Version 1
: Received: 1 February 2024 / Approved: 1 February 2024 / Online: 1 February 2024 (11:29:27 CET)
How to cite:
Chen, L.; Liu, J.; Zhang, J.; Chen, P.; Zhou, K.; Wu, A.; Jia, L. Numerical Investigation and Efficiency Analysis of Engine-Airframe Integration High speed Vehicle based on Fragment Computation. Preprints2024, 2024020049. https://doi.org/10.20944/preprints202402.0049.v1
Chen, L.; Liu, J.; Zhang, J.; Chen, P.; Zhou, K.; Wu, A.; Jia, L. Numerical Investigation and Efficiency Analysis of Engine-Airframe Integration High speed Vehicle based on Fragment Computation. Preprints 2024, 2024020049. https://doi.org/10.20944/preprints202402.0049.v1
Chen, L.; Liu, J.; Zhang, J.; Chen, P.; Zhou, K.; Wu, A.; Jia, L. Numerical Investigation and Efficiency Analysis of Engine-Airframe Integration High speed Vehicle based on Fragment Computation. Preprints2024, 2024020049. https://doi.org/10.20944/preprints202402.0049.v1
APA Style
Chen, L., Liu, J., Zhang, J., Chen, P., Zhou, K., Wu, A., & Jia, L. (2024). Numerical Investigation and Efficiency Analysis of Engine-Airframe Integration High speed Vehicle based on Fragment Computation. Preprints. https://doi.org/10.20944/preprints202402.0049.v1
Chicago/Turabian Style
Chen, L., Anping Wu and Lijun Jia. 2024 "Numerical Investigation and Efficiency Analysis of Engine-Airframe Integration High speed Vehicle based on Fragment Computation" Preprints. https://doi.org/10.20944/preprints202402.0049.v1
Abstract
The performance analysis of the internal/external flows around a high speed vehicle in near-space is fundamental and critical to the configuration and structure design for high speed aircraft. In this paper, the two-dimensional coupled implicit Reynolds Average Navier-Stokes (RANS) solver and RNG k–ε turbulence model is employed to numerically simulate the flow field of an integrated high speed vehicle. The flow field are divided three parts to solve separately and compared with that solved by integrated simulation. The flow field are decomposed to save computer storage and simulation time. The first part is inlet/isolator, the second part is combustion chamber and the third is nozzle. In the computation process, the outlet condition of isolator is endowed to the inlet boundary of combustion chamber and the outlet boundary of combustion chamber is endowed to the inlet boundary of nozzle, then the whole flow field of integrated high speed vehicle is solved. Aerodynamic characteristic of fragment-computation and integration-computation is comparatively analyzed at different angles of attack, the results show that the maximum deviation of lift coefficient obtained by fragment-computation is less than 3% compared with that by integration, the maximum deviation of drag coefficient fragment-computation is less than 5% compared with that by integration, while pitching moment coefficient deviation less than 12%. However, for simulation time-consumption, the time used by fragment-computation reduces 45% compared with integration-computation. Meanwhile, by components force analysis, it can be concluded that the aerodynamic property of inlet/isolator can been obtained separately and hardly effected by other parts.
Keywords
Efficiency Analysis; High speed vehicle; Fragment Computation; Reaction; Pressure distribution
Subject
Engineering, Aerospace Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
