Area change effects on shock wave propagation.
| dc.contributor.author | Dowse, Jonathan Neil. | |
| dc.date.accessioned | 2014-02-17T12:58:40Z | |
| dc.date.available | 2014-02-17T12:58:40Z | |
| dc.date.issued | 2014-02-17 | |
| dc.description.abstract | The work presented in this dissertation describes the effects that an area change has on shock wave propagation. Of particular interest is the analysis and optimisation of a gradual area reduction whereby a shock wave may be optimally strengthened. Experimental testing is conducted for a planar shock wave of A1s = 1.33 propagating through one of three cornpound parabolic profiles of 130, 195 or 260mm in length, all of which exhibit an 80% reduction in area. Experimental images were captured using an innovative colour schlieren setup for high- resolution images and lower resolution high-speed video. Results showed that there exists three main types of flow scenarios for propagation through a gradual area reduction, and an optimal net increase of 12.7% in shock Mach number was calculated for the longest profile of 260m.m which was predicted to within 5% theoretical predictions using Milton's (1975) modified CCW Relation. | en_ZA |
| dc.identifier.uri | http://hdl.handle.net10539/13795 | |
| dc.language.iso | en | en_ZA |
| dc.title | Area change effects on shock wave propagation. | en_ZA |
| dc.type | Thesis | en_ZA |
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