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Melting of ice in pure and saline water inside a square cavity

1992; Elsevier BV; Volume: 31; Issue: 5 Linguagem: Inglês

10.1016/0255-2701(92)87005-2

1873-3204

Wilhelm Schütz, H. Beer,

Heat and Mass Transfer in Porous Media

Melting of ice in pure and saline water, contained in a closed cavity, at water temperatures of 4 °C, 7 °C, 8 °C and 9 °C and a water salinity of 0‰ and 2‰, respectively, was investigated numerically and experimentally. The flow was laminar and is characterized by single diffusive convection in the case of melting in pure water and by double diffusive convection in the case of melting in saline water. A two area flow structure was found in pure water and a five area flow structure in saline water, as long as density inversion conditions were maintained. For 4 °C no density inversion exists and one main vortex characterizes the flow for pure as well as for saline water. The Nusselt number at the ice block shows a strong variation due to the complex flow structure and the melt contour is shaped according to the local Nusselt number distribution.