In the present study, a thermochemical dissolution model based on the lattice Boltzmann method is proposed to investigate the reactive transport process involving immiscible fluid flow, mass transport, heat transfer, and dissolution. The flow of the two immiscible fluids, solute transport in the corresponding solvent, and heat transfer are solved by the Shan-Chen mul-ticomponent lattice Boltzmann model, mass transport lattice Boltzmann model, and multicomponent thermal lattice Boltz-mann model, respectively. The volume of pixel method is adopted to update the solid structures. Simulation results show that the presence of an immiscible phase inhibits the solid dissolution, and the inhibition degree increases with increasing initial immiscible phase saturation. The higher initial immiscible phase saturation contributes to a deeper acid penetration. The acid inlet velocity influences the reactive transport and temperature distribution significantly.

中文翻译：

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不相溶阶段对反应运输过程的影响

在本研究中，提出了一种基于格子玻尔兹曼方法的热化学溶解模型，以研究涉及不混溶流体流动，传质，传热和溶解的反应性传输过程。两种不混溶的流体的流动，溶质在相应溶剂中的迁移以及传热分别通过Shan-Chen多组分格子Boltzmann模型，传质格子Boltzmann模型和多组分热格子Boltz-mann模型求解。采用像素体积法更新实体结构。模拟结果表明，不混溶相的存在抑制了固溶，并且随着初始不混溶相饱和度的增加，抑制程度增加。较高的初始不混溶相饱和度有助于更深的酸渗透。