Full Text Available
Note: Clicking the button above will open the full text document at the original institutional repository in a new window.
An evaluation of a scale model medium speed wind tunnel
Thesis (MEng)--University of Stellenbosch, 1997.
Saved in:
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Thesis |
| Language: | en_ZA |
| Published: |
Stellenbosch : Stellenbosch University
2012
|
| Subjects: | |
| Tags: |
No Tags, Be the first to tag this record!
|
| _version_ | 1867613798964133888 |
|---|---|
| access_status_str | Open Access |
| author | Strohmaier, Christian Karl-Heinz |
| author2 | Von Backstrom, T. W.
|
| author_browse | Strohmaier, Christian Karl-Heinz Von Backstrom, T. W. |
| author_facet | Von Backstrom, T. W.
Strohmaier, Christian Karl-Heinz |
| author_sort | Strohmaier, Christian Karl-Heinz |
| collection | Thesis |
| dc_rights_str_mv | Stellenbosch University |
| description | Thesis (MEng)--University of Stellenbosch, 1997. |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/55373 |
| institution | Stellenbosch University (South Africa) |
| language | en_ZA |
| last_indexed | 2026-06-10T12:41:52.972Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository |
| publishDate | 2012 |
| publishDateRange | 2012 |
| publishDateSort | 2012 |
| publisher | Stellenbosch : Stellenbosch University |
| publisherStr | Stellenbosch : Stellenbosch University |
| record_format | dspace |
| source_str | SUNScholar — Stellenbosch University Repository |
| spelling | oai:scholar.sun.ac.za:10019.1/55373 An evaluation of a scale model medium speed wind tunnel Strohmaier, Christian Karl-Heinz Von Backstrom, T. W. Stellenbosch University. Faculty of Engineering. Dept. of Mechanical and Mechatronic Engineering. Wind tunnel models Compressors -- Aerodynamics Wind tunnels UCTD Thesis (MEng)--University of Stellenbosch, 1997. ENGLISH ABSTRACT: This thesis refers to the Medium Speed Wind Tunnel (MSWT) used by the Council for Scientific and Industrial research (CSIR) in Pretoria, South Africa. A scale model wind tunnel, designed by the author, models the MSWT in order to find the flow distortion at the inlet face of the compressor. The thesis contains three-dimensional flow maps, mapped at the compressor inlet with the aid of a five-hole pneumatic probe. The main objective is to generate these maps which may indicate conditions unfavourable to the performance of the compressor. The secondary objective is to evaluate the tunnel components with regard to their stagnation pressure loss contributions. The thesis itself consists of four main elements. Firstly, preparation of the instrumentation, which includes the five-hole probe calibration. Secondly, to design and manufacture a scale- model wind tunnel. Thirdly, development of software capable of sampling the five probe pressures and controlling the automated scanning device. Finally, sampling the flow field at the compressor inlet that includes the processing of this data. The thesis found the transition section to contribute a comparatively large stagnation pressure loss, causing a substantial increase in the compressor load. The compressor inlet data indicated a high level of stagnation pressure distortion. This may have an adverse effect on the surge margin of the compressor, limiting its operational range. AFRIKAANSE OPSOMMING: Hierdie tesis verwys na die Medium Spoed Wind Tonnel (MSWT) soos gebruik deur die Wetenskaplike, Nywerheids en Navorsings Raad (WNNR) in Pretoria, Suid-Afrika. 'n Skaalmodel wind tonnel, deur die skrywer ontwerp, modelleer die MSWT met die doel om die kompressorinlaat vloeidistorsie te bepaal. Die tesis bevat drie dimensionele vloei kaarte, opgestel by die kompressorinlaat met behulp van 'n vyfgat pneumatiese sensor. Die hoof doelwit is om die vloei kaare te genereer om sodoende te probeer bepaal of die inlaattoestande ongunstig is vir die werking van die compressor. Die sekondêre doelwit is om die windtonnel komponente te ondersoek met betrekking tot elk se bydrae tot die totale stagnasie druk verlies. Die tesis bestaan uit vier hoof elemente. Eerstens die voorbereiding van die instrumentasie wat insluit die kalibrasie van die vyfgat sensor. Tweedens, die ontwerp en vervaardiging van 'n skaalmodel tonnel. Derdens, die ontwikkeling van sagteware wat outomaties die vyf sensor drukke meet en instruksies aan die outomatiese skandeerder deurstuur. Laastens, die opmeet van die vloeiveld by die kompressor inlaat, insluitend die verwerking van die data. Een van die tonnel komponente, die oorgang van vierkant na rand, was verantwoordelik vir 'n vergelykend hoë druk verlies wat in aansienlike toename in die kompressor lading tot gevolg het. Daarbenewens vertoon die kompressorinlaat 'n hoë mate van distorsie wat die stuwingslyn daarvan verlaag met 'n gevolglike verkleining van die werksgebied daarvan. Masters 2012-08-27T11:37:02Z 2012-08-27T11:37:02Z 1997-04 Thesis http://hdl.handle.net/10019.1/55373 en_ZA Stellenbosch University 211 pages : illustrations application/pdf Stellenbosch : Stellenbosch University |
| spellingShingle | Wind tunnel models Compressors -- Aerodynamics Wind tunnels UCTD Strohmaier, Christian Karl-Heinz An evaluation of a scale model medium speed wind tunnel |
| title | An evaluation of a scale model medium speed wind tunnel |
| title_full | An evaluation of a scale model medium speed wind tunnel |
| title_fullStr | An evaluation of a scale model medium speed wind tunnel |
| title_full_unstemmed | An evaluation of a scale model medium speed wind tunnel |
| title_short | An evaluation of a scale model medium speed wind tunnel |
| title_sort | evaluation of a scale model medium speed wind tunnel |
| topic | Wind tunnel models Compressors -- Aerodynamics Wind tunnels UCTD |
| url | http://hdl.handle.net/10019.1/55373 |
| work_keys_str_mv | AT strohmaierchristiankarlheinz anevaluationofascalemodelmediumspeedwindtunnel AT strohmaierchristiankarlheinz evaluationofascalemodelmediumspeedwindtunnel |