Author(s): W. R. Mcgilvary; B. Coutennarsh

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Abstract: In order to estimate the ice floe capture efficiency of a river ice cover, an underturning stability criteria is required for each characteristic floe geometry. In the current work, the measured hydrodynamic pressure distribution on the bottom of a single model ice floe is used to esti­mate the dynamic stability at three thickness to depth ratios. The energy-based analysis details the conditions required for instability, metastability, and stability. The results are shown to com­pare favorably to existing stability criteria. At all three thickness to depth ratios, the effect of block rotational inertia has the effect of reducing the Froude number by 5% to 10% over a com­pletely static stability criteria.

DOI:

Year: 1992