Comparative Study of Wave Impact Loads on Circular Cylinder by Breaking Waves

Abstract

The present study compares the CFD analysis on breaking wave impact loads on a circular cylinder. The wave impact load due to breaking waves is critical on offshore structures, however it is difficult to obtain the magnitude of impact loadaccurately both in experiments and calculations. Recently, a model test on the impact load under breaking waves on a circular cylinder was conducted in KRISO, Korea. CFD is widely adopted thanks to noticeable increase of computing power. In the present study, various CFD research groups have participated. The feasibility of CFD analysis on impact loads by breaking waves is discussed based on numerical results of wave elevation and wave impact load with comparison of model test result. The peak value and impulse of impact loads are compared as well as the rise and decay time.