CALCULATION OF THE HYDRODY NAMIC COEFFICIENTS OF TWO-DIMENSIONAL SHIP SECTIONS

Document Type : Research Note

Authors

Dept. of Mechanical Engineering Sharif University of Technology

Abstract

In this paper, a calculation method of hydrody­ namic. coefficients of two-dimensional ship sections for heave and sway motions, in cases of deep wa­ ter and zero-fonvard speed, are discussed . In this method, seetions ean be in different geometrical shapes. For this purpose, a potential solution with multi pole expansion aitd two-paraineter Lewis con­ formal mapping, has been used. Using this method, a code is developed that is capable of calculating added-mass and dainping coefficients of cross - see­ tions. Also, the results of the code for circular, tri­ angular and rectangu lar sections are in good agree­ ment with experiments . Therefore, the developed code can be used for hydrodynam ic calculations of ships with any arbitrary hull form.

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