Investigation on ablation behavior of carbon composites using coupled thermo-chemical peridynamic model

IF 5 2区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Thermal Sciences Pub Date : 2025-10-01 DOI:10.1016/j.ijthermalsci.2025.110358

Dewei He, Dan Huang

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引用次数: 0

Abstract

This study aims to develop a thermo-chemical coupled model under non-local peridynamic framework to describe the ablation behaviors. The model is derived from the free energy density function that incorporates chemical energy and internal energy description and will be solved in integral form. Based on the proposed coupling model, a comprehensive ablation model for typical thermal protection materials is established, considering the processes including exothermic combustion, endothermic sublimation, and oxygen diffusion. By comparing simulation results with different coupling terms, we achieved surface temperature and ablation rate results that are closer to experimental data, validating the capability of the proposed model of describing the competition mechanism between reaction and diffusion during the ablation process. Furthermore, the ablation process of carbon composites was simplified and simulated, capturing ablation morphology similar to experimental results and exploring the influence of varying ablation rates on the morphology.

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基于热-化学耦合动力学模型的碳复合材料烧蚀行为研究

本研究旨在建立非局部环动力框架下的热化学耦合模型来描述烧蚀行为。该模型由包含化学能和内能描述的自由能密度函数推导而来，并将以积分形式求解。基于所提出的耦合模型，建立了典型热防护材料的综合烧蚀模型，考虑了放热燃烧、吸热升华和氧气扩散等过程。通过比较不同耦合项下的模拟结果，得到了更接近实验数据的表面温度和烧蚀速率结果，验证了所建模型描述烧蚀过程中反应和扩散竞争机制的能力。此外，对碳复合材料的烧蚀过程进行了简化和模拟，捕捉到了与实验结果相似的烧蚀形貌，并探讨了不同烧蚀速率对烧蚀形貌的影响。

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来源期刊

International Journal of Thermal Sciences 工程技术-工程：机械

CiteScore

8.10

自引率

11.10%

发文量

531

审稿时长

55 days

期刊介绍： The International Journal of Thermal Sciences is a journal devoted to the publication of fundamental studies on the physics of transfer processes in general, with an emphasis on thermal aspects and also applied research on various processes, energy systems and the environment. Articles are published in English and French, and are subject to peer review. The fundamental subjects considered within the scope of the journal are: * Heat and relevant mass transfer at all scales (nano, micro and macro) and in all types of material (heterogeneous, composites, biological,...) and fluid flow * Forced, natural or mixed convection in reactive or non-reactive media * Single or multi–phase fluid flow with or without phase change * Near–and far–field radiative heat transfer * Combined modes of heat transfer in complex systems (for example, plasmas, biological, geological,...) * Multiscale modelling The applied research topics include: * Heat exchangers, heat pipes, cooling processes * Transport phenomena taking place in industrial processes (chemical, food and agricultural, metallurgical, space and aeronautical, automobile industries) * Nano–and micro–technology for energy, space, biosystems and devices * Heat transport analysis in advanced systems * Impact of energy–related processes on environment, and emerging energy systems The study of thermophysical properties of materials and fluids, thermal measurement techniques, inverse methods, and the developments of experimental methods are within the scope of the International Journal of Thermal Sciences which also covers the modelling, and numerical methods applied to thermal transfer.