By using a particle-resolved direct numerical simulation, the impact of Stefan flow on interphase heat transfer in flow past static random particle arrays is investigated. The findings demonstrate that the temperature boundary layer of particles is thickened/thinned by the outward/inward Stefan flow and therefore hinders/improves the contact between main gas flow and particles. With the impact of positive Stefan Reynolds number (Re_sf), the maximum percentage reduction of Nusselt number could be over 3 times of the maximum percentage reduction of drag coefficient at the same condition. The rise in particle Reynolds number (Re) or solid volume fraction (c) can partially offset the impact of Stefan flow. Finally, the simulation data are used to develop a correction factor for interphase heat transfer considering the impact of Stefan flow for −3 < Re_sf < 6, 0 < Re < 100, and 0 < c < 0.5. Note that the scalar in current work is chosen to be the dimensionless temperature, but the results are general and applicable to any passive scalar.

通过使用粒子解析直接数值模拟，研究了 Stefan 流对流过静态随机粒子阵列的相间传热的影响。研究结果表明，向外/向内的斯特凡流使颗粒的温度边界层变厚/变薄，从而阻碍/改善了主气流与颗粒之间的接触。在正斯蒂芬雷诺数（ Re _sf ）的影响下，努塞尔数的最大降低百分比可以是相同条件下阻力系数最大降低百分比的3倍以上。颗粒雷诺数 ( Re ) 或固体体积分数 ( c）可以部分抵消Stefan流的影响。最后，考虑到 Stefan 流对 −3 < Re _sf  < 6、0 <  Re  < 100 和 0 <  c  < 0.5的影响，模拟数据用于制定相间传热校正因子 。请注意，当前工作中的标量被选择为无量纲温度，但结果是通用的并且适用于任何无源标量。