Journal article
Moving air-water interface on no-slip solid walls for high-speed planing hulls
Ships and offshore structures, Vol.20(5), pp.732-739
05/04/2025
DOI: 10.1080/17445302.2024.2356943
Abstract
In this study, the classical "moving-contact-line" problem associated with the no-slip boundary condition (BC) is examined, with a particular focus on large-scale, high Reynolds number turbulent ship flows. Numerical ventilation is one of the main issues reported for the computational prediction of the high-speed small planing craft using the Volume-of-Fluid (VOF) method. A numerical strategy is presented to resolve this issue with a wave blanking distance defined and used when solving the VOF equations, which is chosen based on the y + values and the velocity profiles in the boundary layer. A series of numerical tests are conducted using a slamming plate and a high-speed planing step hull. The numerical experiments show that if the blanking distance is y( +) < 30 (inside the buffer and viscous sublayers), the air-water interface on the wall will be unstable and numerical ventilation will occur. For the blanking distance y( +) > 30 (outside the buffer layer), the air-water contact line is smooth and air entrainment can be avoided. It is suggested that the blank distance needs to satisfy 30.0 < y(+) < 200.0 in consideration of accuracy and stability, and a value of y( +) similar to 100.0 can be used in practice.
Details
- Title: Subtitle
- Moving air-water interface on no-slip solid walls for high-speed planing hulls
- Creators
- Zhaoyuan Wang - University of IowaFrederick Stern - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Ships and offshore structures, Vol.20(5), pp.732-739
- DOI
- 10.1080/17445302.2024.2356943
- ISSN
- 1744-5302
- eISSN
- 1754-212X
- Publisher
- Taylor & Francis
- Number of pages
- 8
- Grant note
- N00014-20-1-2259; N00014-22-1-2413 / Office of Naval Research; United States Department of Defense; United States Navy
- Language
- English
- Electronic publication date
- 05/22/2024
- Date published
- 05/04/2025
- Academic Unit
- IIHR--Hydroscience and Engineering; Mechanical Engineering
- Record Identifier
- 9984634946602771
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