Cooling Jets - 3D vs. 2D

The cooling jets that I have been working on have all been 3D runs, but the very strong cooling cases require a lot of resolution. In order to get around this, I modified a few things in Martin's jet module to make it work in 2D. I ran the weak cooling case in both 2D and 3D to compare.

2D
3D Slice

As expected, they are not exactly the same, so we just have to decide if 2D is good enough. For the very strong cooling case it may be our only option. The 2D run above did run extremely fast (less than a minute on grass).

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