论文简介如下：
At the pore scale level, 2-D porous medium structures of porous media with different porosities (isotropic) and the same porosities (anisotropic) were constructedusing quartet structure generation set. A random porous cavity was selected andcombined with the lattice Boltzmann model to describe the gas-liquid phase transition process. Bubble generation, growth, mutual fusion, and collision as well asrebound process in porous media framework were investigated by simulating thephase transition phenomenon in porous media. Calculation results show that inthree different heat loads, the maximum relative errors between the qualities of gasphase and liquid phase and theoretical solution of gas phase were 0.09%, 0.19%,and 0.32%, respectively, whereas the values for liquid phase were 0.11%, 0.38%,and 1.49%, respectively. Simulation results coincide with the theoretical solutionperfectly, verifying the accuracy and feasibility of the model for random porous
structures.