Nicolas Cerulus, Helio Quintanilha Jr, Vassilis Theofilis

DOI Number XXX-YYY-ZZZ

Conference Number HiSST-2022-301

Linear modal global instability analyses of planar and axisymmetric, laminar compression corner flows
are discussed at supersonic conditions. Steady basic flows have been computed with the OpenFOAM
package and results were compared with existing literature and independently performed high-order
direct numerical simulations. Global stability analysis reveals the leading two- and three-dimensional
eigenmodes in both planar and axisymmetric compression corners and permits comparisons of the respective amplitude functions. The existence of increasingly complex viscous structures inside the laminar separation bubble, confined underneath the shock layer, is demonstrated, and the communication
between these structures and the shock layer, recently also seen in kinetic theory simulations [40], is
established. This qualitative behaviour is found to be consistently present in both planar and axisymmetric compression corners, the main quantitative difference between the two configurations being that,
at the same nominal free-stream conditions, pressure relief makes the axisymmetric flow more stable
than its planar counterpart.

Read the full paper >

In Categories: 1.Events, HiSST 2022, Hypersonic Fundamentals and History
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.