Title

Three-Dimensional Measurements Of Supersonic Flow Using Tomographic Background Oriented Schlieren

Abstract

This study describes three-dimensional (3D) quantitative visualization of density field in a supersonic flow around a cone spike. The background oriented schlieren technique (BOS) is applied for this purpose. BOS is one of visualization techniques which is capable of non-intrusive flow measurement with relatively low cost and easy-to-setup instruments, belonging to the same family as schlieren photography. In regular schlieren and shadowgraph techniques, it is widely known that a complicated optical system is needed and yet visualizable area depends on an effective diameter of lenses and mirrors. Unlike these techniques, BOS utilizes correlation on a background textured image to characterize high-pressure region in compressible flows with good spatial resolution. In this study, all experiments are conducted within a supersonic wind tunnel while Mach number is modified. After taking two dimensional images, they are reconstructed in 3D by means of tomography. The future goal aims to reveal the interaction between free-stream flow and high-pressure region in a compressible flow.

Publication Date

1-1-2018

Publication Title

AIAA Aerospace Sciences Meeting, 2018

Issue

210059

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.2514/6.2018-1613

Socpus ID

85044619422 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85044619422

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