Author(s): W. Paul Zakrzewski; Edward P. Lozowski; Ryan Z. Blackmore
Linked Author(s):
Keywords: No Keywords
Abstract: A new integrated ship spraying and icing model, developed at the University of Alberta, has been evaluated using all available published field data sets on ship icing. The model predictions for the icing events listed in Stallabrass (1980) and in Pease and Comiskey (1986) were found not to be in good agreement with the observed icing rates. We believe that the main reason for this is a fact that the University of Alberta model has been developed for medium-sized fishing trawlers of Soviet type. These data sets, however, were created for Canadian and American vessels, the architecture and size of which are quite different from those of the Soviet ships. The method by which these data sets were created (visual estimates of the ice accretion thickness) appears also to have a significant effect on the differences between the model predictions and the icing rates on the ships. The newly created data set on icing rates experienced on Soviet fishing vessels (Lozowski and Zakrzewski, 1987) has proven to be of greater value, because the Soviets measured icing rates on their ships. The model predictions have been found to be in relatively good agreement with the icing rates measured at sea by the Soviets. These findings suggest that the optimum way for investigating ship icing is by modelling ice growth on specific types of ships and calibrating the models with the aid of reliable field data measured on those same vessels.
Year: 1988