| Résumé | Ice class propeller performance evaluation is a relatively new topic marine hydrodynamics. Bose (1996) used a 3-D panel method to evaluate the induced hydrodynamic load fluctuation between a milled ice block and the propeller blade leading edge profile, with a fixed value of proximity. For variable proximity simulation, a time-domain panel method is required to handle multiple objects moving in multiple pats. A propeller performance evaluation code, PROPELLA, was developed and used to evaluate 6 different propellers for induced load under fixed proximity conditions (Liu et al. 2000). The formulation was further developed to predict ice-propeller contact load (Doucet et al. 1998). In all the above-mentioned studies, the gaps between the propeller leading edge and the ice-blockage are fixed. The next logical development is to determine the hydrodynamic loading fluctuation as a propeller approaches an ice-blockage, i.e., the gap is a function of time. The current study was initialized for this investigation. |
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