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RANS model for bow wave breaking of a KRISO Container Ship under different speeds
Citation Link: https://doi.org/10.15480/882.3363
Publikationstyp
Conference Paper
Date Issued
2019-09
Sprache
English
Author(s)
Herausgeber*innen
TORE-DOI
TORE-URI
Article Number
72
Citation
11th International Workshop on Ship and Marine Hydrodynamics (IWSH2019), Paper 72
Contribution to Conference
RANS model combined with VOF method is used to simulate the bow wave breaking of KCS model in the present work. Numerical simulations under seven Froude numbers are conducted in our inhouse CFD solver naoe-FOAM-SJTU. The results of total resistance coefficient and wave pattern at Fr=0.26 are used for CFD validation. The results of resistance coefficients and wave surface on ship hull under different Froude numbers are analysed, the overall results show that present numerical methods can deal with the complex flow around ship model. Comparisons of bow wave between model test and CFD at Fr=0.26, 0.35, 0.425 are given, the vorticities induced by bow wave breaking is also analysed. In order to figure out the mechanism of bow wave breaking, detail analysis of wave cuts is provided at Fr=0.35, both plunging and spilling wave-breaking are found as well as air-entertainment and splash. Present RANS model can accurately capture the overturning of bow wave but cannot deal with the unsteady capillary wave which is found in model test.
Subjects
Bow wave breaking
KRISO Container Ship
RANS model
DDC Class
600: Technik
620: Ingenieurwissenschaften
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