The effect of initial concentrations on solidification of ammonium chloride water solution is numerically investi- gated in detail.The solidifying process,with the cold wall temperature lower than the eutectic tempera...The effect of initial concentrations on solidification of ammonium chloride water solution is numerically investi- gated in detail.The solidifying process,with the cold wall temperature lower than the eutectic temperature,is assumed to be one-dimensional,and controlled by heat conduction only.The simulation reveals that:(1)The solid-mush interface grows in a linear manner,while the growth rate of the mush-liquid interface decreases in a parabolic manner,with increasing initial concentrations.(2)The temperature field in the whole region has parabolic characteristics,but it shows a linear feature in the solid zone and mushy zone.(3)The concentration always has linear characteristics in the mush.(4)The solid fraction distribution is strongly affected by the ini- tial concentration.The solidification process shows quite different features,especially at small and high initial concentrations.展开更多
文摘The effect of initial concentrations on solidification of ammonium chloride water solution is numerically investi- gated in detail.The solidifying process,with the cold wall temperature lower than the eutectic temperature,is assumed to be one-dimensional,and controlled by heat conduction only.The simulation reveals that:(1)The solid-mush interface grows in a linear manner,while the growth rate of the mush-liquid interface decreases in a parabolic manner,with increasing initial concentrations.(2)The temperature field in the whole region has parabolic characteristics,but it shows a linear feature in the solid zone and mushy zone.(3)The concentration always has linear characteristics in the mush.(4)The solid fraction distribution is strongly affected by the ini- tial concentration.The solidification process shows quite different features,especially at small and high initial concentrations.
