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A porous media-based transport model for hydrothermal growth

Journal of Crystal Growth
Publication Date
DOI: 10.1016/s0022-0248(98)01191-9
  • Hydrothermal Synthesis
  • Crystal Growth
  • Porous Media
  • Process Modeling
  • Computer Science
  • Earth Science
  • Geography


Abstract A hydrothermal crystal growth system usually consists of a porous bed of polycrystalline charge, predetermined volume of a solvent, suitably oriented seeds, etc. For preliminary study of flow and heat transfer, the convective system for hydrothermal growth can be considered as a composite fluid and porous layer and the flow in the nutrient bed can be modeled using the Darcy–Brinkman–Forchheimer formulation. A three-dimensional algorithm has been developed to examine the flow and heat transfer in a typical autoclave system, which is partially heated on the vertical wall and adiabatic at the top and bottom. The study presents, for the first time, a transport model for hydrothermal growth and the possible flow structure in an autoclave. The temperature and flow fields are analyzed for a few selected cases.

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