Monthly Archives: August 2016

Spectral element method: a simple example

Consider the 1D advection problem of a scalar with constant velocity : , , , where . Fig.1 compares the convergence (norm 2 of the difference between the numerical and exact solution) of Discontinuous Galerkin Method and Finite Difference for … Continue reading

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Video gallery: rotating plumes

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Image gallery: rotating plumes

Figure 1. From left to right: temporally and azimuthally averaged passive scalar volume fraction field for plumes at Ro=, 40, 10 and 1. These results show how increasing the rotation rate from Ro= to 10, results in the plume axis … Continue reading

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Image gallery: hybrid plumes

Figure 1. Partially averaged velocity field for a single phase plume. Left: two isosurfaces of radial velocity at (red) and (blue). Note the entrainment associated to negative values of along the plume stem below the trapping height and the formation … Continue reading

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Numerical model for bubble plumes

Here we briefly summarize the derivation of our Eulerian-Eulerian model for multiphase (gas and water) flows used to investigate plumes generated by subsurface blowouts in stratified environments. The buoyancy defect at the source is assumed to be due to thermal … Continue reading

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