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선박의 부가저항 평가를 위한 소프트 계류 모형시험 기법 연구A Study on Soft-Mooring Model Test Techniques for the Evaluation of Added Resistance on Ships

Other Titles
A Study on Soft-Mooring Model Test Techniques for the Evaluation of Added Resistance on Ships
Authors
Seo, Min-GukPark, In BoPark, Dong MinHwang, Seunghyun
Issue Date
10월-2023
Publisher
대한조선학회
Keywords
Added resistance(부가저항); Model test(모형시험); KVLCC2; Soft-mooring test(소프트 계류 시험); Self-propulsion (자체 추진)
Citation
대한조선학회 논문집, v.60, no.5, pp 320 - 331
Pages
12
Journal Title
대한조선학회 논문집
Volume
60
Number
5
Start Page
320
End Page
331
URI
https://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/9721
DOI
10.3744/SNAK.2023.60.5.320
ISSN
1225-1143
Abstract
In this study, a model test was conducted using the soft-mooring technique to evaluate the added resistance of the ship in waves. The study also examined the specific factors that should be considered during the soft-mooring test. The main purpose of soft-mooring is to prevent drifting caused by waves by providing horizontal restoring forces. However, it can also create undesired restoring forces in the vertical direction. Therefore, we examined the restoring force of the ship's 6-DOF motion based on the arrangement of the soft-mooring and the height of the mooring connection point. We also checked the corresponding resonance period and drift distance. The soft-mooring test was conducted twice, once with self-propulsion and once without self-propulsion, allowing us to review the advantages and disadvantages of each test technique. The main parameters measured in these model tests were 6DOF motion and added resistance on the ship. We compared these measurements obtained from two different techniques (with and without self-propulsion). Additionally, we also compared the measurements based on the types of measuring sensors used (2D load cells on FP, AP, and 1D load cells on each mooring line) as well as the height of the mooring connection point.
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