Abstract
In all studies concerning laminar mixed convection along a vertical isothermal cylinder a linear relationship between fluid density and temperature has been used and viscosity and thermal conductivity have been considered constant. However it is known that the density-temperature relationship for water is non-linear at low temperatures and viscosity and thermal conductivity are functions of temperature. In this study the problem of water laminar mixed convection along a vertical isothermal cylinder has been investigated in the temperature range between 20°C and 0°C taking into account the temperature dependence of µ, k and ρ. The results are obtained with the numerical solution of the boundary layer equations. The variation of µ, k and ρ with temperature has a strong influence on mixed convection characteristics.
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