Abstract
This is the second paper of preliminary hull form planning for Non-Ballast Water Ship (NOBS) and Minimal Ballast Water Ship (MIBS). In the previous paper, the author proposed some simple procedures to estimate propulsive performance for NOBS/MIBS. In this paper, the author shows usability of these procedures to investigate preliminary hull form planning for NOBS/MIBS through carrying out some trial designs for VLCC. The trial designs reveal a relationship between principal dimensions and propulsive performance of NOBS/MIBS. In addition, CFD technique is used to estimate propulsive performance of Conventional Ship and NOBS/MIBS in the full load condition. The accuracy of CFD results is confirmed by comparing CFD results with results of towing tank tests. At the stage of running CFD simulation, an initial hull form is required to generate grids. The author proposes a practical method for making an initial hull form of NOBS/MIBS. The initial hull form of NOBS/MIBS also can be used at the further design stage.
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