On the relaxation approach for wave absorption in numerical wave tanks

OCEAN ENGINEERING

卷:187

Article

Chen, Qiang¹  Kelly, David M.²  Zang, Jun¹ 

[1] Univ Bath, Dept Architecture & Civil Engn, Res Unit Water Environm & Infrastruct Resilience, Bath BA2 7AY, Avon, England

[2] Florida Int Univ, Dept Mech & Mat Engn, Miami, FL 33199 USA

关键词: Numerical wave tank;    Wave absorption;    Relaxation method;    Particle-In-Cell method;   

DOI  :  10.1016/j.oceaneng.2019.106210

来源: Elsevier

【 摘 要 】

In CFD modelling, relaxation methods are widely used in numerical wave tanks (NWTs) for wave absorption; however, this method can be very expensive as part of the NWT must be dedicated to a relaxation zone. In this short technical note, a parametric study on the effects of the relaxation approach on absorbing different types of waves is reported. In addition, a simple modification to the relaxation method is suggested. The results appear to show that the modified relaxation approach helps to reduce the length of the relaxation zone by nearly half whilst retaining good performance in terms of wave absorption.

【 授权许可】

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