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CFD simulation of supercritical carbon dioxide in a converging-diverging nozzle.
Number: 0219
Author(s) : SAHU K. D., YADAV S. S., DASGUPTA M. S.
Summary
In the current work, we present a CFD simulation of condensation of supercritical carbon dioxide inside a converging-diverging nozzle. We use the pressure-based Eulerian-Eulerian multiphase solver along with the thermal phase change model to simulate the sudden condensation in transonic flows with phase change. The thermal phase change (TPC) model-based condensation and evaporation algorithm is implemented in Ansys Fluent. The numerical results obtained for supersonic condensing flow inside a converging-diverging nozzle are validated using pressure variations along the nozzle axis. In addition, the results obtained for the non-equilibrium condensation of carbon dioxide, like, vapor supercooling, supersaturation, temperature, and pressure variations along the nozzle axis are discussed. The results are expected to contribute towards a better understanding of flow phenomena inside a CO2 ejector with flow control.
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Pages: 9 p.
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Details
- Original title: CFD simulation of supercritical carbon dioxide in a converging-diverging nozzle.
- Record ID : 30029788
- Languages: English
- Subject: Technology
- Source: 15th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2022). Proceedings. Trondheim, Norway, June 13-15th 2022.
- Publication date: 2022/06/13
- DOI: http://dx.doi.org/10.18462/iir.gl2022.0219
- Document available for consultation in the library of the IIR headquarters only.
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Indexing
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Themes:
CO2;
Thermodynamics and changes of state - Keywords: CFD; Simulation; Modelling; Supercritical state; CO2; Change of phase; Thermodynamic property; R744; Ejector
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