Blender Made Easy shows use the volume to mesh modifier in Blender to create effects.

Much of a volume rendering workflow relies on creating volumes from meshes and sometimes doing the opposite, creating a mesh from a volume. A new feature in Blender 2.9 allows you to create meshes from volumes, bringing Blender’s workflow up to other 3D DCCs. 

A new tutorial from the Blender Made Easy Channel shows how you can create a Mataflow fire simulation, using the VDB result as the specimen for the new volume to mesh modifier in Blender.