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PiotrekL1
Posts: 19
Registered: ‎01-03-2013
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Vertical Axis Wind Rurbine Simulation

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03-07-2013 02:53 AM

Hello

 

I have tried simulation of the simple NACA symmetrical airfoil in 2D. That looks nice but my goal is to build VAWT type H-Darrieus on my engineering dissertation. I finished Inventor training. I can make a 3D model this is no problem but I dont know how to simularte it. I am wondiering if:

 

- there is a possibility to set friction/load of the turbine generated by the parts( like electric generator) and then put those data , set initial speed( H darrieus cannot do self-start, needs to be spinned up ) and then get for example maximum turbine RPMs when providing details of the wind( like speedd, airpressure..)

 

- I read about simulation and ( I dont know if I get it correctly) I need to set RPMs of the rotor and I will get a possible lift force generated and I need to check if this lift force will produce enough  torque at particular wind speed  and if it is sufficient to power the generator.

 

 

To be honest I dont know simulation technique of it. I persume it is quite complicated task bur it will be good to know which technique is the easiest one.

 

Cheers

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*Expert Elite*
OmkarJ
Posts: 440
Registered: ‎10-02-2012

Re: Vertical Axis Wind Rurbine Simulation

03-07-2013 06:55 AM in reply to: PiotrekL1

What exactly is the question?!

 

OJ

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Contributor
PiotrekL1
Posts: 19
Registered: ‎01-03-2013

Re: Vertical Axis Wind Rurbine Simulation

03-07-2013 08:00 AM in reply to: OmkarJ

Hi

 

Sorry maybe I wrote it to complicated. Basically I need to know how can I simulate H-Darrieus wind turbine. How to determine it's RPMs at particular windspeed.

 

Cheers

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wildej
Posts: 961
Registered: ‎08-25-2011

Re: Vertical Axis Wind Rurbine Simulation

03-07-2013 08:28 AM in reply to: PiotrekL1

Take a look at Rotating Regions (RR) - it can be done. You could assign a rotational velocity or have it free spinning (with an inertia value).

 

It will be a tough simulation though, lots of mesh on the blades and a good uniform mesh where the RR and air meet.

 

How about setting something up and sharing what you have?



Jon Wilde
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*Expert Elite*
OmkarJ
Posts: 440
Registered: ‎10-02-2012

Re: Vertical Axis Wind Rurbine Simulation

03-07-2013 08:30 AM in reply to: PiotrekL1

Have you tried this first?

 

http://wikihelp.autodesk.com/Simulation_CFD/enu/2013/Help/0407-Learning407/0408-Example_408/0604-Axi...

 

This is essentially a linear motion but you can as well get an idea what you need to do to set it as angular.

 

Here is a thread that discusses bits of rotational analysis:

 

http://forums.autodesk.com/t5/Autodesk-Simulation-CFD/How-to-improve-rotating-region-anlysys/td-p/37...

 

There may be more discussion in other threads.

 

I would try some tutorials first, including the motion one, and then search through earlier threads related to rotating analysis, before even considering any simulation. You need to know some basics of CFD and a bit of practice before you venture into even a simple analysis of steady turbulent flow. You are talking about fully transient motion analysis!

 

OJ

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Contributor
PiotrekL1
Posts: 19
Registered: ‎01-03-2013

Re: Vertical Axis Wind Rurbine Simulation

03-07-2013 09:09 AM in reply to: OmkarJ

Hi

 

Thanks. I will try to practise at the begginign with link provided. After some time when I get more knowledge I can post my 3D model and if I need some help I will ask for it. Maybe I have not realized that it might be so difficult

 

Thanks a lot

 

Cheers

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Product Support
wildej
Posts: 961
Registered: ‎08-25-2011

Re: Vertical Axis Wind Rurbine Simulation

03-07-2013 10:46 AM in reply to: PiotrekL1

Omkar is spot on, you can run these buy start simple for sure. We are here to guide you though.



Jon Wilde
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