Steady-state solidification of aqueous ammonium chloride

  title={Steady-state solidification of aqueous ammonium chloride},
  author={S. S. L. Peppin and Herbert E. Huppert and M. Grae Worster},
  journal={Journal of Fluid Mechanics},
  pages={465 - 476}
We report on a series of experiments in which a Hele-Shaw cell containing aqueous solutions of NH4Cl was translated at prescribed rates through a steady temperature gradient. The salt formed the primary solid phase of a mushy layer as the solution solidified, with the salt-depleted residual fluid driving buoyancy-driven convection and the development of chimneys in the mushy layer. Depending on the operating conditions, several morphological transitions occurred. A regime diagram is presented… 
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