Numerical investigation of oscillations in nonequilibrium two-phase flows with a model for homogeneous nucleation in Laval nozzles is presented. The model, implemented within an Eulerian–Eulerian reference frame, is formulated using classical nucleation theory. Results by two-dimensional and three-dimensional methods are presented and compared, showing the accuracy of the predicted frequency and the pressure amplitude by a two-dimensional method. Emphasis is placed on oscillating flows in a variety of nozzle geometries, covering a range of inlet conditions. Dependences of frequency on inlet stagnation subcooling demonstrate that the occurrence of the asymmetric mode for pure steam flow is not exclusive to a specific nozzle geometry and inlet condition, which could be deferred by increasing the expansion rate and decreasing the inlet pressure.
Numerical Investigation of Oscillating Flows with Nonequilibrium Condensation in Nozzles
Journal of Propulsion and Power ; 31 , 3 ; 837-842
2015-01-09
6 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Numerical Investigation of Oscillating Flows with Nonequilibrium Condensation in Nozzles
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