Instead of using the Blender fluid simulator, would you be opposed to creating the entire thing in UE4? You could use particles for water droplets, and an animated material for any water running down the sides of the object. You could even create meshes for the water droplets with morph target animations if you want some extra detail. Another solution would be to use particles for the entire water effect, having them run down the object and drip off the end.
Here’s a helpful bit of documentation for working with particles to create water: Water Particles
I think somewhere I’ve seen someone working on a Blender to UE4 fluid sim exporter, but can’t find it now… regardless, the above solution is probably your best bet, even though a direct exporter for Blender fluid simulations would be awesome.
Cheers and good luck!
-Noah