Design of Economical and Achievable Aluminum Carbon Composite Aerogel for Efficient Thermal Protection of Aerospace
Abstract
:1. Introduction
2. Results and Discussion
2.1. The Structure and Thermochemical Property of Carbon Aerogels
2.2. The Thermal Protection Performance of Carbon Aerogel
3. Conclusions
4. Materials and Methods
4.1. Preparation of Aluminum Carbon Composite Aerogel
4.2. Characterization of Aluminum Carbon Composite Aerogel
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
Nomenclature
k | Conductivity [W·m−1·K−1] |
T | Temperature [K] |
u | Velocity [m·s−1] |
P | Pressure [Pa] |
h | Coefficient of heat transfer [W·m−2·K−1] |
Rg | Universal or ideal gas constant [J·kg−1·K−1] |
Greek | |
μ | Dynamic viscosity [N·s·m−2] |
ρ | Fluid density [kg·m−3] |
τ | Shear stress |
Subscripts | |
s | Solid |
f | Fluid |
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as | BET Surface /m2 g−1 | Adsorption Average Pore Diameter /nm | Quantity Adsorbed /(cm3 g−1 STP−1) |
---|---|---|---|
AlCA–600 | 291.9096 | 2.9517 | 150.4746 |
AlCA–800 | 356.1491 | 4.9803 | 286.6782 |
AlCA–1000 | 292.8679 | 3.0761 | 160.2679 |
CA–600 | 306.9739 | 2.6727 | 148.4311 |
CA–800 | 287.8915 | 3.3322 | 170.8282 |
CA–1000 | 300.4066 | 2.4997 | 133.4855 |
Aerogels | Thickness /mm | Diameter /mm | Weight /g | Density /g cm−3 |
---|---|---|---|---|
AlCA–600 | 0.875 | 10 | 0.0157 | 0.229 |
AlCA–800 | 1.78 | 10.14 | 0.0401 | 0.279 |
AlCA–1000 | 0.519 | 10 | 0.0119 | 0.294 |
Computational Domain | Conservation Equation |
---|---|
Mainstream | The continuity equation: The momentum equation: The SST k-ω turbulence model was used to solve the Reynolds stress term The energy equation: |
Solid wall | Fourier’s law of heat conduction: |
Thermodynamic model | Ideal gas law: Sutherland formula: |
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Lv, Y.; He, F.; Dai, W.; Ma, Y.; Liu, T.; Liu, Y.; Wang, J. Design of Economical and Achievable Aluminum Carbon Composite Aerogel for Efficient Thermal Protection of Aerospace. Gels 2022, 8, 509. https://doi.org/10.3390/gels8080509
Lv Y, He F, Dai W, Ma Y, Liu T, Liu Y, Wang J. Design of Economical and Achievable Aluminum Carbon Composite Aerogel for Efficient Thermal Protection of Aerospace. Gels. 2022; 8(8):509. https://doi.org/10.3390/gels8080509
Chicago/Turabian StyleLv, Yumei, Fei He, Wei Dai, Yulong Ma, Taolue Liu, Yifei Liu, and Jianhua Wang. 2022. "Design of Economical and Achievable Aluminum Carbon Composite Aerogel for Efficient Thermal Protection of Aerospace" Gels 8, no. 8: 509. https://doi.org/10.3390/gels8080509