Peisen LU, Youcheng XI, Song FU

DOI Number: 10.60853/452e-0006

Conference number: HiSST-2024-00179

The expansion corner is a typical kind of structure on swept wings of hypersonic vehicles, which has a great effect on crossflow instabilities. This work aims to investigate the actual effect of the expansion corner on linear instabilities in practical three-dimensional hypersonic flow regimes. Hypersonic swept flows over a designed wing model of real vehicles are studied. The flow is calculated at a free-stream Mach number of 6 with the adiabatic wall condition. The model consists of a blunt cone, after which comes an expansion corner along with a flat plate. The corresponding laminar flow computations with different swept angles have been carried out using in-house shock-fitting procedures in order to ensure the quality of the base flow. Linear stability theory (LST) has been incorporated in investigating the effects of expansion corner on stationary crossflow instabilities. The most unstable mode which dominates the instability behaviour is calculated at interested streamwise locations. Both growth rates curves and neutral curves are calculated to illuminate the instabilities in this regime.

Read the full paper here

In Categories: 1.Events, High-Speed Aerodynamics and Aerothermodynamics, HiSST 2024
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.