IIR document

CFD simulation of supercritical carbon dioxide in a converging-diverging nozzle.

Number: 0219

Author(s) : SAHU K. D., YADAV S. S., DASGUPTA M. S.


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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  • 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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