Physical Sciences and Mathematics Commons^™

Simple Parameterized Models For Predicting Mobility, Burial And Re-Exposure Of Underwater Munitions. Serdp Final Report Mr-2224, Carl Friedrichs, Sarah E. Rennie, Alan Brandt

Reports

A compilation of 761 observations of scour-induced burial and 406 observations of initiation of motion of UXO-like objects are presented. The main factors that increase the scour-induced burial-to-diameter ratio (B/D) under (i) currents and (ii) waves are the (i) Shields parameter (S) and (ii) Keulegan-Carpenter number. For cylinders under waves, B/D additionally increases as the current component parallel to wave orbitals decreases, as S increases, and as the angle between wave orbitals and a cylinder’s axis increases. Cylinders bury most, then spheres, and conical frustums bury least. Simple models dependent on these variables explain 85% of observed variance in B/D. …