On the vortex identification within a linear blade cascade - an experimental research
This paper deals with the identification of the individual vortical structures within a linear blade cascade based on H criteria. The experimental data obtained from the pressure measurement at the cascade outlet were evaluated by a standard procedure to obtain the velocity field in one plane. Then...
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| Format: | Article |
| Language: | English |
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CTU Central Library
2024-03-01
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| Series: | Acta Polytechnica |
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| Online Access: | https://ojs.cvut.cz/ojs/index.php/ap/article/view/9475 |
| _version_ | 1797262464700645376 |
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| author | Erik Flídr |
| author_facet | Erik Flídr |
| author_sort | Erik Flídr |
| collection | DOAJ |
| description |
This paper deals with the identification of the individual vortical structures within a linear blade cascade based on H criteria. The experimental data obtained from the pressure measurement at the cascade outlet were evaluated by a standard procedure to obtain the velocity field in one plane. Then, the vorticity in the flow field was evaluated based on Crocco’s theorem, and in the final step, the helicity density was calculated. The impact of the inlet flow angle on the velocity field as well as on the vortical structures was investigated. The effect of the value of the H threshold on the vortex identification is discussed in the last part of the paper.
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| first_indexed | 2024-04-24T23:57:32Z |
| format | Article |
| id | doaj.art-bdde2fed2d194919b1e6f7dad4549170 |
| institution | Directory Open Access Journal |
| issn | 1805-2363 |
| language | English |
| last_indexed | 2024-04-24T23:57:32Z |
| publishDate | 2024-03-01 |
| publisher | CTU Central Library |
| record_format | Article |
| series | Acta Polytechnica |
| spelling | doaj.art-bdde2fed2d194919b1e6f7dad45491702024-03-14T11:26:13ZengCTU Central LibraryActa Polytechnica1805-23632024-03-0164110.14311/AP.2024.64.0018On the vortex identification within a linear blade cascade - an experimental researchErik Flídr0Czech Aerospace Research Centre, Laboratory of High-Speed Aerodynamics, Beranových 130, 199 00 Prague - Letňany This paper deals with the identification of the individual vortical structures within a linear blade cascade based on H criteria. The experimental data obtained from the pressure measurement at the cascade outlet were evaluated by a standard procedure to obtain the velocity field in one plane. Then, the vorticity in the flow field was evaluated based on Crocco’s theorem, and in the final step, the helicity density was calculated. The impact of the inlet flow angle on the velocity field as well as on the vortical structures was investigated. The effect of the value of the H threshold on the vortex identification is discussed in the last part of the paper. https://ojs.cvut.cz/ojs/index.php/ap/article/view/9475linear blade cascadevortex identificationH criteriaexperimental researchpressure measurements |
| spellingShingle | Erik Flídr On the vortex identification within a linear blade cascade - an experimental research Acta Polytechnica linear blade cascade vortex identification H criteria experimental research pressure measurements |
| title | On the vortex identification within a linear blade cascade - an experimental research |
| title_full | On the vortex identification within a linear blade cascade - an experimental research |
| title_fullStr | On the vortex identification within a linear blade cascade - an experimental research |
| title_full_unstemmed | On the vortex identification within a linear blade cascade - an experimental research |
| title_short | On the vortex identification within a linear blade cascade - an experimental research |
| title_sort | on the vortex identification within a linear blade cascade an experimental research |
| topic | linear blade cascade vortex identification H criteria experimental research pressure measurements |
| url | https://ojs.cvut.cz/ojs/index.php/ap/article/view/9475 |
| work_keys_str_mv | AT erikflidr onthevortexidentificationwithinalinearbladecascadeanexperimentalresearch |