Pietro Innocenzi, Michela Gramola, Tom B. Fisher, Mark K. Quinn, Paul J. K. Bruce, Salvador Navarro-Martinez

DOI Number XXX-YYY-ZZZ

Conference Number HiSST-2022-395

This study explores the aerothermal behaviour of a rigid mechanically deployable aeroshell developed
at Imperial College London for high-payload atmospheric entry missions. The multiphysics CFD software
STAR-CCM+ is used to perform a Conjugate Heat Transfer analysis on the aeroshell’s faceted geometry.
Results are presented for four different geometry models tested in air at Mach 5 with angles of attack
α = 0°, 5° and 10°. The predicted surface heat transfer reveals areas of elevated heat loads at the ribs
between facets and at the aeroshell shoulder, due to local boundary layer thinning. The increase in
heat transfer at the ribs depends on the sharpness of the rib: more rounded shapes result in lower heat
fluxes. Comparison with high-speed wind tunnel tests shows good agreement with experimental data.
Stanton number and temperature profiles agree within 8% and 2% respectively. The discrepancies
between experiments and simulations are largest at the sharp ribs of the aeroshell. The sources of error
can be associated to three dimensional effects neglected in the heat flux derivations from temperature
measurements as well as experimental uncertaintes.

Read the full paper >

In Categories: 1.Events, High-Speed Aerodynamics and Aerothermodynamics, HiSST 2022
Email
Print
LinkedIn
The paper above was part of  proceedings of a CEAS event and as such the author has signed a publication agreement to have their paper published in the repository. In the case this paper is found somewhere else CEAS always links to the other source.  CEAS takes great care in making the correct content available to the reader. If any mistakes are found  in the listings please contact us directly at papers@aerospacerepository.org and we will correct the listing promptly.  CEAS cannot be held liable either for mistakes in editorial or technical aspects, nor for omissions, nor for the correctness of the content. In particular, CEAS does not guarantee completeness or correctness of information contained in external websites which can be accessed via links from CEAS’s websites. Despite accurate research on the content of such linked external websites, CEAS cannot be held liable for their content. Only the content providers of such external sites are liable for their content. Should you notice any mistake in technical or editorial aspects of the CEAS site, please do not hesitate to inform us.