A "new" concept for the heat riser?

Hello and good evening to all. First off let me say that I have searched this idea without any luck so I apologize in advance if it has already been covered. Secondly, I am new here and I do not claim to be an expert or even be half way educated in the RMH's. I have began to read Ianto's book, done a bit of reading and watching all the YouTube videos.

So anyway, my idea was to bring outside technology to the RMH. It seems that one big obstacle in many RMH designs is getting the correct direction of flow throughout, and also obtaining maximum "push" to carry exhaust gases outside. My idea is to make the inside of the heat riser "swirl" (think candy canes). My first thought was to use a culvert like the one below. Notice how the corrugations run from one end op the pipe to the other, not just straight around. My justification for this is the technology used for spacers on the intake of auto engines. It is claimed that by forcing the air from outside to travel through a spacer that has these "swirls", it will create a tornado-like effect causing an increase in the amount and force of the air witch fuels the combustion of gasoline in the cylinder.

Here is a link to a video that's shows the application principle on a car:

http://www.youtube.com/watch?v=D1SkWKspG84

My intentions are to study up throughout the winter, experiment throughout next summer, and build my final RMH inside of my barn which will someday be my home. In such a large space it is definitely going to be a unique challenge!

So let me know what you all think, and hopefully this hasn't already been commented on

Spencer Davis : Welcome to Permies .Com And a big welcome to the Rocket and wood stove Forum/Threads, with over 20,000 fellow members world wide you
should be able to come here 24/7 and talk to someone who wants to talk about what you want to talk about ! Their opinions will depending on their background
very wildly from yours, it will stretch your brain as contact with you will Stretch theirs !

Look at a few other Threads also there is a lot of information and opinions available here. Also Check out our Sister site, richsoil.comand come back often.

Some one will have to show me the loophole in Bernoulli's principle/equation for me to believe that the Thing that fits between the Throttle body and the intake
manifold will do anything at all, If it had an effect it would increase turbulence and that would increase noise and temperature, actually we really want cooler air
for maximum performance, not something that warms and thins the air after our sensors have set the throttle bodies opening for best performance !

There is also a layer of still air created at the tubes wall surface, the gee whizz thingy is too far away to breakup the surface still air so far away from the injection
point to have an effect on the condition generally called Laminar Air flow and should be called laminar no-flow, however this will definitely help you understand flow
better, when you google Laminar Flow look for articles explaining trip wires also !G'luck Big AL!

I did the google search, read and watched some videos, and understand now. I get what you are sayin now. Hard to believe that so many people use those spacers if they really don't give the desired results. I still think there ought to be a way yo speed up the velocity of the exhaust without creating too much turbulence.

Has anyone tried throating the riser maybe half way up then opening it back up towards the top of the barrel?

Spencer davis, yes opening up like the :bell on a trumpet ( Bell also has special other meanings on this Site !) Fellow member Kirk Mobert " Donkey " tried it with mixed results.

It did seem to percipitate much of the very fine fly ash created by the Rockets Freakishly hot Temps -back down into the Burn tunnel. one of the easiest areas to clean! BIG AL !