Choked flow in water/CO2 solutions on air-independent propulsion systems

Abstract

We develop a simplified model of choked flow in pipes for CO2-water solutions as an important step in the modelling of a whole hydraulic system with the intention of eliminating the carbon dioxide generated in air-independent submarine propulsion. The model is based on an approximate fitting of the homogeneous isentropic solution upstream of a valve (or any other area restriction), for given fluid conditions at the entrance. The relative maximum choking back-pressure is computed as a function of area restriction ratio. Although the procedure is generic for gas solutions, numeric values for the non-dimensional parameters in the analysis are developed only for choking in the case of carbon dioxide solutions up to the pure-water limit.

This is a preview of subscription content, access via your institution.

Fig. 1
Fig. 2
Fig. 3
Fig. 4

References

  1. 1.

    Potter IJ, Clavelle E, Reader GT, Kady J, Carl M (2000) Exhaust gas management systems for underwater heat engines. In: Proceedings of the 2000 international symposium on underwater technology, pp 273–278. doi:10.1109/UT.2000.852556

  2. 2.

    Brennen CE (2005) Fundamentals of multiphase flow. Cambridge University Press, Cambridge

    MATH  Google Scholar 

  3. 3.

    Yoon HJ, Ishii M, Revankar ST (2006) Choking flow modeling with mechanical non-equilibrium for two-phase two-component flow. Nucl Eng Des 236:1886–1901

    Article  Google Scholar 

  4. 4.

    Valero E, Parra IE (2002) The role of thermal disequilibrium in critical two-phase flow. Int J Multiph Flow 28:21–50

    MATH  Article  Google Scholar 

  5. 5.

    García Cascales JR (2009) Conservative numerical schemes for unsteady 1D two phase flow. Doctoral Thesis, Universidad Politécnica de Cartagena, Spain

  6. 6.

    Carroll JJ, Slupsky JD, Mather AE (1991) The solubility of carbon dioxide in water at low pressure. J Phys Chem Ref Data 20(6):1201–1209

    Article  Google Scholar 

Download references

Author information

Affiliations

Authors

Corresponding author

Correspondence to Isidoro Martínez.

About this article

Cite this article

Martínez, I., Casas, P.A. Choked flow in water/CO2 solutions on air-independent propulsion systems. J Mar Sci Technol 17, 542–548 (2012). https://doi.org/10.1007/s00773-012-0177-y

Download citation

Keywords

  • Choked flow
  • Flashing
  • Cavitation
  • Carbon dioxide water solutions
  • Two phase flow