The practical use of supercritical carbon dioxide ( sCO 2 ) for systems operating on the Brayton cycle is currently difficult due to the occurrence of nonequilibrium and uncontrolled states near the critical point. This paper provides an analytical overview of existing mathematical models and theories to predict the occurrence of a condensing state and its effect on compressor performance in conditions of a critical point. It was found that the combination of the nonequilibrium condensation model and the nucleation model with the numerical solution technique for modeling sCO 2 flows using a turbulent model of shear stress in supercritical, metastable, and saturated regions allows one to obtain model representations of the effect of condensation on the flow efficiency. This approach allows one to more accurately calculate the local position, the rate of formation of the nucleated drop, and the boundary conditions for the onset of spontaneous condensation. The results obtained can be used to develop methods for predicting the effect of condensation on the blade load and compressor performance.


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    Titel :

    Influence of Supercritical Carbon Dioxide Condensation on Flow and Performance


    Beteiligte:

    Erschienen in:

    Erscheinungsdatum :

    01.07.2021




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch





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