Numerical analysis of ablative behavior of silicone resin coated carbon fabric

Zheng, Zhiping; Zhi, Wei; Mao, Kezhu; Zhang, Qian; Luo, Lijuan

doi:10.1108/prt-03-2020-0019

Cited by 3 publications

(3 citation statements)

References 15 publications

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“…13 Another effective approach to simulate the 3D aerogel and to describe the heat transfer mechanism is FE method which serves widely in the thermal insulation field. [14][15][16] For instance, Bi et al 17 and Latre ´et al 18 separately developed ordered geometric models to calculate the thermal conductivity of silica aerogel by finite volume method, and the corresponding results were validated to be identical with available experimental data. In addition, regular models revealed that the predictions of the thermal conductivity were reliable and needed less computational resources than MD approaches.…”

Section: Introductionmentioning

confidence: 99%

Prediction of thermal conductivity for polyimide nanofiber aerogel based on three 3D FEM models

Shao,

Pei,

Zheng

2023

SIMULATION

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Polyimide (PI) nanofibrous aerogels (NFAs) have garnered significant attention for their exceptional mechanical and thermal properties, making them promising materials for heat insulation applications. However, there is a lack of comprehensive researches on heat transfer of PI NFAs on the modeling and prediction. Therefore, three modified unit cells with the features of PI NFA backbone were constructed for the finite element simulation. Subsequently, the comparisons of our results with experimental data from available literatures were conducted. It indicated that the cubic unit cell fitted well with the experimental values when the density being lower than [Formula: see text], while the Weaire–Phelan unit cell demonstrated good agreement when the density being higher than [Formula: see text]. A series of parametric studies were performed and indicated that the thermal conductivity is proportional to the nanofiber diameter, whereas inversely proportional to the pore size and porosity. Our research will provide the novel insights to the selection of parameters for industrial manufacturing of thermal insulation materials in aerospace, energy, protection, and so on.

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Section: Introductionmentioning

confidence: 99%

Prediction of thermal conductivity for polyimide nanofiber aerogel based on three 3D FEM models

Shao,

Pei,

Zheng

2023

SIMULATION

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“…In our recent work, the silicone resin was pyrolyzed during the ablation process, whereas the carbon fiber yarn was not. Based on the ablation mechanism of silicone resin-coated carbon fabrics, a numerical model of heat transfer through silicon resin-coated carbon fiber fabrics during ablation has been established, and which was validated by quartz lamp ablation test (Zheng et al , 2020). However, to improve the thermal protective property, this ablation model has been used to optimize the structural parameters of carbon fiber fabric by Zhang et al (2020).…”

Section: Introductionmentioning

confidence: 99%

Influences of structural parameters on the thermal properties of coated glass fiber fabrics under ablation condition investigated by numerical model

Zheng

Wang

Zhang

et al. 2020

PRT

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Purpose The purpose of this paper is to investigate the effects of structural parameters of fabric on thermal insulation properties of the coated fabric. Design/methodology/approach The authors established a numerical model for the ablation of silicone resin-coated fabric under high heat flow, and the simulation results have been validated by quartz lamp ablation experiment. The model was used to investigate the effects of structural parameters of glass fiber fabrics on the heat transfer process of the coated fabric. Findings The numerical values were in agreement with the experimental values. The thermal insulation of the coated glass fiber fabric was better than coated carbon fabric. Thermal insulation performance of the coated glass fiber fabrics was in order plain < 2/1 twill < 3/3 twill < 5/3 stain fabric. Increasing the warp density, from 100 to 180 ends/10 cm, the temperature of the back surface of the coated glass fiber fabric was reduced from 601°C to 553°C. Thermal insulation performance dramatically increased as yarn fineness went from 129 to 280 tex, and the temperature difference was 63°C. Research limitations/implications In the ablation process, to simplify the calculation, the combustion reaction of silicone resin was ignored, which can be added in the future research. Originality/value This paper provides the ablation model of the silicon-coated fabric based on the 3D geometry model to explore the influence of the structural parameters of coated glass fiber fabric on its thermal protection performance.

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“…FEM is also used in the textile industry, as well as in analyzing the heat transfer of the fabrics, which has exposed the sample's thermal properties (thermal resistance or conductivity), even in the extreme environments. [32][33][34] However, no literature exists on the use of FEM in studying the heat transfer caused by the ring/traveler friction during ring spinning.…”

mentioning

confidence: 99%

Numerical analysis of heat transfer in ring spinning

Hurren

et al. 2022

Textile Research Journal

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Improving ring spinning efficiency and yarn quality is still challenging due to the sliding friction heat generated by the ring/traveler system, which limits the traveler speed and the yarn production rate. In this study, a finite element model based on the external heat source method was first used to explore the heat transfer process of the ring/traveler system. The reliability of the model was verified empirically. Subsequently, the validated model was used to analyze the effect of the model parameters on the temperature of the ring/traveler system. The results confirm that the high-temperature region of the ring and the traveler was concentrated on their contact area. More specifically the maximum temperature of the traveler was 159.2°C, which was almost three times the maximum temperature of the ring (62.6°C). In addition, smaller frictional coefficient and yarn tension, larger contact area and heat absorption rate, and better thermal conductivity can reduce the high local temperature of the ring/traveler system. Among them, yarn tension, friction coefficient, and heat absorption rate have a significant influence on the system temperature, especially for the small traveler. The developed model is also available for different fiber types and yarn counts which can be used for a comprehensive investigation of the heat transfer in ring spinning processes. The model and results of this study offer a theoretical basis for further optimizing the ring/traveler system and improving the productivity of ring spinning.

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Numerical analysis of ablative behavior of silicone resin coated carbon fabric

Cited by 3 publications

References 15 publications

Prediction of thermal conductivity for polyimide nanofiber aerogel based on three 3D FEM models

Prediction of thermal conductivity for polyimide nanofiber aerogel based on three 3D FEM models

Influences of structural parameters on the thermal properties of coated glass fiber fabrics under ablation condition investigated by numerical model

Numerical analysis of heat transfer in ring spinning

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