Modelling of temperature field of flat boiling section with active single nucleation site

• Autorzy: Cieśliński J., T. , Jasiński R. , Polewski J.
• Języki publikacji: EN

Abstrakty

EN

The main assumptions of selected models of boiling from single cavity are presented. The ability of the models to predict heat transfer rate is discussed on the basis of own experimental data. Numerical model has been developed in order to check the commonly accepted assumption that the area of influence of nucleation site is equal to twice of departure diameter of vapour bubble as well as gain more information about heating section design used in present study. The present numerical model deals with 2D axi-symmetrical, non-isotropic heat conduction boundary problem. The finite element approach has been applied for solving heat conduction differential equation with boundary conditions of first, second and third kind, simultaneously. Boundary condition of first second kind represents heat flux density connected with bubbles generated from single nucleation site.

Słowa kluczowe

EN

temperature field; boiling section; FEM

PL

pole temperaturowe; wrzenie

• Wydawca: Wydawnictwo Politechniki Częstochowskiej
• Czasopismo: Turbulence : international journal
• Rocznik: 2007
• Tom: Vol. 12
• Strony: 65--73
• Opis fizyczny: Bibliogr. 9 poz., rys.

Twórcy

autor

Cieśliński J., T.

autor

Jasiński R.

autor

Polewski J.

• Gdańsk University of Technology, Narutowicza 11/12, 80-952 Gdańsk,

Bibliografia

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• [3] Mikic B. B., Rohsenow W. M.: A new correlation of pool-boiling data including the effect of heating surface characteristics. ASME J. Heat Transfer 1969, 91, 245-250.
• [4] Han C. Y., Griffith P.: The mechanism of heat transfer in nucleate pool boiling - Parts I and II. Int. J. Heat Mass Transfer 1965, 8, 887-914.
• [5] Haider S. L, Webb R. L.: A transient micro-convection model of nucleate pool boiling. Int. J. Heat Mass Transfer 1997, 40, 3675-3688.
• [6] Tien C. L.: A hydrodynamic model for nucleate pool boiling. Int. J. Heat Mass Transfer 1962, 5, 533-540.
• [7] Zuber N.: Nucleate boiling. The region of isolated bubbles and similarity with natural convection. Int. J. Heat Mass Transfer 1963, 6, 53-78.
• [8] Cieśliński J.T., Polewski J., Szymczyk J. A.: Formation of bubbles from a single nucleation site. Archives of Thermodynamics 2002, 23, 3, 59-77.
• [9] Cieśliński J. T., Polewski J., Szymczyk J. A.: Flow field around growing and rising vapour bubble by PIV measurement. J. of Visualization 2005, 8, 3, 209-216.