Vapor Condensation upon Transversal Flow around a Cylinder (Boundary Heat-Exchange Laws)

The problem of vapor condensation upon transversal flow around a horizontal cylinder is considered. The analytical solutions for the “boundary heat-exchange laws” are obtained. The solutions show the dependence of the heat transfer coefficient on the corresponding factor (gravity, interfacial friction, longitudinal pressure gradient) under the assumption that there is no effect of other factors. The boundary laws obtained for moving vapor are shown to depend on pressure in the same manner, while the temperature differential has different effects in specified asymptotics. The theoretical results obtained are used for qualitative analysis of the available experimental data.