Experimental and numerical investigation of expansion corner effects on isolator performance
In the present study, the effect of the expansion corner on the suddenly expanded flow process has been studied. Experimental investigations have been carried out on a convergent-divergent (C-D) nozzle and isolator duct, where the expansion of the channel is formed through the presence of a 1, 2, an...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English English |
| Published: |
2020 Walter de Gruyter GmbH
2023
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/83922/7/83922_Experimental%20and%20numerical%20edited.pdf http://irep.iium.edu.my/83922/8/83922_Experimental%20and%20numerical%20investigation%20of%20expansion%20corner%20effects%20on%20isolator%20performance%20_%20SCOPUS.pdf http://irep.iium.edu.my/83922/ https://www.degruyter.com/view/journals/tjj/ahead-of-print/article-10.1515-tjeng-2020-0032/article-10.1515-tjeng-2020-0032.xml https://doi.org/10.1515/tjeng-2020-0032 |
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| Summary: | In the present study, the effect of the expansion corner on the suddenly expanded flow process has been studied. Experimental investigations have been carried out on a convergent-divergent (C-D) nozzle and isolator duct, where the expansion of the channel is formed through the presence of a 1, 2, and 3 expansion corners (EC) respectively. Flow from nozzle exit of the nozzle of Mach, M = 2.0 was suddenly expanded into the axi-symmetric duct having a
cross-sectional area of 4.84 times the nozzle exit area. The
wall static pressure along the length of the duct and the
Pitot pressure at the exit plane of the duct was measured
for all the configurations. Computational fluid dynamics
(CFD) the technique was employed for visualizing the shock train in the expanded duct. The isolator with one expansion
a corner was found to be more efficient in achieving a
high static pressure rise. The experimental and numerical
wall static pressure distribution values were compared for
isolators with EC = 2 and found to be in good agreement
with each other with a maximum absolute percentage deviation of 11%. |
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