CAJ | 학술논문

为改善深V船型在低速下的横摇,以千吨级深V船型为研究对象,研究在其舯部减摇鳍前、后位置加装舭龙骨对其静水阻力和横摇运动的影响.首先,通过数值模拟计算对深V船型无舭龙骨方案、加装舭龙骨的各个方案的耐波性进行比较,掌握舭龙骨距离折角线不同安装位置和不同舭龙骨宽度对深V船型横摇运动的影响.然后,根据数值计算结果考虑工程可实施性,以大舭龙骨宽度、等舭龙骨面积及不同安装角度设计这3个舭龙骨方案完成横摇衰减试验并优选出1个舭龙骨方案.最后,对该优选方案开展静水阻力试验和不规则波中的运动响应试验.试验结果表明,千吨级深V船型加装舭龙骨后,其静水阻力增加量不大于5%,减摇效果达30%以上.
위개선심V선형재저속하적횡요,이천둔급심V선형위연구대상,연구재기중부감요기전、후위치가장비용골대기정수조력화횡요운동적영향.수선,통과수치모의계산대심V선형무비용골방안、가장비용골적각개방안적내파성진행비교,장악비용골거리절각선불동안장위치화불동비용골관도대심V선형횡요운동적영향.연후,근거수치계산결과고필공정가실시성,이대비용골관도、등비용골면적급불동안장각도설계저3개비용골방안완성횡요쇠감시험병우선출1개비용골방안.최후,대해우선방안개전정수조력시험화불규칙파중적운동향응시험.시험결과표명,천둔급심V선형가장비용골후,기정수조력증가량불대우5%,감요효과체30%이상.
Deep-vee monohull can offset the wave strength at the bottom of the hull, increasing the pitch damping and improving the pitch, surge, and vertical acceleration, reducing the slamming and deck wet-ness, all of which lead to better longitudinal sea-keeping performance. However, the roll at slow speed does not show any significant improvement. Aiming at the problem, fixing a bilge keel onto the middle part of the deep-vee monohull could improve the seakeeping performance, especially the roll of the ship in waves. In this paper, a one-thousand-ton deep-vee monohull's hydrodynamic performances with different bilge keel projects are numerically simulated, which guides the design of bilge keel projects for model tests. Then, three actual projects are designed for model test, whose results of seakeeping model tests reveal that the best project has a resistance performance increment less than 5%, and the seakeeping performance, espe-cially the roll of the ship, has a 30%improvement.