A Method for Measuring Hydrodynamic Force Coefficients Applied to an Articulated Concrete Mattress

Journal of Marine Science and Engineering

Liang Cheng¹  Hongwei An¹  Scott Draper¹  Xiaoyuan Hu²  Binsar Lubis³  Mehrdad Kimiaei³ 

[1] Department of Civil Environmental and Mining Engineering, The University of Western Australia, Perth, WA 6009, Australia;International Joint Laboratory on Offshore Oil & Gas Engineering, Dalian University of Technology, Dalian 116024, China;Ocean Graduate School, The University of Western Australia, Perth, WA 6009, Australia;

关键词: hydrodynamic force coefficients;    articulated concrete mattress;    steady flow;   

DOI  :  10.3390/jmse10020144

来源: DOAJ

【 摘 要 】

A physical model testing method to determine the hydrodynamic force coefficients of an object is proposed and applied to an articulated concrete mattress placed on a flat surface under steady current condition. The test setup, which comprises of a pulley system that is able to pull the concrete mattress in either direction relative to the flow (e.g., with the flow direction or against the flow direction) and one load cell to measure the force required to pull the mattress, is simple and straightforward. Writing the equations of load balance for two different pulling directions allows the force coefficients to be deduced. The novelty and advantages of the method are that it completely removes the difficulties associated with measuring forces on individual concrete blocks and isolating the mattresses from contacting the solid surface, which were common in conventional test methods for measuring hydrodynamic forces on structures founded on a solid surface. A series of flume tests have been conducted to demonstrate the validity of the proposed method. It is expected that the proposed testing method is applicable to a wide range of structures, bed surfaces and flow conditions.

【 授权许可】

Unknown