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2 Turbulence : international journal

2 2007

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Simulation of temperature field in cylindrical boiling heating section

Cieśliński J., T., Kaczmarczyk T., Z., Krasowski K.

Turbulence : international journal

2007

Vol. 12

59-64

The present paper deals with inverse 3D heat conduction problem. Taking into account geometry and design of the heating scction temperature field of the cylindrical boiling section has been estimated. The finite element approach has been applied for solving the boundary problem.

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

Cieśliński J., T., Jasiński R., Polewski J.

Turbulence : international journal

2007

Vol. 12

65-73

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.