Bladeless Gas Turbine/Jet Engine

[LeanMixture]

I am building a gas turbine engine that uses Tesla turbine.
All comments and constructive criticism are much appreciated.

Michael Labib

[Mad Scientist]

How have you determined the optimum spacing for your rotor discs?

How many discs do you plan on using?

Have you determined open area at the center of your discs you will need for the exhaust?

Have you decided how many input nozzles you what?

Just a few of the questions to consider before you get too far into it.

[stormie]

Interesting concept

I like your concept, how far along are you with this? one of the great things about the Tesla turbine was it's ability to operate at reduced temperatures - do you expect your unit to maintain this advantage?

We are an innovative company and we are always on the lookout for technology that we can use to help our clients - even if this means working with developers to bring their concepts to market. we always work under confidentiality agreements (NDS's) and are happy to help source financing and support for idea's that can be shown to work.

Be great to hear from you.

Welcome | Energy Descent

[LeanMixture]

I already built the core of the engine and tested it by forcing compressed air at 20 PSI and it looked promising in terms of high rotation speed and it multiplies the air output. Attached are some pictures of the core. Hopefully by the next month I can run it on propane after I install the igniters and so on there is still much to build.
My email is michaellabib AT gmail DOT com . You can drop me a line and I will send you more details. Thanks.

Michael Labib

[LeanMixture]

How have you determined the optimum spacing for your rotor discs?

How many discs do you plan on using?

Have you determined open area at the center of your discs you will need for the exhaust?

Have you decided how many input nozzles you what?

Just a few of the questions to consider before you get too far into it.

I am using 26 discs and 1.5 mm spacing at the compressor stage and 16 discs with 1 mm spacing at the turbine stage.

[Mad Scientist]

I’ve built a number of experimental turbines with the goal being to try and determine design parameters.
I found that the 1.5mm spacing gave the best performance when running a turbine on air. I suspect that when used as a compressor it would be the same. All my experimenting has been done with compressed air, I have not done any experiments running a turbine with hot gas so don’t know what the spacing should be, but I sure it will be different.

With a 16 disc rotor I hope you have a lot of hot gas as these turbines will devour bunches of it.

A few other points to consider which you may or may not be aware of.

The sides of your rotor should be as smooth as possible however if you add a sawtooth around the edge this will give greater speed.

The nozzle feeding the turbine should have a converging / diverging profile. (venturi) the inlet wants to be rounded sides, the angle of the diverging output is extremely important if you are to archive maximum velocity of your gas. This angle is dependent on the type of gas that you’re using.

Adding additional nozzles will greatly increase the turbines output, but 3 -4 nozzles appears to be the optimum number, more then that do not produce significant gain.

Determine the cross sectional area of the throat of your nozzle(s). This or about two times this area should be the area of the exhaust ports at the center of your rotors. Making extra large exhaust ports does not help performance and only weakens the rotor.

[mxh5210]

You are welcome. I have read the book and it is fascinating for its research as well as the additional information. You can order it from Amazon.com. I have bought two of them:-) and I am not sorry. One goes round the family and one has gone to my naturopath. I have also started imaging as per Mr. Bengston. It is difficult, but doable and learn able. It is most likely going to be useful even for other things.

[LeanMixture]

I’ve built a number of experimental turbines with the goal being to try and determine design parameters.
I found that the 1.5mm spacing gave the best performance when running a turbine on air. I suspect that when used as a compressor it would be the same. All my experimenting has been done with compressed air, I have not done any experiments running a turbine with hot gas so don’t know what the spacing should be, but I sure it will be different.

With a 16 disc rotor I hope you have a lot of hot gas as these turbines will devour bunches of it.

A few other points to consider which you may or may not be aware of.

The sides of your rotor should be as smooth as possible however if you add a sawtooth around the edge this will give greater speed.

The nozzle feeding the turbine should have a converging / diverging profile. (venturi) the inlet wants to be rounded sides, the angle of the diverging output is extremely important if you are to archive maximum velocity of your gas. This angle is dependent on the type of gas that you’re using.

Adding additional nozzles will greatly increase the turbines output, but 3 -4 nozzles appears to be the optimum number, more then that do not produce significant gain.

Determine the cross sectional area of the throat of your nozzle(s). This or about two times this area should be the area of the exhaust ports at the center of your rotors. Making extra large exhaust ports does not help performance and only weakens the rotor.

I am using 4 nozzles and at the compressor the port intake is 1 cm and the air gets out from a 0.5 CM and the opposit at the turbine stage.

[Mad Scientist]

Unlike some I have talked to it sounds like you my actually get this thing working.

[gene gene]

Hi Michael, I find this most interesting, and hope you will continue to post and show progress. I'm not sure how I found this thread for I spend most of my time here in the renewable energy area. I believe if you were to move this thread there, you would find many much interest in your turbine.
best luck to you, Gene

[LeanMixture]

Thank you the thread has been moved to the renewable energy at http://www.energeticforum.com/renewa...tml#post142670