Is there a way to create an undulating stream in blender like this? I've tried combining two streams into one with a collision object, but it doesn't seem to have the desired effect. https://www.instagram.com/p/CgKJ5bpDTM_/
You would ideally use the FLIP FLUIDS add-on (which costs money), but if you want to attempt it with Blender's built in Fluid simulator, my suggestion is to have 2 flow-objects and make their initial velocities face toward each other. Also I would turn off gravity for your scene, or set it to zero so you get interesting zero-gravity simulations. Make sure to also use a high resolution for finer detail. I hope this helps!