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Impulse theory and small-scale blades

Posted May 26, 2015 at 07:37 by skeptik (CFD notes)

Very simple, very reliable impulse theory applied to small scale rotors, quad's alike, seems to be very promising.

Espesially at low velocities.

The data about propeller were obtained in thesis Isa Diana de Sousa Baptista Morais Carvalho "Low Reynolds Propellers for Increased Quadcopters Endurance",
the experimental data scrached from http://m-selig.ae.illinois.edu/props/propDB.html

Sure, it can be more precise but i've only used classical work...
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Propeller blade tips shape and Q

Posted March 19, 2015 at 05:01 by skeptik (CFD notes)

Red - baseline (right on Q-comparation image)
Grey - advanced tip (left on Q-comparation image)

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Q-isosurface, propeller simulation

Posted March 18, 2015 at 07:31 by skeptik (CFD notes)
Updated March 25, 2015 at 02:26 by skeptik

pimpleDyMFoam solver,
polyhedral mesh

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Prism layers at airfoil using shappyHexMesh

Posted October 20, 2014 at 05:58 by skeptik (CFD notes)

Hard work with stupid snappyHexMeshDict bruteforcing and i have a result

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2 blade model NACA23015

Posted October 1, 2014 at 05:49 by skeptik (CFD notes)

Seems to be true,
My polyMesh test.

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