A Simplified Model
نویسنده
چکیده
A simple set of equations for bubbly flow through a vertical tube is rigorously derived by means of a scale analysis from the realistic equations posed by Pauchon. It is shown that under steady flow conditions the void fraction will relax from its value at the inlet towards an asymptotic value within only a short distance of the inlet. The relationship between the inlet void fraction and the imposed pressure drop is discussed, and a simple expression is derived for the equilibrium void fraction.
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