Okay found a good one, but unfortunately even the highest velocity and thickest screens they tested are at the lower bound of what's interesting to us. Still, it's a good starting point.
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P.S.
They said at higher reynolds numbers vortex shedding would occur, but I don't know enough about aerodynamics to know if that would even happen when using as a grill block, or what affect it would have on drag/airflow.