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采用有限元方法来确定一种适于对铜镍复合板船舶的青铜螺旋桨进行阴极保护的方法。运用水池试验来证实在这种情况下进行阴极保护的必要性,并测定其必要的数据。利用大螺旋形楔形块和周期变化的边界条件对螺旋桨的几何形状进行了分析。对单个阳极的多种配置方案和多阳极保护系统进行了研究以便确定其呈最低能耗的配置。提出了一种能确定出所选中的三阳极系统中每个阳极的电流需要量的方法,以保证螺旋桨的整个表面均得到足够的保护。这些结果可推广应用于各种螺旋桨直径。
A finite element method was used to determine a method suitable for cathodic protection of bronze propellers on copper-nickel composite plates. Pool tests were used to confirm the need for cathodic protection in this situation and to determine the necessary data. The geometry of the propeller is analyzed using large spiral wedges and periodically varying boundary conditions. Various configurations of single anodes and multiple anode protection systems were studied to determine their configuration with the lowest energy consumption. A method of determining the current requirement of each anode in a selected three-anode system is presented to ensure that the entire surface of the propeller is adequately protected. These results can be extended to various propeller diameters.