VectorayGen will let you use vector math principles to create any vector field you can think of.

Check out a vector field plugin by JangaFX called VectorayGen. The tool generates vector fields in real time in a matter of seconds, so it will some your time on dealing with fluid simulations or drawing splines to get randomized vector fields. VectorayGen will let you use vector math principles to create any vector field you can think of. 

Here are some UE4 videos to get you excited:

Features:

• 3D Viewport With GPU Particles and Vector Field Visualization Support
• A Plethora of Math Operators Such as Rotation, Cross Product, Translation, Randomize & More!
• Easy to Use UI and Node Graph System.
• Real-Time Vector Field Updates as You Change Vector Field Settings.
• Multiple Selection Methods to Manipulate Vector Fields.
• Intuitive Tutorials and in-software documentation.
• Presets to learn from.
• Adjustable particle spawn positions and shape.

The plugin can be used in Unreal Engine 4, Unity and other game engines that use vector fields. You can find more details on the tool and get it here.