Melt‐solid flow with diffusion‐controlled chemical reaction
Melt‐solid flow with diffusion‐controlled chemical reaction
复制标题
扩散控制化学反应的熔体-固体流动
DOI：
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发表时间：
1992
期刊：
影响因子：
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通讯作者：
H. Iwamori
中科院分区：
文献类型：
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作者：
H. Iwamori
提出了一个涉及扩散控制化学反应的熔体-固体两相流动的简单模型。对描述质量守恒的控制方程进行了数值积分，以阐明流动的化学演化。计算表明，对于在固体中扩散系数小于约10−19 m2/s的元素，局部平衡的条件被破坏。这些元素在地幔熔融和分凝阶段的行为应根据在固体中的扩散率以及熔体和固体之间的分配来研究。
A simple model for melt-solid two-phase flow involving diffusion-controlled chemical reaction is presented. The governing equations describing mass conservation were numerically integrated to clarify chemical evolution of the flow. The calculations show that the conditions for local equilibrium are violated concerning elements with small diffusion coefficient less than about 10−19 m2/s in the solid. Behavior of these elements at melting and segregation stages in the mantle should be investigated in terms of diffusivity in solid as well as partitioning between melt and solid.