English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We perform direct numerical simulations of shock-wave/boundary-layerinteractions (SBLI) at Mach number M = 1.7 to investigate the influence of thestate of the incoming boundary layer on the interaction properties. Wereproduce and extend the flow conditions of the experiments performed byGiepman et al., in which a spatially evolving laminar boundary layer over aflat plate is initially tripped by an array of distributed roughness elementsand impinged further downstream by an oblique shock wave. Four SBLI cases areconsidered, based on two different shock impingement locations along thestreamwise direction, corresponding to transitional and turbulent interactions,and two different shock strengths, corresponding to flow deflection angles 3degreees and 6 degrees. We find that, for all flow cases, shock inducedseparation is not observed, the boundary layer remains attached for the 3degrees case and close to incipient separation for the 6 degrees case,independent of the state of the incoming boundary layer. The findings of thiswork suggest that a transitional interaction might be the optimal solution forpractical SBLI applications, as it removes the large separation bubble typicalof laminar interactions and reduces the extent of the high-friction regionassociated with an incoming turbulent boundary layer.

Numerical investigation of supersonic shock-wave/boundary-layer interaction in transitional and turbulent regime