A steady free-surface fitting RANS method is used to accurately and efficiently compute the flow near a ship’s transom. The chosen block topology is very well suited for the prediction of such flows: viscous free-surface flow solutions have been obtained for all transom flow regimes (from completely dry, partly wetted to completely wetted) and the agreement with available measurements is good. We will show that scale effects on the flow aft of the transom can be significant: they can affect the wave length and wave amplitude aft of the transom, and can even change the transom flow regime from partly wetted to completely dry.

Keywords

Computational fluid dynamics Transom sterns Scale effects 

References

  1. 1.
    Van Brummelen EH, Raven HC, Koren B (2001) Efficient numerical solution of steady free-surface Navier-Stokes flow. J Comput Phys 174:120–137 MathSciNetzbMATHCrossRefGoogle Scholar
  2. 2.
    Dacles-Mariani J, Zilliac GG, Chow JS, Bradshaw P (1995) Numerical/experimental study of a wingtip vortex in the near field. AIAA J 33(9):1561–1568 CrossRefGoogle Scholar
  3. 3.
    Hoekstra M (1999) Numerical simulation of ship stern flows with a space-marching Navier Stokes method. Thesis, Technical University of Delft Google Scholar
  4. 4.
    Karafiath G, Cusanelli D, Cheng WL (1999) Stern wedges and stern flaps for improved powering—U.S. Navy experience. In: Sname annual meeting, Baltimore Google Scholar
  5. 5.
    Menter FR (1994) Two-equation eddy-viscosity turbulence models for engineering applications. AIAA J 32:1598–1605 CrossRefGoogle Scholar
  6. 6.
    Menter (1997) Eddy viscosity transport equations and their relation to the kε model. J Fluid Eng 119:876–884 CrossRefGoogle Scholar
  7. 7.
    Van der Ploeg A, Hoekstra M, Eça L (2000) Combining accuracy and efficiency with robustness in ship stern flow computation. In: 23rd symp naval hydrodynamics, Val de Reuil, France Google Scholar
  8. 8.
    Van der Ploeg A, Chao K, Marzi J, Wackers J (2010) Computation of scale effects in free-surface flows near a ship’s transom. In: 13th numerical towing tank symposium, Duisburg, Germany, October, 2010 Google Scholar
  9. 9.
    Raven HC, Van der Ploeg A, Starke AR (2004) Computation of free-surface viscous flows at model and full scale by a steady iterative approach. In: 25th symposium on naval hydrodynamics. St. John’s, Newfoundland, Canada, August 2004 Google Scholar
  10. 10.
    Starke AR, Raven HC, Van der Ploeg A (2007) Computation of transom-stern flows using a steady free-surface fitting RANS method. In: 9th int conference on numerical ship hydrodynamics, Ann Arbor, Michigan, August 5–8, 2007 Google Scholar
  11. 11.
    Starke AR, Van der Ploeg A, Raven HC (2010) Viscous free surface flow computations for self-propulsion conditions using parnassos. In: CFD workshop Gothenburg Google Scholar

Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  1. 1.Maritime Research Institute Netherlands (MARIN)WageningenThe Netherlands

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