Modern Modeling of Water Hammer

Polish maritime research

Kamil UrbanowiczWest Pomeranian University of Technology, PolandEmailOther articles by this author:De Gruyter OnlineGoogle Scholar¹ 

[1] West Pomeranian University of Technology, Poland

关键词: Keywords: hydraulic system;    cavitation;    water hammer;    wall shear stress;    weighting function;   

DOI  :  10.1515/pomr-2017-0091

学科分类：工程和技术（综合）

来源: Politechnika Gdanska * Wydzial Oceanotechniki i Okretownictwa

【 摘 要 】

Hydraulic equipment on board ships is common. It assists in the work of: steering gear, pitch propellers, watertight doors, cargo hatch covers, cargo and mooring winches, deck cranes, stern ramps etc. The damage caused by transient flows (which include among others water hammer) are often impossible to repair at sea. Hence, it is very important to estimate the correct pressure runs and associated side effects during their design. The presented study compares the results of research on the impact of a simplified way of modeling the hydraulic resistance and simplified effective weighting functions build of two and three-terms on the estimated results of the pressure changes. As it turns out, simple effective two-terms weighting functions are able to accurately model the analyzed transients. The implementation of the presented method will soon allow current automatic protection of hydraulic systems of the adverse effects associated with frequent elevated and reduced pressures.

【 授权许可】

Unknown