Coupled atmosphere/ocean smoothed particle hydrodynamic mo

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Play, download and edit the free video Coupled atmosphere/ocean smoothed particle hydrodynamic model - Thwaites Glacier, West Antarctica.

Science is beautiful. This is a model I built that tries to capture the physics of wind stress on buoyant meltwater (aqua) and heavier ocean water (dark blue to black) at a floating ice margin. The atmosphere (dark red to yellow) is made to move by five "wind paddles" which exit the right side of the model and reappear on the left. The wind paddles are meant to simulate a phenomenon known as "katabatic wind" which occurs when cold, heavy air flows downward off a large ice sheet towards an area of warmer land or ocean. This geometry is taken from Thwaites Glacier, Antarctica and is vertically and temporally exaggerated, but still represents the physics pretty well. Increased water velocity close to an ice sheet causes increased melt, and the ultimate goal of this model is to try to understand that process, as well the role wind plays in mixing and meltwater transport away from the ice sheet. Lo and behold, as the model evolves, you can see wind push meltwater further to the right, a process which ends up causing increased water velocity around the toe of the floating ice sheet.

All of the code used to run this model is available on GitHub (github.com/iannesbitt/CaseThwaitesSPH/) and the software used to solve the physics (DualSPHysics) is free and open source. The model contains some 525,000 particles calculated over 3000 time steps, and took ~28 hours to solve on a NVIDIA GeForce GTX 1060 graphics card.

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