Author(s): D. S. Spencer; G. W. Timco
Linked Author(s):
Keywords: No Keywords
Abstract: Correct ice density has been a problem with refrigerated model ice. Improper scaling has resulted in relatively low buoyant forces leading to errors in ice resistance tests, rubble field tests and propeller ice interaction tests. A mechanical system for introducing small air bubbles into refrigerated model ice is described. The process allows ice density to be varied from its unmodified value of approximately 930 kg/m3 to a value as low as 600 kg/m3. Mechanical properties of the new model ice are presented. It is shown that the columnar structure of the ice remains unchanged and some mechanical properties appear to be enhanced by the presence of bubbles.
Year: 1990