Explosion or smoke vdb asset. Contains density, flame and temperature fields. My renders were done in Octane, where for the explosion one I used temperature and density and for the grey and green smokes only density fields. The .vdb file's density field has 27,695,672 voxels, temperature has 30,833,040 and the flame has 2,745,240 voxels. This is actually the most impressive frame of a dynamic explosion effect that I did. You can also fill the vdb with particles and convert them to a mesh to get the polygon version of the smoke and make it an .fbx or .obj.

File Format: vdb