səpˈoʊz wiː hæv ɐ flˈoʊ fˈiːld jˈuː, ænd wiː ɑːɹ ˈɔːlsoʊ ɡˈɪvən ɐ dʒənˈɛɹɪk fˈiːld wɪð juːlˈɪɹiən spˌɛsɪfɪkˈeɪʃən ˈɛf ˈɛks, tˈiː.
Suppose we have a flow field u, and we are also given a generic field with Eulerian specification F(x, t).