为研究肿瘤磁流体热疗过程中温度梯度与浓度梯度间的耦合效应对磁微粒的弥散及肿瘤内传热的影响,本文根据非平衡热力学唯象定律建立了包含浓度场及温度场的耦合传热传质模型,以常数形式的热扩散系数表征温度梯度对传质过程的影响程度。通过有限元法求解,得到考虑双场耦合作用时肿瘤内的浓度分布和温度分布。模拟结果表明,与不考虑耦合效应的情况相比,耦合作用可以使磁微粒分布及温度分布更均匀,热扩散系数的大小对温度场随时间的变化趋势具有重要影响。 In order to study the effect of the coupling effect between temperature gradient and concentration gradient on the dispersion of magnetic particles and the heat transfer within the tumor during the magnetic field hyperthermia, a coupled convection In the heat and mass transfer model, the thermal diffusivity in the form of constant is used to characterize the influence of temperature gradient on the mass transfer process. Finding the concentration distribution and the temperature distribution in the tumor considering the coupling of two fields by the finite element method. The simulation results show that the coupling effect can make the magnetic particle distribution and temperature distribution more uniform than the case without coupling effect, and the size of the thermal diffusion coefficient has an important influence on the temperature field trend with time.