Effects of Mineral Dissolution Ratios on Chemical-Dissolution Front Instability in Fluid-Saturated Porous Media
Effects of Mineral Dissolution Ratios on Chemical-Dissolution Front Instability in Fluid-Saturated Porous Media
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DOI：
10.1007/s11242-009-9427-9
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发表时间：
2010-05
影响因子：
2.7
通讯作者：
Chong-bin Zhao;B. Hobbs;A. Ord;S. Peng
中科院分区：
文献类型：
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作者：
Chong-bin Zhao;B. Hobbs;A. Ord;S. Peng
本文的主要目的是研究，从理论和计算上，矿物溶解率的影响，在流体饱和多孔介质中的化学溶解前沿不稳定性问题的不同方面。为了更好地理解矿物溶解率对流体饱和多孔介质组成的无限空间中平面化学溶解前缘传播演化的影响，采用理论分析方法推导了平面化学溶解前缘传播速度的广义解，采用计算机模拟方法，模拟了平面化学溶解前沿在超临界Zaonums处演化为复杂形貌的详细演化过程.相关的理论结果表明，矿物的溶解比起着重要的作用，在控制平面化学溶解前沿在流体饱和多孔介质中的传播速度。矿物溶解率值的增加可导致平面化学溶解前缘的传播速度值的显著减小。另一方面，相关的计算模拟结果表明，矿物的溶解率有相当大的影响，在其传播过程中的流体饱和多孔介质中的平面化学溶解前锋的演化模式。矿物溶解率的增加可以降低平面化学溶解前沿从初始平面形状演变成有限尺寸的流体饱和多孔介质内的不同形态的可能性。
The main purpose of this article is to investigate, both theoretically and computationally, the effects of mineral dissolution ratios on the different respects of chemical-dissolution front instability problems in fluid-saturated porous media. In order to get a better understanding of how the mineral dissolution ratio affects the propagation and evolution of a planar chemical-dissolution front in an infinite space consisting of a fluid-saturated porous medium, the theoretical analysis method is used to derive the generous solution to the propagation speed of the planar chemical-dissolution front, while the computational simulation method is employed to simulate the detailed evolution process when the planar chemical-dissolution front is evolved into complicated morphologies at the supercriticalZhaonumbers. The related theoretical results reveal that the mineral dissolution ratio plays an important role in controlling the propagation speed of a planar chemical-dissolution front in the fluid-saturated porous medium. An increase in the value of the mineral dissolution ratio can result in a remarkable decrease in the value of the propagation speed of a planar chemical-dissolution front. On the other hand, the related computational simulation results demonstrate that the mineral dissolution ratio has a considerable influence on the evolution pattern of a planar chemical-dissolution front during its propagation in the fluid-saturated porous medium. An increase in the mineral dissolution ratio can reduce the likelihood for a planar chemical-dissolution front to evolve from the initial planar shape into different morphologies within the fluid-saturated porous medium of finite size.