Effects of double-wedge aft angle on hypersonic laminar flows

A. S. Durna, B. Celik

Araştırma sonucu: ???type-name???Makalebilirkişi

12 Atıf (Scopus)

Özet

The aim of this study is to reveal the physics of low-enthalpy Mach 7 flows over double wedges that have varied aft angles and a fixed fore angle of 30°. Comparisons of the obtained numerical schlieren images along with the contours of Q criterion and surface heat fluxes assert that the influence of the vortical structures on the flow becomes more significant in accordance with the value of the aft angle. For the aft angle of θ2 < 50°, the three-dimensionality effects are negligible. As the aft angle exceeds 50°, the vortical structures that align in the streamwise direction start to emerge and strengthen over the surfaces of the aft wedge. The characteristic signs of Görtler vortices, distinct striations, also become apparent in the contours of heat flux, density gradient, and pressure on the surfaces of the aft wedge for those cases. The presence of vortical structures enhances heat transfer from the surfaces and together with relieving effects breaks the symmetry down in the flowfield. In general, the vortical structures and relieving effects that take place in the computations diversify the shock structure from those obtained from the two-dimensional computations for the cases with θ2 > 50°.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)1689-1703
Sayfa sayısı15
DergiAIAA Journal
Hacim58
Basın numarası4
DOI'lar
Yayın durumuYayınlandı - 2020

Bibliyografik not

Publisher Copyright:
© 2019 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.

Finansman

This study was funded by the projects Istanbul Technical University Research Fund (BAP, 39600) and Scientific andTechnological Research Council of Turkey (TUBITAK, 215M907). Computing resources used in this work were provided by the National Center of High Performance Computing of Turkey (UHEM) under grant number 5004292016. This study was funded by the projects Istanbul Technical University Research Fund (BAP, 39600) and Scientific and Technological Research Council of Turkey (TUBITAK, 215M907). Computing resources used in this work were provided by the National Center of High Performance Computing of Turkey (UHEM) under grant number 5004292016.

FinansörlerFinansör numarası
Istanbul Technical University Research Fund39600
Research Council of Turkey
TUBITAK215M907, 5004292016
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu

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