http://www.friendship-systems.com/forum/ Wind Blade Form Optimization for Maximum Momentum It was early morning on the way to the FSYS office. Suddenly the handy began ringing and I intuitively noticed that it is very urgent thing. Yes of course it was. He was a staff of a symposium that will be held in two weeks in Korea. The main topic of the symposium was about Wind Energy and his request was my participation as a lecturer for a leading edge technique session. I was about to answer "NO" very politely since the schedule was already full of other issues. But it was he concluded the conversation before my negative reaction. "Thanks MR Park, I trust you. Bye." Ok, let's make it done. I have tools and colleagues to support me tightly ! Check list. 1. Which Form ? = Not all wind power plant but just a blade. 2. How to vary ? = Pitch and Chord (Why? Why not!) 3. CAD = FFW 4. Optimizer = FFW 5. CFD = Star CCM+ 6. Software Coupling = FFW. It seemed not bad and I pushed the project straight forward. Blade model I used the blade example model in FFW directly.
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http://www.friendship-systems.com/forum/
Wind Blade Form Optimization for Maximum
Momentum
It was early morning on the way to the FSYS office.
Suddenly the handy began ringing and I intuitively noticed that it is very urgent thing.
Yes of course it was.
He was a staff of a symposium that will be held in two weeks in Korea.
The main topic of the symposium was about Wind Energy and his request was my participation as a
lecturer for a leading edge technique session.
I was about to answer "NO" very politely since the schedule was already full of other issues. But it was he
concluded the conversation before my negative reaction.
"Thanks MR Park, I trust you. Bye."
Ok, let's make it done. I have tools and colleagues to support me tightly !
Check list.
1. Which Form ? = Not all wind power plant but just a blade.
2. How to vary ? = Pitch and Chord (Why? Why not!)
3. CAD = FFW
4. Optimizer = FFW
5. CFD = Star CCM+
6. Software Coupling = FFW.
It seemed not bad and I pushed the project straight forward.
Blade model
I used the blade example model in FFW directly.
http://www.friendship-systems.com/forum/
The blade model is parameterized.
Pitch, Thickness, Chord and the radial position are defined with continuous functions.
Camber, Camber Position and Blade length are defined with constant values.
http://www.friendship-systems.com/forum/
Pitch Variation
Pitch value is controlled by pitch function in the 3D idea.
http://www.youtube.c...bed/Au385eEK5Ow
Chord Variation
In the same fashion with pitch variation, it could be seen in the movie below.
http://www.youtube.c...bed/_TBgNrISe4Q
Analysis
This is very critical phase to decide how to perform CFD calculation.
FRIENDSHIP SYSTEMS has very cooperative partner of CD-Adapco Nuernberg Germany.
I made contact with them and asked them for Mesh and Java-Macro of the blade geometry.
The kindest CD-Adapco support team took care of it and made me feel comfortable.
All what I did to them were to give the information about :
Wind Speed 11 m/s
RPM 500
Geometry of blade in STL file format.
What they gave me back were :
JAVA Macro file that create the reasonable surface and volume meshes for the given STL file.
Sim file, i.e. Simulation file, which will run the java macro file in STARCCM+.