Dam Break CFD Simulation
Can't get enough of Caedium's free surface simulations? Then this new post is for you. This animation shows a transient CFD simulation of a dam break over an obstacle. The simulation is performed in pseudo 2D, i.e., it is one cell thick.
As in the previous tank filling animation, this simple geometry is easily constrained to be a multi-block topology to produce a hexahedra mesh.
Note that I didn't connect the faces across the baffle (shown shaded above) so that it remains as an obstacle (double-sided wall) for the flow.
The mesh resolution is easily controlled by adding accuracy constraints to the outer edges of the front faces.
Prior to running the simulation the water (alpha1 = 1) is initialized to occupy two of the volumes.
Immediately the simulation starts moving forward in time (running) the notional dam holding back the water is removed. The water is then free to descend under gravity producing the spectacular waves that crash into the obstacle.
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