Application of an Experimental Method to Optimize the Wave Power of Ships

摘要

The now established XY method of wave resistance survey in conjunction with an optimization theory in the Webb Model TAnk is applied to the practical problem of finding the best size and shape of a bow bulb for use over a range of loading conditions from full load to light ballast. The full size elliptical bulb as designed appears to be the best overall compromise, but a vertically distributed (cylindrical) shape should be considered as well. CTA (Constant Temperature Anemometer) wake tests are also run and show no significant changes in propeller wake due to fitting the bulbs. Further progress is also made in the technique itself especially in automating some aspects of the calibrations.