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公开(公告)号：US20210108986A1
公开(公告)日：2021-04-15
申请号：US17044773
申请日：2019-08-09
Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
Inventor： Guiyong ZHANG , Yuyan JIANG , Zhi ZONG , Zhe SUN , Hao WANG , Biye YANG , Zhihong YIN , Ning LIU
Abstract: The present disclosure discloses a method of ship ice resistance model experiment based on non-refrigerated model ice, including the following steps: determining the overall length L1, breadth B and scale ratio λ of a selected ship model; determining the size A1 of an experimental area for placing broken ice in the ship ice resistance model experiment; determining the characteristic length of model ice; determining the quantitative proportion of the model ice for each size under the target coverage ratio c of the model; obtaining the number of the model ice for each size under the target coverage ratio according to the quantitative proportion of the model ice for each size under the target coverage ratio c and the total area A2 of the model ice; determining the geometrical shape and parameters of each size under the target coverage ratio c of the model ice. The present disclosure solves the problems of poor economy and poor operability in a freezing model ice experiment of an ice basin, and provides a design method for carrying out a ship ice resistance model experiment in a towing tank.
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公开(公告)号：US20210172831A1
公开(公告)日：2021-06-10
申请号：US16957804
申请日：2019-08-09
Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
Inventor： Zhi ZONG , Zhihong YIN , Guiyong ZHANG , Zhe SUN , Hao WANG , Biye YANG , Yuyan JIANG , Zhaoyang CHEN , Tao YANG
Abstract: The present disclosure discloses a method of ice distribution and data processing for ship ice resistance experiment in broken ice field, the ice floe is uniformly distributed in the broken ice field before each ship ice resistance experiment with eliminating the mutually overlapped broken ice to make it close to the experimental design working condition, and independent repeated experiments are carried out on each ship ice resistance experiment to reduce the influence of accidental factors; after finishing the experiment, the experimental data are divided into intervals and the experimental data corresponding to unreasonable subdomains are eliminated by mathematical statistics, and the uncertainty analysis is carried out; image correction is carried out for pictures of in broken ice field in the pre-experimental data, and the pictures are divided to obtain subdomain pictures to calculate the actual coverage rate of each subdomain; the ice resistance in the experimental data corresponding to each remaining subdomain is modified, so as to make the experimental data more reliable.
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