Time Resolved Measurements of Wake Characteristics from Vertical Surface-Piercing Circular Cylinders

Abstract

Towing tank experiments were conducted at the Australian Maritime College facility in Launceston, measuring the size and shape of the wake generated by two different diameter cylinders pulled through the free surface at a range of speeds. Measurements of the bow wave run up height have been compared with previous experimental data and have been shown to be consistent with these results. For low Froude numbers, the maximum bow wave height scales with velocity as predicted by Bernoulli’s equation for inviscid flow. As velocity increases, the deviation from the inviscid flow prediction increases accordingly and can be modelled by adding a dissipation term to Bernoulli’s equation. Previous studi..