Vortexlet formation in Schardin's problem

Ladin N. Kofoglu; Gregorio G. Spinelli; Bayram Celik

doi:10.1063/5.0126592

Vortexlet formation in Schardin's problem

Ladin N. Kofoglu, Gregorio G. Spinelli, Bayram Celik^*

^*Corresponding author for this work

German Aerospace Center

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

The present study focuses on the shock diffraction problem over a triangle wedge for Mach numbers of M = 1.3, 1.5, 1.7, and 2.0 by using a two-dimensional, high-order, in-house Euler solver. The solver is based on a family of advection upstream splitting method in combination with a central essentially non-oscillatory scheme and benefits a block-based adaptive mesh refinement algorithm to resolve the regions that contain discontinuities. High accuracies in time and space, and adaptive mesh refinement capabilities of the solver allow us to investigate vortexlet formation mechanism in detail. Our results reveal that there are two different types of vortexlet formation mechanisms. While the first type of formation is observed at all Mach numbers considered here, the second type arises when the Mach number is greater than 1.3. This difference results from their driving mechanisms, which are the upward moving accelerated shock and embedded shock in the primary vortex. In addition to their driving mechanisms, two types are also different in terms of their locations.

Original language	English
Article number	126113
Journal	Physics of Fluids
Volume	34
Issue number	12
DOIs	https://doi.org/10.1063/5.0126592
Publication status	Published - Dec 2022

Bibliographical note

Publisher Copyright:
© 2022 Author(s).

Funding

Computing resources used in this work are provided by the Turkish Aerospace High Performance Computing System in Istanbul Technical University, Faculty of Aeronautics and Astronautics and TUBITAK ULAKBIM, High Performance and Grid Computing Center (TRUBA resources). Ladin Nil Kofoglu would like to acknowledge the Istanbul Technical University Research Fund (BAP, Project No 43386).

Funders	Funder number
Istanbul Technical University Research Fund	43386

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Cite this

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Vortexlet formation in Schardin's problem

Abstract

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