Three-dimensional pore-scale study of the directional heat transfer in a high thermal conductivity carbon/carbon composite protection system

Wang, Hui; Ji, Ritian; Qu, Feng; Bai, Junqiang; Fu, Qiangang; Li, Hejun

doi:10.1016/j.ast.2021.106609

Cited by 16 publications

(4 citation statements)

References 41 publications

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“…HOPG consists of stacked parallel graphene layers, and it has a high degree of crystallinity. Carbon fiber is generally used in TPSs for hypersonic vehicles because of its lightweight, high specific strength, and excellent mechanical properties . The carbon fiber structure contains HOPG as well as turbostratic and amorphous local structural regions .…”

Section: Introductionmentioning

confidence: 99%

“…Carbon fiber is generally used in TPSs for hypersonic vehicles because of its lightweight, high specific strength, and excellent mechanical properties. 37 The carbon fiber structure contains HOPG as well as turbostratic and amorphous local structural regions. 38 A HOPG lattice is used in our KMC model to represent only the graphitic regions of carbon fibers.…”

Section: Introductionmentioning

confidence: 99%

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Oxidation of Multi-layer Graphite Using an Atomistic Multi-lattice Kinetic Monte Carlo Model

Edward,

Johnson

2023

J. Phys. Chem. C

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Oxidation of Multi-layer Graphite Using an Atomistic Multi-lattice Kinetic Monte Carlo Model

Edward,

Johnson

2023

J. Phys. Chem. C

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“…Carbon–carbon (C/C) materials, composed of a network of carbon fibers (CFs) infused with a carbon matrix, have been adopted as low-ablation materials in the aerospace industry due to their high mechanical strength and low ablation rate. – Two typical thermal protection applications for C/C material include reentry ablators and rocket throat inserts. – In the reentry scenario, C/C material acts as a heat shield preventing spacecraft from overheating and, consequently, structural failure . Similarly, for rocket nozzle applications, C/C material throat inserts withstand the erosion caused by high-temperature oxidative propellant gases alleviating thrust drop or thrust deviation. , Molecular oxygen, as a common oxidizer for rockets, is an important oxidative component in the rocket propellant gas .…”

Section: Introductionmentioning

confidence: 99%

Multiscale Investigation of Carbon Fiber Oxidation Kinetics: Bridging Atomistic Simulation and a Finite-Rate Reaction Model

Tian,

Niu,

Jiang

et al. 2023

J. Phys. Chem. C

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Carbon fibers (CFs) have wide applications in spacecraft thermal protection systems because of their high mechanical strength and low ablation rate. As a thermally resistant material, obtaining carbon fiber’s oxidation kinetics under extreme temperatures is crucial for predicting its ablation behavior. However, the CF oxidation kinetics under extreme temperatures are still unclear. Here, we propose an approach for building a macroscale applicable finite-rate CF oxidation model based on atomistic simulations. In the microscale, the carbines on the CF surface are discovered to serve as active sites that adsorb O atoms while determining the overall oxidation rate. The capital reaction paths including O2 adsorption, surface complex transformation, and CO and CO2 desorption are revealed by tracking atoms’ states. With reaction paths and reaction coefficients determined from atomistic simulations, a finite-rate model is established at temperatures ranging from 2750 to 3750 K. This model is capable of illustrating the high-temperature CO-predominant phenomenon. Also, its steady-state output is applied to predict the graphite ablation rate, which shows excellent agreement with previous flow-tube experiment results. This CF/O2 finite-rate model is applicable to high-temperature scenarios, and this research provides a new guideline for building CF/oxidative-component surface chemistry models from atomistic simulations..

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“…In order to improve the structural efficiency and reduce material cost, carbon reinforced composite laminates continue to replace traditional metals in aerospace applications like: skin panels of aircraft wings, 16,17 load-bearing spacecraft structures 18 and thermal protection systems. 19,20 However, the use of the CFRP laminates will inevitably consider the influence of the aerodynamic heating. Currently, the thermal behaviors of the CFRPs have attracted much attention.…”

Section: Introductionmentioning

confidence: 99%

Thermal buckling behavior of Bouligand inspired laminated composite plates

Yang

Xie

2022

Journal of Composite Materials

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Natural Bouligand structure is a special class of hierarchical architectures, which have proven to be effective in enhancing its mechanical properties. In this work, we demonstrate that the thermal buckling capacity of Carbon Fibre Reinforced Plastics can also be improved by mimicking bio-inspired Bouligand architectures. A finite element approach using commercial software ABAQUS is developed to predict the critical buckling temperature of the Bouligand inspired laminated plates under thermal loading. Numerical predictions show a good agreement with analytical results obtained from the literature. The effectiveness of Bouligand-type composite laminates in enhancing thermal buckling behavior is first confirmed by comparing with unidirectional, cross-ply and quasi-isotropic laminates. We then present the effects of pitch angle and ply thickness on the thermal buckling temperature of bio-inspired Bouligand-type laminates. Finally, we conclude that the improved mechanical and thermal properties can be simultaneously achieved by the Bouligand structure of laminates as the pitch angle is increased. The present study highlights the high thermal buckling behavior of biomimetic Bouligand structure, offering a possibility in developing biomimetic composites with good trade-off between mechanical properties and thermal performance.

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Three-dimensional pore-scale study of the directional heat transfer in a high thermal conductivity carbon/carbon composite protection system

Cited by 16 publications

References 41 publications

Oxidation of Multi-layer Graphite Using an Atomistic Multi-lattice Kinetic Monte Carlo Model

Oxidation of Multi-layer Graphite Using an Atomistic Multi-lattice Kinetic Monte Carlo Model

Multiscale Investigation of Carbon Fiber Oxidation Kinetics: Bridging Atomistic Simulation and a Finite-Rate Reaction Model

Thermal buckling behavior of Bouligand inspired laminated composite plates

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