Bubble curtains are multiphase line plumes that used to reduce buoyancy-driven flows between two water zones at different densities. They similar air curtains, plane turbulent jets, installed in doorways of buildings climatically environments. In this study, we establish a formal analogy bubble and unify the frameworks for their description had previously been used. By means small-scale laborat...

This paper introduces an engineering case history of the prevention and remediation sinkholes induced by limestone quarrying in Longmen county, Huizhou city, China, through karst groundwater-air pressure monitoring, design construction a grouting curtain, effect detection. Based on hydrogeological surveys, location main development zones faults can be accurately delineated combining geophysical...

A projectile accelerated by the Hayabusa2 Small Carry-on Impactor successfully produced an artificial impact crater with a final apparent diameter of 14.5 ± 0.8 m on surface near-Earth asteroid 162173 Ryugu April 5, 2019. At time cratering, Deployable Camera 3 took clear time-lapse images ejecta curtain, assemblage ejected particles forming curtain-like structure emerging from crater. Focusing ...

We have already presented a new type of reflection wave dissipater, which has a curtain wall in front of the vertical seawall. The mechanism of the dissipater is to enhance vortex flows around the lower edge of curtain wall by the use of piston mode wave resonance in the water chamber. In order to expand the usage of the dissipater to the sea with comparatively large tidal difference, performan...

Abstract Fish guidance systems associated to water intakes represent an important feature, mandatory prevent fish from being accidentally drawn into artificial hydraulic facilities. Such are recommended for a proper integration of the intake surrounding environment and contribute reducing impact on environment. In this paper prototype system which can be applied river is presented analysed. The...