Journal article
Scars and Vortices Induced by Ship Bow and Shoulder Wave Breaking
Journal of fluids engineering, Vol.129(11), pp.1445-1459
11/01/2007
DOI: 10.1115/1.2786490
Abstract
Experimental data are provided for physical understanding and computational fluid dynamics (CFD) validation for the surface combatant David–Taylor model basin Model 5415 bow and shoulder wave breaking. A photographic study was conducted using 5.72m replica and 3.05m geosim models of Model 5415 over a range of Froude numbers (Fr) to identify Fr and scale effects on wave breaking and choose the best Fr for the local flow measurements, which include near- and far-field means and rms wave elevation and mean velocity under the breaking waves. The larger model and Fr=0.35 were selected due to the large extents of quasisteady plunging bow and spilling shoulder wave breaking. A direct correlation is shown between regions of wave slope larger than 17deg and regions of large rms in wave height variation. Scars characterized by sudden changes in the mean wave height and vortices induced by wave breaking were identified. Complementary CFD solutions fill the gaps in the relatively sparse measurements enabling a more complete description of the bow and shoulder wave breaking and induced vortices and scars. The combined results have important implications regarding the modeling of the bubbly flow around surface ships, especially for bubble sources and entrainment.
Details
- Title: Subtitle
- Scars and Vortices Induced by Ship Bow and Shoulder Wave Breaking
- Creators
- A Olivieri - INSEAN, National Ship Research Institute, Via di Vallerano 139, 00128 Rome, ItalyF Pistani - INSEAN, National Ship Research Institute, Via di Vallerano 139, 00128 Rome, ItalyR Wilson - IIHR, Hydroscience & Engineering, The University of Iowa, Iowa City, Iowa 52242-1585; UT SimCenter, The University of Tennessee at Chattanooga, Chattanooga, TN 37403E. F Campana - INSEAN, National Ship Research Institute, Via di Vallerano 139, 00128 Rome, ItalyF Stern - IIHR, Hydroscience & Engineering, The University of Iowa, Iowa City, IA 52242-1585
- Resource Type
- Journal article
- Publication Details
- Journal of fluids engineering, Vol.129(11), pp.1445-1459
- Publisher
- ASME
- DOI
- 10.1115/1.2786490
- ISSN
- 0098-2202
- eISSN
- 1528-901X
- Language
- English
- Date published
- 11/01/2007
- Academic Unit
- Mechanical Engineering
- Record Identifier
- 9984064116302771
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