There are many conventional theories that seek to explain the development of a tornado. Without exception they cannot explain the complex internal structure and energy flows in a simple and logical manner.
Tornados show a remarkably complex coherent structure, and the existence of rope like tornados, tornadoes that kink and reform, and the nature of the ejection zone at the tornado base all require, and can be simply explained if air with or without particles can be shown toexist in a form that has both shear and tensile strength, and is strongly charged.
The important points I want you to observe from watching real tornadoes are the following:
There is a distinct difference in character between the central vortex tube and the outer turbulence vortex.
The inner tube has smooth edges and spins with little verticalflow.
The outer vortex rises rapidly from the ground at the base of the inner vortex.
Condensing vapour appears as the outer vortex rises
The outer vortex initially rises faster than it spins.
Debris is thrown violently upwards and outwards.
All the points made can be demonstrated by clips from video of real storms.
This shows avery clear difference between the core and surrounding region
Good views of the structure as it developes
This is a very small tornado that passes over a car - but watch what it does to a tree immediately after. This demonstrates the speed gradient in the core of even a tiny tornado.
Many of these are available on the Internet.
This video is particularly interesting - look out for the small vortices snaking out horizontally from the main vortex several times.
Outer turbulence vortex shows visibility due to condensation of water vapour through expansion rather than dust. You can see this condensation forming as it rises. It is not dust sucked up from the ground.
An inward tangential air inflow is lifting surface dust.
Notice that this air inflow rises before reaching the core of the vortex. It does not form part of the core.