Hydroacoustic detection of natural gas release from the seafloor has been conducted in the past by using singlebeam echosounders. In contrast, modern multibeam swath mapping systems allow much wider coverage, higher resolution, and offer 3-D spatial correlation. Up to the present, the extremely high data rate hampers water column backscatter investigations and more sophisticated visualization a...

In this contribution further development of our in-house FEM based parallel 3D simulation tool FeatFlow will be presented. In particular, we give an insight into the recent developments of the Level Set based multiphase module, which has been extended with high order (Q2) discretization to increase the robustness and accuracy of the arising prediction tool for the simulation of monodisperse dro...

The two-phase flow dynamics involving mass transfer and coalescence is investigated. model specifically developed to describe the of bubble population dispersed in glass forming liquids. amounts gas dissolved liquid are determined using chemical equilibrium oxidation–reduction reactions. gravitational rising used write kernel for which a collision efficiency also introduced. Based on Direct Qua...

The influence of viscosity and surface tension on oxygen transfer was investigated using planar laser-induced fluorescence with inhibition (PLIF-I). the were modified Triton X-100 polyacrylamide, respectively. Changes in hydrodynamic parameters millimetric bubbles identified, calculated. results revealed a decrease mass transferred presence contaminant. For viscosity, allowed for by current cor...