MODELING A BOILING PROCESS UNDER UNCERTAINTIES
Keywords:
the process of boiling, heat transfer, dynamic simulation of boiling, fuzzy model of Takagi SugenoAbstract
The heat transfer during boiling depends on a variety of factors (boiling stage, material parameters,
geometrical parameters, state variables and flow conditions). All variations are based on empirical relationships
gained from experimental data because there is still no comprehensive theory. With increasing wall superheat
(Tw-Ts), the evaporation changes from convective boiling to nucleate boiling and then to film boiling. For each type
of boiling, separate equations for the calculation of the heat transfer coefficient do exist. This paper presents
possibilities to take account of the existing uncertainties in the dynamic simulation of boiling. For this reason a
Takagi-Sugeno-fuzzy-model was developed which includes the fuzzy transitions between the boiling stages.
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References
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