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Ring Shaped Turbine
Hello, Developers.
Me and my team are finishing our mechanical engeneering degree and our final essay is the creation of a hydro turbine that uses a new geometry for the blades (example in the image atached).
Our questions are:
- Is there a known way to create this type of blade geometry inside the “Blade Design” function?
- If not, I was reading a post on this forum about structural files and import of polar (https://qblade.org/qblade-forum/topic/problem-with-structure-files/). I was wondering if it is not possible to create this blade design based on the “cylindrical elements” (that i assumed is polar coordinates, am I rigth?), so i would create the design in matlab or in a 3d modeling software that woud return a file with the polar coordinates for the turbine geometry and import this to Qblade for the simulations, is this viable?
Best regards!
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Hi Nickolas,
such a blade design unfortunately can be simulated in QBlade. While the lifting line method in theory would allow such a geometry to be simulated (BEM algorithms wouldnt easily work on such a design) the blade designer in QBlade cant generate geometries that form a loop (for various reasons and assumptions).
The cylindrical elements in a substructure definition serve a different purpose and also cannot be used to generate a rotor or blade geometry.
Probably the most straightfoward way to simulate such a geometry is to use a finite volume CFD software.
Best,
David
