Abstract This paper reviews the current state-of-the-art of numerical models used for thermochemical degradation and combustion of thermally thick woody biomass particles. The focus is on the theory of drying, devolatilization and char conversion with respect to their implementation in numerical simulation tools. An introduction to wood chemistry, as well as the physical characteristics of wood, is also given in order to facilitate the discussion of simplifying assumptions in current models. Current research on single, densified or non-compressed, wood particle modeling is presented, and modeling approaches are compared. The different modeling approaches are categorized by the dimensionality of the model (1D, 2D or 3D), and the one-dimensional models are separated into mesh-based and interface-based models. Additionally, the applicability of the models for wood stoves is discussed, and an overview of the existing literature on numerical simulations of small-scale wood stoves and domestic boilers is given. Furthermore, current bed modeling approaches in large-scale grate furnaces are presented and compared against single particle models.

中文翻译：

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热厚木质生物质热化学降解数值模型及其在家用木材加热设备和炉排炉中的应用

摘要 本文回顾了用于热厚木质生物质颗粒的热化学降解和燃烧的当前最先进的数值模型。重点是干燥、脱挥发分和炭转化的理论，以及它们在数值模拟工具中的实现。还介绍了木材化学以及木材的物理特性，以便于讨论简化当前模型中的假设。介绍了当前对单一、致密或非压缩木材颗粒建模的研究，并对建模方法进行了比较。不同的建模方法根据模型的维度（1D、2D 或 3D）进行分类，一维模型分为基于网格和基于界面的模型。此外，讨论了木炉模型的适用性，并概述了现有关于小型木炉和家用锅炉数值模拟的文献。此外，还介绍了大型炉排炉中的当前床建模方法，并与单粒子模型进行了比较。