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Plumes with chemical reaction

last modified Jan 29, 2014 02:54 PM

Members of the Fluids and Environment Group have published a paper in the Journal of Fluid Mechanics entitled “Turbulent two-phase plumes with bubble-size reduction owing to dissolution or chemical reaction”. 

They report the effects of chemical reaction or dissolution on the motion of two-phase plumes, combining the effects of bubble-size reduction and buoyancy change caused by both chemical reaction/dissolution and environmental density stratification. The work unveils some important properties of these reactive plumes, providing an analytical prediction for the occurrence of multiple or single radial spreadings of chemicals into the environment. This research deepens the understanding of the motion of two-phase plumes such as the BP oil spill plume in the Gulf of Mexico (2010), and potential releases in the ocean of carbon dioxide from storage or methane from the decomposition of hydrates at depth.

The paper’s authors are Mariana G. Domingos and Silvana S. S. Cardoso.


Image: Buoyant fluid reacting chemically with the environment. The figure shows the progression of reaction for different reactant concentrations at the source (C1 < C2 < C3) at two different times from the release (t1 < t2).