PERFORMANCE OF AN AIR-AIR EJECTOR: AN ATTEMPT AT NUMERICAL MODELLING
The paper describes a numerical attempt to model the operation of an air-air ejector by means of a commercial numerical code. The obtained results are compared with the results of a laboratory experiment – particularly in relation to the diffuser of the modelled ejector. The substantial discrepanci...
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| Format: | Article |
| Language: | English |
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Gdańsk University of Technology
2003-07-01
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| Series: | TASK Quarterly |
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| Online Access: | https://journal.mostwiedzy.pl/TASKQuarterly/article/view/2194 |
| _version_ | 1818242364038184960 |
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| author | WOJCIECH SOBIESKI |
| author_facet | WOJCIECH SOBIESKI |
| author_sort | WOJCIECH SOBIESKI |
| collection | DOAJ |
| description |
The paper describes a numerical attempt to model the operation of an air-air ejector by means of a commercial numerical code. The obtained results are compared with the results of a laboratory experiment – particularly in relation to the diffuser of the modelled ejector. The substantial discrepancies between the performance characteristics obtained in the laboratory experiment and by numerical modelling are interpreted as a result of the absence of appropriate models of turbulence and mixing in the numerical code used. The paper also presents additional numerical simulations that emphasize the importance of unsteady phenomena (bifurcations of working fluid jet, turbulent mixing at the boundary of components) in the modelling of ejector equipment.
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| first_indexed | 2024-12-12T13:44:03Z |
| format | Article |
| id | doaj.art-125591e208844ed7b6aac19f73d6aa4a |
| institution | Directory Open Access Journal |
| issn | 1428-6394 |
| language | English |
| last_indexed | 2024-12-12T13:44:03Z |
| publishDate | 2003-07-01 |
| publisher | Gdańsk University of Technology |
| record_format | Article |
| series | TASK Quarterly |
| spelling | doaj.art-125591e208844ed7b6aac19f73d6aa4a2022-12-22T00:22:43ZengGdańsk University of TechnologyTASK Quarterly1428-63942003-07-0173PERFORMANCE OF AN AIR-AIR EJECTOR: AN ATTEMPT AT NUMERICAL MODELLINGWOJCIECH SOBIESKI0University of Warmia and Mazury, Division of Mechanics and Machinery Construction The paper describes a numerical attempt to model the operation of an air-air ejector by means of a commercial numerical code. The obtained results are compared with the results of a laboratory experiment – particularly in relation to the diffuser of the modelled ejector. The substantial discrepancies between the performance characteristics obtained in the laboratory experiment and by numerical modelling are interpreted as a result of the absence of appropriate models of turbulence and mixing in the numerical code used. The paper also presents additional numerical simulations that emphasize the importance of unsteady phenomena (bifurcations of working fluid jet, turbulent mixing at the boundary of components) in the modelling of ejector equipment. https://journal.mostwiedzy.pl/TASKQuarterly/article/view/2194fluid mechanicsejectorsnumerical calculations |
| spellingShingle | WOJCIECH SOBIESKI PERFORMANCE OF AN AIR-AIR EJECTOR: AN ATTEMPT AT NUMERICAL MODELLING TASK Quarterly fluid mechanics ejectors numerical calculations |
| title | PERFORMANCE OF AN AIR-AIR EJECTOR: AN ATTEMPT AT NUMERICAL MODELLING |
| title_full | PERFORMANCE OF AN AIR-AIR EJECTOR: AN ATTEMPT AT NUMERICAL MODELLING |
| title_fullStr | PERFORMANCE OF AN AIR-AIR EJECTOR: AN ATTEMPT AT NUMERICAL MODELLING |
| title_full_unstemmed | PERFORMANCE OF AN AIR-AIR EJECTOR: AN ATTEMPT AT NUMERICAL MODELLING |
| title_short | PERFORMANCE OF AN AIR-AIR EJECTOR: AN ATTEMPT AT NUMERICAL MODELLING |
| title_sort | performance of an air air ejector an attempt at numerical modelling |
| topic | fluid mechanics ejectors numerical calculations |
| url | https://journal.mostwiedzy.pl/TASKQuarterly/article/view/2194 |
| work_keys_str_mv | AT wojciechsobieski performanceofanairairejectoranattemptatnumericalmodelling |