Ecoulement critique d'un liquide en vaporisation à travers une ligne de décharge comportant un orifice
(1999) Chemical Engineering Journal — Vol. 75, n° 3, p. 183-191 (1999)
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- Abstract
- Original experimental results related to the critical flashing flows through a horizontal pressure relief line involving a circular orifice are presented. On the basis of the evolution of the physical variables measured as a function of the pressure in the downstream vessel, the occurrence of the flow with the simultaneous double locations of the critical section is demonstrated and analysed experimentally. For a high enough pressure drop between the two extreme vessels, the double choking phenomenon (i.e. the simultaneous locations of a critical section at the vicinity of the orifice as well as of one other at the outlet of the line) is observed for the flow across the pressure relief Line in steady-state conditions. Depending of the value of the subcooling of the fluid at the inlet of the discharge line, the characteristics of the axial pressure profile downstream from the orifice as well as the how visualisation support the existence of several two-phase jet structures. Finally, the influence of the orifice geometry on the liquid superheat and on the critical mass flow-rate is discussed.
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Citations
Attou, A. (1999). Ecoulement critique d’un liquide en vaporisation à travers une ligne de décharge comportant un orifice. Chemical Engineering Journal, 75(3), 183-191. https://doi.org/10.1016/S1385-8947(99)00099-6 (Original work published 1999)