Comparison of Hydrodynamic Coefficients obtained through Implementation of Diverse Methods in Square Tank

• 발행기관: 한국항해항만학회
• 저자명: Seunghyun Kang Hyeon Kyu Yoon
• 간행물 정보: 『한국항해항만학회지』제38권 제1호, 11~18쪽, 전체 7쪽
• 주제분류: 공학 > 해양공학
• 파일형태: PDF
• 발행일자: 2014.02.28

영문 초록

To confirm whether the square tank at Changwon National University (CWNU) can be used for estimation of maneuverability, planar motion mechanism (PMM) test and circular motion (CM) test were performed for various conditions. PMM test can be implemented using an XY carriage and a yaw table in the square tank. However, sometimes test section is insufficient for PMM test owing to low length-breadth ratio of the tank. In addition, the speed of a towing carriage is also quite limited. Therefore, it would be useful if PMM test could be effectively performed diagonally, by establishing coupled control logic to drive three servomotors. In addition, Froude number dependency on the estimated hydrodynamic coefficients was checked. Furthermore, CM tests, which cannot be completed in a conventional linear towing tank, were performed, and its results were compared with the results of PMM test. The results of the PMM tests in the diagonal direction were consistent with the results of the test performed in the direction parallel to the sidewall. However, the results of the CM test were greater than those of the PMM test. This tendency was also observed in the results published at Ulsan University

목차

Abstract

1. Introduction

2. Test facilty

3. Model and test conditions

4. Results

5. Conclusions

References

키워드

PMM test CM test square tank hydrodynamic coefficients Froude number