CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums

CFD notes

Register Blogs Members List Search Today's Posts Mark Forums Read

OpenFoam, SALOME, all free tools for engineers
Old

BEM python script for small-scale rotors

Posted November 6, 2015 at 13:28 by skeptik (CFD notes)
Updated January 29, 2016 at 14:43 by skeptik

The repository

https://github.com/engenegr/pyProp


Blade Element Momentum theory program to calculate small-scale low-Re rotor characteristics. The current implementation is useful for multirotors.

I.Evdokimov, "Blade element theory in the UAV multirotor Blade Optimization", CAE Conference Pacengo del Garda (Verona) - Italy, 19 - 20 October 2015 http://www.caeconference.com/speakers/evdokimov.html

Full text also accessible here:...
Member
Posted in Uncategorized
Views 1866 Comments 0 skeptik is offline Edit Tags
Old

pimpleDymFOAM and NACA 23015 rotor

Posted July 29, 2015 at 08:58 by skeptik (CFD notes)

Not bad for the first time.
PolyDualMesh. 1,9M cells.

The comparation with CFX and Russian CFD package LOGOS from

Vladimirova, N.A., CFD ANALYSIS AND CALCULATION OF AERODYNAMIC CHARACTERISTICS OF HELICOPTER ROTOR, ERF 2013.

Click image for larger version

Name:	erf2013_047-pimple.jpg
Views:	122
Size:	49.5 KB
ID:	325
Member
Posted in Uncategorized
Views 412 Comments 0 skeptik is offline Edit Tags
Old

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...
Attached Images
File Type: jpg exp-calc-kt3000-cp.jpg (40.7 KB, 696 views)
File Type: jpg exp-calc-kt3000-ct.jpg (38.0 KB, 672 views)
File Type: jpg exp-calc-kt3000-etha.jpg (36.9 KB, 690 views)
Member
Posted in Uncategorized
Views 507 Comments 0 skeptik is offline Edit Tags
Old
Rating: 2 votes, 4.00 average.

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)

Name:  blade-tips.jpg
Views: 1011
Size:  16.9 KB

Name:  t065-Q-comp.jpg
Views: 1032
Size:  49.8 KB
Member
Posted in Uncategorized
Views 443 Comments 0 skeptik is offline Edit Tags
Old

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

Name:  t0.1-U-Q-iso.jpg
Views: 957
Size:  29.6 KB
Member
Posted in Uncategorized
Views 366 Comments 0 skeptik is offline Edit Tags

All times are GMT -4. The time now is 11:00.