Abstract
An optical bench study has been carried out to assess the effects of both beam alignment and nonconical disturbances in the application of conical shadowgraphy for flow visualization. Conical and quasiconical plastic test models were immersed in a refractive index matching fluid and then examined by shadowgraphy with a conical light beam. The results show that problems of interpretation may arise due to both axial and transverse beam misalignment. Among these difficulties, axial misalignment with positive vertex displacement is the least serious. Also, the effect of a particular nonconical disturbance field was found to introduce fewer difficulties of interpretation than that of beam misalignment.
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Alekseev, V. N.; Gonor, A. L. 1974: Optical investigation of three-dimensional supersonic flow. Izvestiya Akademii Nauk SSSR, Mekhanika Zhidkosti i Gaza 1, 179–185
Anderson, H. L., ed. 1982: Physics Vade Mecum, American Institue of Physics
Dvorak, V. 1880: Über eine neue einfache Art der Schlierenbeobachtung. Ann. Phys. Chem. 9, 502–512
Love, E. S.; Grigsby, C. E. 1953: A new shadowgraph technique for the observation of conical flow phenomena in supersonic flow and preliminary results obtained for a triangular wing. NACA TN 2950
Pierce, D.; Treadgold, D. 1964: Some examples of the use of a conical shadowgraph technique. British ARC CP-763
Schardin, H. 1942: Schlierenverfahren und ihre Anwendungen. Ergebnisse der exakten Naturwissenschaften 20, 303–439 (see also NASA TTF-12731, 1970)
Settles, G. S.; Teng, H. Y. 1983: Flow visualization methods for separated three-dimensional shock wave/turbulent boundary layer interactions. AIAA J. 21, 390–397
Zubin, M. A.; Ostapenko, N. A. 1979: Structure of flow in the separation region resulting from interaction of a normal shock wave with a boundary layer in a corner. Izvestiya Akademii Nauk SSSR, Mekhanika Zhidkosti i Gaza 3, 51–58
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Schmidt, M.C., Settles, G.S. Alignment and application of the conical shadowgraph flow visualization technique. Experiments in Fluids 4, 93–96 (1986). https://doi.org/10.1007/BF00266565
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DOI: https://doi.org/10.1007/BF00266565