A Stefan flow can be generated during a phase change or reactions of a particle immersed in a fluid. This study investigates the effect of Stefan flow on the exchange of momentum (drag coefficient ($C_D$)) and heat transfer (Nusselt number (Nu)) between the particle and bulk-fluid. Fully resolved simulations were carried out for a flow near a spherical particle immersed in a uniform bulk flow. The immersed boundary method is used for implementing fluid-solid interactions and the particle is considered as a static boundary with fixed boundary conditions. In a non-isothermal flow, the changes in thermophysical properties at the boundary layer played a role in the variation of $C_D$ and Nu by a Stefan flow further. The previously developed model for the drag coefficient of a spherical particle in a uniform isothermal flow was modified for a uniform non-isothermal flow. The model is developed based on physical interpretation. A new model is developed for the Nusselt number for a spherical particle with a uniform Stefan flow combining available models in literature. The models are validated for Stefan Reynolds number $-8⩽{\text{Re}}_{sf,p}⩽25$ and particle Reynolds number of $2⩽{\text{Re}}_f⩽30$ in gas flow (i.e. Pr$\approx 0.7$).

在相变或浸没在流体中的颗粒的反应过程中，可能会产生Stefan流。本研究调查了Stefan流量对动量交换（阻力系数（$C_d$））以及颗粒与体液之间的传热（努塞尔数（Nu））。对浸没在均匀体积流中的球形颗粒附近的流进行了完全解析的模拟。浸入边界方法用于实现流固耦合，并且将粒子视为具有固定边界条件的静态边界。在非等温流中，边界层的热物理性质的变化在温度的变化中起着一定的作用。$C_d$和努由斯特凡流进一步。对均匀等温流中球形颗粒的阻力系数先前开发的模型进行了修改，以实现均匀非等温流。该模型是根据物理解释开发的。结合文献中可用的模型，针对具有均匀Stefan流的球形粒子的Nusselt数开发了一个新模型。该模型已针对Stefan Reynolds编号进行了验证$-8⩽{\text{关于}}_{sF，p}⩽25$ 和雷诺数 $\mathrm{2个}⩽{\text{关于}}_F⩽30$ 气体流量（即Pr$\approx 0.7$）。