波浪-浮冰作用下冰区船舶阻力性能试验

摘要

To research ice-going ship resistance under the combined wave-ice effect, this study used the towing tank of a normal ship equipped with a wavemaker and paraffin material as non-frozen model ice .The special environment was simulated with co-existing wave-pack ice in an ice zone to design and complete the test of a ship model under the combined effects of wave and pack ice .Ship-ice interaction was aggravated under the wave-ice interaction.In addition , the amount of pack ice submerged in water from the bow and sliding to the stern along the bottom in -creased significantly , which might negatively affect the propulsive efficiency of the propeller .As a result of the cou-pling action of the wave , the pack ice , and the ship , the total ship resistance under this condition is not equal to the sum of smooth water resistance , wave resistance , and resistance of trash ice .The resistance increment due to the coupling effects of the three types of resistance also needs to be considered .Parameters such as wave height and ice concentration also influence the coupling resistance .%太原为了研究波浪-浮冰联合作用下冰区船舶阻力性能,本文依托具有造波能力的常规船模拖曳水池,采用石蜡非冻结模型冰,模拟冰缘区波浪-浮冰共存的特殊环境,设计完成了船模在波浪-浮冰联合作用下的阻力性能测量试验.研究发现:在波浪-浮冰共同作用下,浮冰与船模的相互作用加剧,从船艏没入水中并沿船底向艉部滑行的浮冰数量明显增多,可能会对螺旋桨的推进效率产生不利影响.同时,由于波浪-浮冰-船模三者的耦合作用,船模在该工况的总阻力等于静水阻力、波浪增阻和碎冰阻力的简单加和,还需要考虑三者耦合作用的阻力增量.波高以及浮冰的密集度等参数都会对耦合增阻的大小产生影响.