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http://dx.doi.org/10.5916/jkosme.2009.33.6.873

Appearing Condition of Breaking Waves at Infant Stage and Numerical Simulation  

Kwag, Seung-Hyun (한라대학교 컴퓨터응용설계학과)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.33, no.6, 2009 , pp. 873-879 More about this Journal
Abstract
The steady breakers at an infant stage are investigated through the numerical simulation. The appearing condition and characteristics of the sub-breaking waves are reviewed by analysing bow waves. The instability analysis is possibly done through the relationship between the free-surface curvature and circumferential force, which is obtained from the momentum equations. Navier-Stokes equations are solved by a finite difference method where the body-fitted coordinate system, the wall function and the advanced mesh system are invoked. The numerical result shows that the gradient of M/$U_s$ is greatly influenced by the Froude number and the decrease of M/$U_s$ indicates that the flows are unstable. Additionally flows with plunging or spilling are simulated successfully, but the application of breakers to the severely broken wave still remains to be settled in the future.
Keywords
Steady breaker; Sub-breaking; Finite difference method; Free surface flow; Navier-Stokes;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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