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Enosh, a structured grid generator (II)

Posted February 13, 2014 at 18:58 by lakeat (Daniel Wei's CFD Blog: (http://lakeat.co.nf/))

Spent four days in figuring out how to construct an OpenFOAM polyMesh manually, it is more complicated than I thought, the difficult part is how to construct a multi-block mesh. One of the annoying issues in a multi-block polymesh construction is how to handle its internal lines/surfaces, where two lines become one. And then the points indices and the face indices all have to change accordingly. There may be many approaches to address this, but I, after many days' thought, decided to use a brutal...
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Enosh, a structured grid generator (I)

Posted February 7, 2014 at 17:33 by lakeat (Daniel Wei's CFD Blog: (http://lakeat.co.nf/))
Updated February 13, 2014 at 12:49 by lakeat

Trust me, I've read more than 20 structured mesh generator codes already in the last year. Interestingly, none of them satisfy me. So I decided to make it my own. I've been working on this small mesh generator for quite a while. It worked before for a single block mesh smoothing. But starting from last month, as I was thinking about how to make it "multi-block", I decided to rewrite the whole code. Because it is quite different from C++ point of view to design classes for a single block...
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3D Printing CFD Results

Posted February 5, 2014 at 09:48 by mihaipruna

Please visit my store where I created some 3D printable models of streamlines over bodies:

Designs by Mihai Pruna
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Free Android App for Aerodynamics calculations

Posted February 2, 2014 at 09:46 by nilyash81

https://play.google.com/store/apps/d...odynamicstools

The app is handy tool for Aerodynamic Engineers and Academicians. It contains Isentropic Relations, Normal Shock Relations, Oblique-Shock (Theta-Beta-Mach) Relations, Prandtl-Meyer Expansion wave Relations, Pitot Tube- Velocity computations, Y Plus or Y+ calculations.

1. Isentropic Relations - If any one of the variable from M, Po/P, To/T, Rho/Rh or A/A* is known and used as input, the remaining...
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Calculation of Wall Shear Stress

Posted February 1, 2014 at 22:53 by Nucleophobe
Updated February 2, 2014 at 02:10 by Nucleophobe

Quote:
Originally Posted by Dave442 View Post
Hi Glen,

Sorry, I wasn't asking you to check my calculations or anything. I was just wondering, as I cant find the definition in the theory manual, if the wall shear stress vector is definitely derived in CFX from the dot product of the viscous stress tensor and the unit normal vector as follows:

Tau = T . n

T = viscous stress tensor
n = surface normal vector
Tau = wall shear stress vector

As far as my axes are concerned, I generated
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