The importance of air bubble dynamics in liquid is some phenomena like chemical and biochemical processes refinery units. 2D Volume Fluid (VOF) method together with the CFD technique were employed for simulating. dynamic meshing used to simulate hydrodynamics rising water column via User Defined Function (UDF) code C++ environment was developed evaluate through column. a stagnant has been consi...

An oil spill accident will cause serious harm to marine ecology and the environment. Rapid response effective prevention methods are required minimize damage of accidents. The critical problems that emergency rescue teams face when spilled reaches sea surface, extent oil, how far they from drilling platform. However, there is no reliable model predict diffusion distance oil. Accurately predicti...

Pedro LOPES, Ph.DCandidate (Corresponding author) 3 Department of Civil Engineering & MARE Marine and Environmental Sciences Centre, 4 University of Coimbra, [email protected] 5 Jorge LEANDRO, Ph.D 6 Department of Civil Engineering & MARE Marine and Environmental Sciences Centre, 7 University of Coimbra, [email protected] 8 Rita F. CARVALHO, Ph.D 9 Department of Civil ...

Two-fluid dynamics is a challenging subject, rich both in physics and in practical applications, which range from manufacturing to lubricated transport. Mechanisms unique to a flow can be exploited to enhance functionality in applications. For example, density-matching can be used to depress the effect of gravity, or of centripetal acceleration in rotating systems, making it possible to manipul...

Stirred tanks are widely used in process industries for blending of singleand/or multiple-phase fluids, which often involves mass and/or heat transfer, chemical reactions, etc. Deep knowledge of flow field in the stirred tank is necessary to carry out these unit operations efficiently. As a result, extensive investigations of the flow in stirred tanks have been conducted over the past several d...