Experimental and numerical study of slamming problem for a trimaran hull

ABSTRACT

The dynamic load from slamming is an important issue for the structure integrity of a trimaran hull. The slamming loads on a typical trimaran section, based on both experimental measurements and numerical simulations, are reported in this paper. The impact pressure at crucial positions in both space and time domain, the vertical acceleration of the specimen and the detailed motion of the flow field were monitored in the experiments. The trimaran slamming phenomenon also was simulated by using a modified MPS [Sun Z, Djidjeli K, Xing JT, Cheng F. 2015. Modified MPS method for the 2D fluid structure interaction problem with free surface. Comput Fluids. 122:47–65] method proposed by the author. A thorough comparison of various results with experiment were conducted to validate the numerical model. In the end, the flow field obtained from both high-speed camera images and numerical simulations were used to analyse the extreme values and distributions of the slamming load on the hull.

KEYWORDS:

• MPS method
• trimaran slamming
• water impact
• hydrodynamics

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

The present work is supported by Qingdao National Laboratory for Marine Science and Technology [grant number QNLM2016ORP0402]; National Natural Science Foundation of China [grant numbers 51809035 and 51579042]; China Postdoctoral Science Foundation [grant number 2018M641693]; Joint Fund of Equipment pre-Research and China Ship Heavy Industry [grant number 614B042802-28]; High-tech Ship Research Project of Ministry of Industry and Information Technology of China [grant number 2017-614] and the Fundamental Research Funds for the Central Universities [grant numbers DUT2017TB05 and DUT19RC(4)028], the authors would like to thank their support.