Curved jetting anomaly following conical shock wave reflection

R. T. Paton; D. van Aswegen

doi:10.1117/12.2523915

28 January 2019 Curved jetting anomaly following conical shock wave reflection

R. T. Paton, D. van Aswegen

Proceedings Volume 11051, 32nd International Congress on High-Speed Imaging and Photonics; 1105109 (2019) https://doi.org/10.1117/12.2523915
Event: International Conference on High-Speed Imaging and Photonics 2018, 2018, Enschede, The Netherlands

Abstract

The dynamics of a converging conical shock wave were first considered theoretically as a mechanism for generating high pressures for the initiation of nuclear fusion. However, an anomaly was identified whereby the axial jet curved away from the system axis, seemingly related to occlusions of the shock tube upstream, during some experimental tests of these dynamics. This study confirms the effect of upstream occlusion on jet deflection though the mechanism is unclear as the jet may curve either toward or away from the upstream occlusion azimuth depending on the distance from the reflection point. The primary mechanisms suggested are either the wake of the upstream occlusion and the contingent momentum deficit, or else the effect of the occlusion on the shape of the conical shock wave at focus. Further numerical work is suggested as a means of resolving this.

Citation Download Citation

R. T. Paton and D. van Aswegen "Curved jetting anomaly following conical shock wave reflection", Proc. SPIE 11051, 32nd International Congress on High-Speed Imaging and Photonics, 1105109 (28 January 2019); https://doi.org/10.1117/12.2523915

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