Reactive flow happens during carbonate rock acidification. In the present study, carbonate rock dissolution process is investigated by lattice Boltzmann method at pore scale. The two immiscible fluids flow, solute transport and heat transfer are solved by the Shan-Chen multiphase multicomponent lattice Boltzmann model, mass transport lattice Boltzmann model and multicomponent thermal lattice Boltzmann model, respectively. The solid phase is updated by Volume of Pixel method. The results show that the immiscible phase has negative effect on dissolution, while positive effect on acid penetration. The immiscible phase effect is influenced by the inlet velocity, porous media porosity, surface wettability and temperature. The increasing inlet velocity and temperature accelerate the dissolution rate, but decrease the degree of immiscible phase suppression on dissolution. The surface wettability impact on dissolution process is influenced by the immiscible phase distribution. The porosity affects the degree of immiscible phase suppression on dissolution process slightly.

反应流在碳酸盐岩酸化过程中发生。在本研究中，碳酸盐岩的溶蚀过程是通过格子玻尔兹曼方法在孔隙尺度上进行研究的。分别通过Shan-Chen多相多组分格子Boltzmann模型，传质格子Boltzmann模型和多组分热格子Boltzmann模型解决了两种不混溶流体的流动，溶质输运和热传递。固相通过“像素体积”方法更新。结果表明，不混溶相对溶解有负面影响，而对酸渗透有正面影响。不可混溶的相效应受入口速度，多孔介质孔隙率，表面润湿性和温度的影响。不断增加的入口速度和温度加快了溶出速度，但会降低溶出时不混溶相抑制的程度。表面润湿性对溶解过程的影响受不混溶相分布的影响。孔隙度对溶解过程中不混溶相抑制的程度影响很小。