NUMERICAL AND EXPERIMENTAL PREDICTION OF HYDRODYNAMIC INTERACTION EFFECTS ACTING ON TUGS DURING SHIP MANOEUVRES

Authors

Nirman Jayarathne, Australian Maritime College, Specialist Institute of the Universityof Tasmania,Australia. General Sir John Kotelawala Defence University, Ratmalana, Sri Lanka.
Dev Ranmuthugala, Australian Maritime College, Specialist Institute of the Universityof Tasmania, Australia.
Zhi Leong, Australian Maritime College, Specialist Institute of the Universityof Tasmania, Australia.
Jiangang Fei, Australian Maritime College, Specialist Institute of the Universityof Tasmania, Australia
Shuhong Chai, Australian Maritime College, Specialist Institute of the Universityof Tasmania, Australia

Abstract

The role of tug boats is significant when assisting ships with limited manoeuvring capabilities. Hence, knowledge of the hydrodynamic interaction effects that act on a tug under these operations is of great practical value for the tug master in order to avoid damage, collision, or capsizing. Computational Fluid Dynamic (CFD) simulations are increasingly being adopted as a tool of analysis for determining the interaction effects in such vessel manoeuvres. However, one of the major challenges faced in CFD, is that the results can vary greatly depending on the numerical model settings. This paper investigates modelling techniques and the accuracy of CFD generated interaction forces and moments acting on a tug hull operating at different drift angles, and at lateral and longitudinal locations along a tanker hull against Experimental Fluid Dynamics (EFD) data.

Recommended Citation

Jayarathne, Nirman; Ranmuthugala, Dev; Leong, Zhi; Fei, Jiangang; and Chai, Shuhong (2019) "NUMERICAL AND EXPERIMENTAL PREDICTION OF HYDRODYNAMIC INTERACTION EFFECTS ACTING ON TUGS DURING SHIP MANOEUVRES," Journal of Marine Science and Technology: Vol. 27: Iss. 3, Article 1.
DOI: 10.6119/JMST.201906_27(3).0001
Available at: https://jmstt.ntou.edu.tw/journal/vol27/iss3/1