本文从非平衡态热力学的原理出发探讨了化学剂的输运,多相流体的流动,不可逆热力学相变,几何相变等问题。大分子的输运物质流决定于其分子量、密度、分子尺寸和形状。在多孔介质中的流动问题可以用“标度”律表述。聚合物作用导致的絮凝现象与大分子的相分离有关,亦与其排除体积有关。 In this paper, based on the principle of non-equilibrium thermodynamics, the transport of chemical agents, the flow of multi-phase fluid, the irreversible thermodynamic phase transition and the geometric phase transition are discussed. The transport of macromolecules depends on their molecular weight, density, molecular size and shape. Flow problems in porous media can be described by the “scale” law. The flocculation caused by the action of polymer is related to the phase separation of macromolecules and also to the exclusion volume.