..., requires the use of closure relations to solve the transfer of mass, momentum and energy between the phases, in the respective conservation equations, so that integral flow parameters such as liquid holdup (or void fraction) and pressure gradient can be predicted. However, these closure relations carry...

... amplitude waves and liquid slugs are reported here, together with comparisons with closure relations from the literature. High pressure gas-liquid flows easily develop waves at the interface which sometimes results in the formation of slugs flow given sufficiently large liquid flow rates. A comparison...