Arnica

Disclaimer : under construction

Tags :

• open_source : pypi, gitlab.com, readthedocs.
• tool : Miscellaneous recurent tools near CFD codes .
• interpolation : Radial Based Function Interpolation between points clouds using scipy Kdtree.
• Python Package : available on pypi.

Arnica - All Recurrent No-brainers In Cerfacs Applications

ARNICA stands for “All Recurrent No-brainers In Cerfacs Applications”. We keep there all the simple little things we regularly need.

For example a cartesian-to-cylindrical conversion around x-axis, with a specific convention :

def rtheta2yz(rrr, theta):
    """ return yz from rtheta ,
    theta in radians measure of angle in the yz plane,
    - range -pi/pi
    - 0 on the y+ axis (z=0, y>0)
    spanning -pi to pi

                        0pi=0deg
                      Y
                      ^
                      |
                      |
    -0.5pi=-90deg     o------>Z   0.5pi=90deg

    """
    yyy = rrr * np.cos(theta)
    zzz = rrr * np.sin(theta)
    return yyy, zzz

We also could rewrite these few lines of code. Having these bits in a single repository adds the following values :

• Unitary testing.
• linting.
• Automatic documentation.
• Can be used by others in Cerfacs.

Functionnalities

• AVBP_plot_mesh_density - View the mesh using the density of points.

• Showy - A helper for matplotlib subplots.

• nparray2xmf - Create an eXtensible Data Model and Format (XDMF or XMF) file from a mesh and Arrays.

• yk_from_phi - Compute Mass fractions from Phi ( FAR/(FAR)st ) and Mixture species.

It is available on pipy, documentation is on readtthedocs, sources are mirrored on gitlab.com

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