Analysis of a Low-Angle Annular Expander Nozzle
An experimental and numerical analysis of a low-angle annular expander nozzle is presented to observe the variance in shock structure within the flow field. A RANS-based axisymmetric numerical model was used to evaluate flow characteristics and the model validated using experimental pressure reading...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2015-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2015/675861 |
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| _version_ | 1832549498031702016 |
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| author | Kyll Schomberg John Olsen Graham Doig |
| author_facet | Kyll Schomberg John Olsen Graham Doig |
| author_sort | Kyll Schomberg |
| collection | DOAJ |
| description | An experimental and numerical analysis of a low-angle annular expander nozzle is presented to observe the variance in shock structure within the flow field. A RANS-based axisymmetric numerical model was used to evaluate flow characteristics and the model validated using experimental pressure readings and schlieren images. Results were compared with an equivalent converging-diverging nozzle to determine the capability of the wake region in varying the effective area of a low-angle design. Comparison of schlieren images confirmed that shock closure occurred in the expander nozzle, prohibiting the wake region from affecting the area ratio. The findings show that a low angle of deflection is inherently unable to influence the effective area of an annular supersonic nozzle design. |
| format | Article |
| id | doaj-art-3823a8a4417c4432acfea87f69a13492 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-3823a8a4417c4432acfea87f69a134922025-02-03T06:11:11ZengWileyShock and Vibration1070-96221875-92032015-01-01201510.1155/2015/675861675861Analysis of a Low-Angle Annular Expander NozzleKyll Schomberg0John Olsen1Graham Doig2School of Mechanical and Manufacturing Engineering, UNSW, Sydney, NSW 2052, AustraliaSchool of Mechanical and Manufacturing Engineering, UNSW, Sydney, NSW 2052, AustraliaSchool of Mechanical and Manufacturing Engineering, UNSW, Sydney, NSW 2052, AustraliaAn experimental and numerical analysis of a low-angle annular expander nozzle is presented to observe the variance in shock structure within the flow field. A RANS-based axisymmetric numerical model was used to evaluate flow characteristics and the model validated using experimental pressure readings and schlieren images. Results were compared with an equivalent converging-diverging nozzle to determine the capability of the wake region in varying the effective area of a low-angle design. Comparison of schlieren images confirmed that shock closure occurred in the expander nozzle, prohibiting the wake region from affecting the area ratio. The findings show that a low angle of deflection is inherently unable to influence the effective area of an annular supersonic nozzle design.http://dx.doi.org/10.1155/2015/675861 |
| spellingShingle | Kyll Schomberg John Olsen Graham Doig Analysis of a Low-Angle Annular Expander Nozzle Shock and Vibration |
| title | Analysis of a Low-Angle Annular Expander Nozzle |
| title_full | Analysis of a Low-Angle Annular Expander Nozzle |
| title_fullStr | Analysis of a Low-Angle Annular Expander Nozzle |
| title_full_unstemmed | Analysis of a Low-Angle Annular Expander Nozzle |
| title_short | Analysis of a Low-Angle Annular Expander Nozzle |
| title_sort | analysis of a low angle annular expander nozzle |
| url | http://dx.doi.org/10.1155/2015/675861 |
| work_keys_str_mv | AT kyllschomberg analysisofalowangleannularexpandernozzle AT johnolsen analysisofalowangleannularexpandernozzle AT grahamdoig analysisofalowangleannularexpandernozzle |