.. DO NOT EDIT.
.. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY.
.. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE:
.. "auto_examples/props/plot_ke_frac.py"
.. LINE NUMBERS ARE GIVEN BELOW.

.. only:: html

    .. note::
        :class: sphx-glr-download-link-note

        :ref:`Go to the end <sphx_glr_download_auto_examples_props_plot_ke_frac.py>`
        to download the full example code.

.. rst-class:: sphx-glr-example-title

.. _sphx_glr_auto_examples_props_plot_ke_frac.py:


Kinetic energy fraction
=======================

Plot the kinetic energy fraction for various $\alpha_n$ as a function of $\xi_\text{wall}$

.. GENERATED FROM PYTHON SOURCE LINES 7-50



.. image-sg:: /auto_examples/props/images/sphx_glr_plot_ke_frac_001.png
   :alt: plot ke frac
   :srcset: /auto_examples/props/images/sphx_glr_plot_ke_frac_001.png
   :class: sphx-glr-single-img


.. rst-class:: sphx-glr-script-out

 .. code-block:: none

    0.2754830658241228
    Peak: i=0, ke_frac=0.06355062289332492, v_wall=0.8, alpha_n=0.2854830658241228






|

.. code-block:: Python


    import matplotlib.pyplot as plt
    import numpy as np

    from examples import utils
    from pttools.bubble import get_ke_frac
    from pttools.analysis.bubble_grid import create_bubbles
    from pttools.models.const_cs import ConstCSModel


    def main():
        # model = ConstCSModel(css2=1/3, csb2=1/3, a_s=100, a_b=50, V_s=1e-8, V_b=0)
        model = ConstCSModel(css2=1 / 3, csb2=1 / 4, a_s=5, a_b=1, V_s=1, V_b=0)
        print(model.alpha_n_min)
        # v_walls = np.linspace(0.05, 0.95, 100)
        v_walls = np.linspace(0.8, 0.9, 100)
        # alpha_ns = np.array([model.alpha_n_min, 0.2, 0.25])
        alpha_ns = np.array([model.alpha_n_min + 0.01])

        bubbles, ke_fracs = create_bubbles(
            model, v_walls=v_walls, alpha_ns=alpha_ns, func=get_ke_frac,
            # allow_bubble_failure=True,
            # bubble_kwargs={"allow_invalid": True}
        )
        i_max = np.nanargmax(ke_fracs[0])
        print(f"Peak: i={i_max}, ke_frac={ke_fracs[0, i_max]}, v_wall={v_walls[i_max]}, alpha_n={alpha_ns[0]}")

        fig: plt.Figure = plt.figure()
        ax: plt.Axes = fig.add_subplot()

        for i_alpha_n, alpha_n in enumerate(alpha_ns):
            ax.plot(v_walls, ke_fracs[i_alpha_n, :], label=rf"$\alpha_n={alpha_n:.2f}$")
        ax.set_xlabel(r"$\xi_w$")
        ax.set_ylabel(r"$K$")
        ax.grid()
        ax.legend()

        return fig


    if __name__ == "__main__":
        fig = main()
        utils.save_and_show(fig, "ke_frac.png")


.. rst-class:: sphx-glr-timing

   **Total running time of the script:** (0 minutes 1.575 seconds)

**Estimated memory usage:**  279 MB


.. _sphx_glr_download_auto_examples_props_plot_ke_frac.py:

.. only:: html

  .. container:: sphx-glr-footer sphx-glr-footer-example

    .. container:: sphx-glr-download sphx-glr-download-jupyter

      :download:`Download Jupyter notebook: plot_ke_frac.ipynb <plot_ke_frac.ipynb>`

    .. container:: sphx-glr-download sphx-glr-download-python

      :download:`Download Python source code: plot_ke_frac.py <plot_ke_frac.py>`

    .. container:: sphx-glr-download sphx-glr-download-zip

      :download:`Download zipped: plot_ke_frac.zip <plot_ke_frac.zip>`


.. only:: html

 .. rst-class:: sphx-glr-signature

    `Gallery generated by Sphinx-Gallery <https://sphinx-gallery.github.io>`_