Flashing or thermodynamic breakup of a liquid jet occurs when a pressurized subcooled or saturated liquid is released to a lower pressure, resulting in violent vapor nucleation, expansion, and break up of the liquid phase. Flashing is known to produce very fine droplet atomization, often not possible by traditional mechanical means. In this work, flashing atomization is introduced in a spray bu...

This work evaluates the performance of a pressurized heterogeneous electro-Fenton (EF) process to transform antibiotic into compounds that do not promote appearance bacteria resistant in environment. Experimental system consisted non divided microfluidic electrochemical cell equipped with jet aerator, flow-through electrodes and fluidized bed goethite as iron catalyst. Results show meropenem (m...

The noninvasive investigation of flows, where media of different optical density participate, is often not possible. A measurement through dynamic water-air surfaces will result in higher measurement uncertainties or they will hinder any measurement at all. To overcome this issue we make use of adaptive optics (AO). Dependent on the measurement system, an adaptive correction of the illumination...

The outlet feeder pipe thinning in a PHWR (Pressurized Heavy Water Reactor) is caused by a high pressure steam flow inside the pipe, which is a well known degradation mechanism called a FAC (Flow Assisted Corrosion). In order to monitor the degradation, the thickness of the outlet bends close to the exit of the pressure tube should be measured and analyzed at every official overhaul. This paper...

Solutions of stress intensity factors for external and internal unpressurized and pressurized surface cracks in internally pressurized thick-walled reactor pressure vessels are determined directly by a three-dimensional displacement-hybrid finite element method. The finite element method is based on a rigorous modified variational principle of the total potential energy, with arbitrary element ...

Bridge pier scour is a complex process, which influenced by many parameters, including the presence of ice cover around piers. To better understand influence on bridge scour, an artificial cover, equipped with either smooth or rough surface, was constructed and tested experimentally. The positioned surface water submerged to specified depths in order replicate floating fixed (pressurized) condi...