FEATURES OF SPATIAL DISTRIBUTION OF THE SPECIFIC HEAT CAPACITY OF SUPERCRITICAL WATER DURING ITS FLOW IN VERTICAL BARE TUBES


  • N.М. Fialko Institute of Engineering Thermophysics of the National Academy of Sciences of Ukraine
  • A.V. Nosovsksyi Institute of NPP Safety Problems of NAS of Ukraine
  • S.O. Aleshko Institute of Engineering Thermophysics of the National Academy of Sciences of Ukraine
  • I.L. Pioro Faculty of Energy Systems and Nuclear Science University of Ontario Institute of Technology
  • D.P. Khmil Institute of Engineering Thermophysics of the National Academy of Sciences of Ukraine
Keywords: CFD simulation, heat capacity of supercritical water, mixed convection

Abstract

The results of computer modeling of the spatial distribution of the specific heat capacity under condition of the upstream flow of supercritical water in vertical bare tubes are given. The features of the motion along the tube length the front of the pseudo-phase transition "pseudoliquid-pseudogas" are considered. The position of this front determines the location of the extremums of the specific heat capacity of water. The regularities of changes in the radial distributions of heat capacity along the length of the tube and longitudinal distributions for different values of the radial coordinate are investigated. The data of a comparative analysis of this distribution at various values of the specific heat flux supplied to the tube wall are presented

References

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Published
2021-10-08
How to Cite
Fialko, N., Nosovsksyi, A., Aleshko, S., Pioro, I., & Khmil, D. (2021). FEATURES OF SPATIAL DISTRIBUTION OF THE SPECIFIC HEAT CAPACITY OF SUPERCRITICAL WATER DURING ITS FLOW IN VERTICAL BARE TUBES. Thermophysics and Thermal Power Engineering, 43(3), 15-23. https://doi.org/https://doi.org/10.31472/ttpe.3.2021.2
Section
Heat and Mass Transfer Processes and Equipment, Theory and Practice of Drying