def massic_flux_cohen(conc, part_coef, k,area):
    """
    Return the dissolution mass flux [kg/s]
    source : (Cohen et al., 1980)

    Parameters
    ----------
    conc : Component concentration in oil phase [kg/m³]
    part_coef : Partition coefficient ratio of component concentration
        (oil to water)[(g/cm³)/(g/cm³)]
    k : Water phase mass transfer coefficient (oil to water) [m/s]
    area : Area of the slick [m²]


    """
    return conc * part_coef*k*area