ɐ vɚɹˈaɪəɾi ʌv mˈɑːdəlz ɑːɹ jˈuːzd, bˌʌt dʒˈɛnɚɹəli tˌiːkˌeɪˈiː ɪz ɐ fˌʌndəmˈɛntəl flˈoʊ pɹˈɑːpɚɾi wˌɪtʃ mˈʌst biː kˈælkjʊlˌeɪɾᵻd ɪn ˈɔːɹdɚ fɔːɹ flˈuːɪd tˈɜːbjʊləns təbi mˈɑːdəld.
A variety of models are used, but generally TKE is a fundamental flow property which must be calculated in order for fluid turbulence to be modelled.