What is the best way to apply general undirected turbulence to a particle simulation? I'm using the wind node with all directions set to zero and turbulence on. My particles keep getting caught in 0 velocity pockets. Ideally I'd like to prevent them from slowing down too much, or getting caught in tiny whirlpools. Animating the turbulence offset does not seem to help.

You could try a POP Speed limit as a simple solution, it has a minimum speed option.