Advertisement

Some Results from a New Time-Domain Bilge Keel Force Model

  • David S. GreeleyEmail author
Chapter
Part of the Fluid Mechanics and Its Applications book series (FMIA, volume 119)

Abstract

A new non-linear, time domain bilge keel force model was recently developed for inclusion in the new time-domain seakeeping/maneuvering in waves code TEMPEST, being developed by NSWCCD. This bilge keel force model combines a full unsteady extension of Bollay’s non-linear low aspect ratio lifting surface theory for cases with adequate forward speed with a more conventional approach for cases with zero or low forward speed, using Morison’s equation. This paper presents some representative results from the new bilge keel force model for a surface combatant for various roll amplitudes, roll periods, and forward speeds.

Keywords

Bilge-keel forces Time-domain seakeeping Unsteady lifting surface theory 

Notes

Acknowledgements

The development of the bilge keel model referred to in this paper was done initially with support from NAVSEA SE/TA funds (James Webster, Program Manager) and later support from ONR (Dr. Pat Purtell, Program Manager). Dr. William Belknap and Dr. Arthur Reed at NSWCCD were the technical monitors for the development of this bilge keel model. Simmy Willemann and Brian Petersen of APS assisted with the calculations shown in this paper. The opinions expressed here are those of the author.

References

  1. Belknap, W.F. and Reed, A.M. (2010), “TEMPEST – New Computationally Efficient Dynamic Stability Prediction Tool”, 11th International Ship Stability Workshop, Wageningen, June 2010.Google Scholar
  2. Bollay, W. (1936), “A New Theory for Wings of Small Aspect Ratio”, Caltech Ph.D. thesis, Pasadena, CA, 1936.Google Scholar
  3. Greeley, D.S. and Petersen, B.J (2010), “Efficient Time-Domain Computation of Bilge Keel Forces”, 28th ONR Symposium on Naval Hydrodynamics, Pasadena, CA, September 2010.Google Scholar
  4. Greeley,D.S., and Willemann, S.D.(2012),”Surface Ship Maneuvering Forces in Calm Water and Waves”, 29th ONR Symposium on Naval Hydrodynamics, Gothenburg, Sweden, 26–31 August 2012.Google Scholar
  5. Greeley, D.S. and Willemann, S.D.(2013),”Surface ship maneuvering forces in calm water and waves”, International Shipbuilding Progress 60, pp. 613–631.Google Scholar
  6. Hess, J.L. (1972), “Calculation of Potential Flow About Arbitrary Three-Dimensional Lifting Bodies”, McDonnell-Douglas Report No. MDC J5679-01, October 1972.Google Scholar
  7. Himeno, Y. (1981), “Prediction of Ship Roll Damping – State of the Art”, University of Michigan Department of Naval Architecture and Marine Engineering Report No. 239, September 1981.Google Scholar
  8. Irvine, M., Atsavapranee, P., Carneal, J. et al (2006), “Comparisons of Free Roll Decay Tests for Model DTMB 5415/2340/5512, and Investigation of Lateral Hydrodynamic Loads on Bilge Keels”, 26th ONR Symposium on Naval Hydrodynamics, Rome, Italy, September 17–22, 2006.Google Scholar
  9. Miller, R.W., Bassler, C.C., Atsavapranee, P. and Gorski, J.J., (2008), “Viscous Roll Predictions for Naval Surface Ships Appended with Bilge Keels using RANS”, 27th Symposium on Naval Hydrodynamics, Seoul, Korea, 5–10 October 2008.Google Scholar
  10. Newman, J.N. (1977), Marine Hydrodynamics, MIT Press.Google Scholar
  11. Sarpkaya, T. and O’Keefe, J.L. (1996), “Oscillating Flow About Two and Three Dimensional Bilge Keels”, Journal of Offshore Mechanics and Arctic Engineering, Vol. 118, February 1996.Google Scholar

Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Applied Physical Sciences CorporationConcordUSA

Personalised recommendations