非均匀松散结构物质内部传递物理机制研究

本申请针对生物质利用中非均匀松散结构物质内的热质传递和相关现象的内在物理本质认识展开研究，系统提出非均匀松散结构物质内部传递机理的科学研究方法。选择一些典型生物质利用中的物理对象，考虑环境因素、宏观和细观尺度下表面机械以及物理化学等性质所呈现的结构效应、非均匀性、内外控制条件的相互影响等，通过可视化实验和内部观测，认识相关因素引起的宏细传递新现象和物理过程，以及现象形成的内在原因和科学表述，并从本质上揭示引起物质内部传递现象的相关驱动因素，重点阐述传递现象的过程规律和物理机制以及各驱动因素间的相互作用，探悉驱动势差演化与宏细传递现象的内在耦合关系，基于非线性、非平衡数理理论和方法，完成多因素作用下的物理数学描述，以进一步揭示过程特性和规律，明确结构效应、非均匀性与整体性能的内在联系。为进一步开展非均匀松散结构物质内部传递机制的研究提供一定科学依据，并为高效利用这些再生能源奠定理论基础。

The purpose of this application project is to research the mechanism of interior transfer in heterogeneous loose structure materials which occur in biomass energy utilization , and put forward a series of scientific methods about these process. Some typical physical phenomena in biomass energy utilization such as pure biomass, municipal solid waste and sludge management are selected, taking into account the surrounding conditions , the surface mechanic properties and the structure effects and heterogeneity which due to physical and chemical characteristics of materials with the macro and microcosmic scales,respectively, and interaction between external controlled factors and internal controlled factors and so on, new transfer phenomena and thermophysical processes will be presented by visualization experiment and inner observation. The transfer mechanisms are explained and related scientifically. The driving factors which give rise to interior transfer will be illustrated, and mainly emphasis the process laws and physical mechanisms and nonlinear coupling effects among the driving potentials. The substantial coupling relationship between variation of the driving potential differences and macro-micro transfer phenomena will be deeply discussed, and set up physics and mathematics modeling which based on nonlinear and nonequilibrium mathematic and physical theory, further identify the transfer process characteristics in heterogeneous loose structure materials,clarify the internal relations with the structure effect,heterogeneity and interior transfer performance. The macro-micro transfer phenomena and their mechanisms which due to the surrounding conditions and the heterogeneous structure effects are analyzed and described theoretically, and different transfer phenomena and interactions of interior transfer in heterogeneous loose structure materials are extracted and summarized. The results are facilitated to use the renewable energy with high efficiency, and can provide some basis information on research forward the interior transfer in porous medium.