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- W238092183 abstract "This paper presents an approximate analytical solution predicting the time variation of the volumetric vapor concentration distribution along a boiling channel coming as a result of a pressure ramp impressed during a finite time. The present method can easily use the homogeneous equilibrium model; it can also accommodate the separated phase drift flux model with constant parameters. The present work deals with the motion and formation of vapor. Therefore, the analytical description comprises the vapor conservation equation and a suitable form of the first law of thermodynamics to account for the effect of heat input on vaporization rate. The vapor mass conservation equation can be conveniently put into the form of the kinetic wave propagation equation. The combination of the two yields a hydrodynamic equation with the rate of vapor formation as source term. This partial differential equation can conveniently be integrated by using the method of characteristics. For this particular case both the equation describing the shape of the characteristics and the equation describing the variation of the vapor volumetric concentration can be integrated in closed form. The region of influence of the characteristic divide the time, space plane into six regions; to each region corresponds a specific closemore » form formula giving the vapor volumetric concentration as a function of the time and space. A non-dimensional approach has been preferred.« less" @default.
- W238092183 created "2016-06-24" @default.
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- W238092183 date "1983-01-01" @default.
- W238092183 modified "2023-09-24" @default.
- W238092183 title "Approximate analytical solution predicting the effect of a pressure variation on the volumetric vapor concentration in a boiling channel" @default.
- W238092183 hasPublicationYear "1983" @default.
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