Flow pattern and cleaning performance of a stationary liquid jet operating at conditions relevant for industrial tank cleaning

Similar observations were made when cleaning a surface soiled with white petroleum jelly. The evolution of the cleaned area was predicted reasonably well for experiments with dN = 2 mm, L = 80 mm, and soil layer thicknesses of 0.25-1.49 mm. For longer cleaning distances and larger dN only the initial stages of cleaning could be modelled, because jet break-up introduced complexities and momentum losses not accounted for in the mathematical models. The effects of jet break-up can partly be accommodated, in practice, by correcting the jet flow rate for these momentum losses.