아지무스 추진기 캐비테이션 시험 장치 개발 및 캐비테이션 성능 연구

• Published in: 大韓造船學會 論文集 Vol. 61; no. 3; pp. 161 - 169
• Main Authors: 안종우, 설한신, 정홍석, 박영하, 김상환, 한정일, Jongwoo Ahn, Hanshin Seol, Hongseok Jeong, Youngha Park, Sanghwan Kim, Jungil Han
• Format: Journal Article
• Language: English; Korean
• Published: 대한조선학회 01.06.2024
• Subjects: 조선공학
• ISSN: 1225-1143; 2287-7355
• DOI: 10.3744/SNAK.2024.61.3.161

In order to investigate cavitation performance for the azimuth thruster in Large Cavitation Tunnel (LCT), the cavitation test apparatus was designed and manufactured. Generally the model scale is determined by the pod dynamometer with about 70mm diameter. Recently as ships with azimuth thruster have become bigger, the problem of the model ship installation was occurred. The model ship with pod dynamometer couldn't be installed in the LCT test section. The cavitation test apparatus and technique which can conduct the cavitation test without pod dynamometer were developed. The cavitation tests were conducted in torque identity method instead of thrust identity method. The target ship with azimuth thruster is 18K LNG bunkering vessel. As the full-scale ship test was conducted, the model cavitation tests were conducted at the same operating conditions. The fluctuating pressure levels of the full-scale ship were compared to those of the model tests. Another model cavitation test was conducted in the foreign institute and the cavitation observation results were compared to those of LCT. Through the comparison with the existing results, it is thought that the cavitation test for the azimuth thruster can be conducted in torque identity method.