helper_functions.py 文件源码

def delta_star(y, v):
    """Compute the displacement thickness using Simpson's method.

    Parameters
    ----------
    y : ndarray
        The independent variable.
    v : ndarray
        The velocity values.

    Returns
    -------
    float
        The value of the displacement thickness.

    """
    return simps((1-v/v[-1]), x=y)