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- W2341571569 abstract "The emission of gases into the atmosphere, the evaporation of water from lakes, and the rising vapor from evaporating films may be viewed as mixed convection saturated jets. In this paper, the heat and mass transfer processes due to the diffusion of laminar, round jets that consist of a mixture of saturated water vapor and air into a quiescent medium of different temperature are investigated numerically. The mixture of gases rises due to an interaction of momentum and buoyancy forces. Two difficulties arise when saturated free jets with condensable gases are considered: buoyant effects are nonlinear, and condensation of the gas phase around small nucleation sites may occur. The nonlinearity of the buoyant term in the equation of motion is considered for ideal gases by expressing buoyancy as an exact nonlinear function of concentration and temperature. The heat and mass source/sink effects due to the presence of condensing particles in a supersaturated medium is addressed by assuming diffusional heat and mass transfer between the particles and the supersaturated medium. The conservative form of the coupled steady state boundary layer equations are discretized using a forward marching finite difference technique. The resulting nonlinear algebraic equations are solved for the entire domainmore » using Newton`s method in unique form. Results show that the center line velocity increases with increasing buoyancy due to the addition of momentum from the ambient gas medium. It is shown that the presence of nucleation particles in a supersaturated free jet induces condensation, resulting in a significant increase of the jet temperature.« less" @default.
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- W2341571569 date "1995-12-31" @default.
- W2341571569 modified "2023-09-26" @default.
- W2341571569 title "Numerical solution of saturated laminar buoyant jets" @default.
- W2341571569 hasPublicationYear "1995" @default.
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