An engineering method of aerodynamic heating prediction for hypersonic blunt body vehicles
This paper develops a rapid engineering method for predicting aerodynamic heating of hypersonic blunt body vehicles and implements a complete computational program in C++. This engineering method is used to reduce the time required to predict the aerodynamic heating for vehicles. It utilizes the Kem...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
SAGE Publishing
2025-06-01
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| Series: | Advances in Mechanical Engineering |
| Online Access: | https://doi.org/10.1177/16878132251348391 |
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| Summary: | This paper develops a rapid engineering method for predicting aerodynamic heating of hypersonic blunt body vehicles and implements a complete computational program in C++. This engineering method is used to reduce the time required to predict the aerodynamic heating for vehicles. It utilizes the Kemp-Riddell formula to calculate stagnation point heat flux, while the downstream region heat flux is determined using the reference enthalpy method. Additionally, a simplified streamline tracing approach is proposed to calculate inviscid surface streamlines, achieving a 90% improvement in computational efficiency. A mean filtering method is also introduced to triangular surface meshes to effectively improve the smoothness of the local Reynolds number on low-density surface meshes. The engineering method is validated against experimental data from a spherically blunted cone and an Orbiter Vehicle model, showing good agreement in wall heat flux predictions for small angles of attack, with a relative error of less than 15% in the stagnation and non-expanded downstream regions. A comparison between the perfect gas model and the chemical equilibrium gas model indicates that, while their results are generally similar, the perfect gas model reduces computational time by 70% in related calculation processes, making it suitable for most conditions. |
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| ISSN: | 1687-8140 |