Effect of Hydraulic Diameter on Potential Core Decay of Supersonic Jets
Various studies dealing with decay characteristics of circular and noncircular supersonic jets were conducted by previous researchers. But in these studies due emphasis was not given to the hydraulic diameter (Dh), shape factor (ζ) & the nozzle lip parameters which have significant impact on the...
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| Format: | Article |
| Language: | English |
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National Institute for Aerospace Research “Elie Carafoli” - INCAS
2020-03-01
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| Series: | INCAS Bulletin |
| Subjects: | |
| Online Access: | http://bulletin.incas.ro/files/mohanta-p-k__sridhar-b-t-n__vol_12_iss_1.pdf |
| _version_ | 1819084373637464064 |
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| author | Prasanta Kumar MOHANTA B. T. N. SRIDHAR |
| author_facet | Prasanta Kumar MOHANTA B. T. N. SRIDHAR |
| author_sort | Prasanta Kumar MOHANTA |
| collection | DOAJ |
| description | Various studies dealing with decay characteristics of circular and noncircular supersonic jets were conducted by previous researchers. But in these studies due emphasis was not given to the hydraulic diameter (Dh), shape factor (ζ) & the nozzle lip parameters which have significant impact on the characteristics of noncircular supersonic jet. In this study, it has been shown that these parameters played a significant role on supersonic core decay characteristics [2, 3, 6] of the jet. The scope of this study included supersonic core length (Lc), decay pattern, due to noncircular shaped nozzle. In the literature, the supersonic jet characterization and the related experimental correlation are available for optimum expansion conditions whereas for other expansion (under and over) conditions the experimental correlation is barely available. While investigating experimentally, new empirical relations were obtained which were the improved forms of earlier correlations for supersonic core length [4]. For experiments, six different types of nozzles (circular, hexagon, square, triangular, elliptical and rectangular) with the same exit to throat area ratio, convergent length and divergent length were used. The results obtained from the experimentally developed correlations were coherent with numerical results, experimental data and flow visualization. |
| first_indexed | 2024-12-21T20:47:26Z |
| format | Article |
| id | doaj.art-519849c8ce854aea9f1ec9f92e24992a |
| institution | Directory Open Access Journal |
| issn | 2066-8201 2247-4528 |
| language | English |
| last_indexed | 2024-12-21T20:47:26Z |
| publishDate | 2020-03-01 |
| publisher | National Institute for Aerospace Research “Elie Carafoli” - INCAS |
| record_format | Article |
| series | INCAS Bulletin |
| spelling | doaj.art-519849c8ce854aea9f1ec9f92e24992a2022-12-21T18:50:47ZengNational Institute for Aerospace Research “Elie Carafoli” - INCASINCAS Bulletin2066-82012247-45282020-03-0112111912610.13111/2066-8201.2020.12.1.11Effect of Hydraulic Diameter on Potential Core Decay of Supersonic JetsPrasanta Kumar MOHANTA0B. T. N. SRIDHAR1Institute of Aeronautical Engineering, Dundigal, Hyderabad-500 043, India, prasanta.mohanta@gmail.com2Department of Aerospace Engineering, Madras Institute of Technology, Anna University, Chennai-600 044 India, sridhar@mitindia.eduVarious studies dealing with decay characteristics of circular and noncircular supersonic jets were conducted by previous researchers. But in these studies due emphasis was not given to the hydraulic diameter (Dh), shape factor (ζ) & the nozzle lip parameters which have significant impact on the characteristics of noncircular supersonic jet. In this study, it has been shown that these parameters played a significant role on supersonic core decay characteristics [2, 3, 6] of the jet. The scope of this study included supersonic core length (Lc), decay pattern, due to noncircular shaped nozzle. In the literature, the supersonic jet characterization and the related experimental correlation are available for optimum expansion conditions whereas for other expansion (under and over) conditions the experimental correlation is barely available. While investigating experimentally, new empirical relations were obtained which were the improved forms of earlier correlations for supersonic core length [4]. For experiments, six different types of nozzles (circular, hexagon, square, triangular, elliptical and rectangular) with the same exit to throat area ratio, convergent length and divergent length were used. The results obtained from the experimentally developed correlations were coherent with numerical results, experimental data and flow visualization.http://bulletin.incas.ro/files/mohanta-p-k__sridhar-b-t-n__vol_12_iss_1.pdfnon-circular jetpotential coreexit-geometryhydraulic diameterdecay characteristicsjet mixing |
| spellingShingle | Prasanta Kumar MOHANTA B. T. N. SRIDHAR Effect of Hydraulic Diameter on Potential Core Decay of Supersonic Jets INCAS Bulletin non-circular jet potential core exit-geometry hydraulic diameter decay characteristics jet mixing |
| title | Effect of Hydraulic Diameter on Potential Core Decay of Supersonic Jets |
| title_full | Effect of Hydraulic Diameter on Potential Core Decay of Supersonic Jets |
| title_fullStr | Effect of Hydraulic Diameter on Potential Core Decay of Supersonic Jets |
| title_full_unstemmed | Effect of Hydraulic Diameter on Potential Core Decay of Supersonic Jets |
| title_short | Effect of Hydraulic Diameter on Potential Core Decay of Supersonic Jets |
| title_sort | effect of hydraulic diameter on potential core decay of supersonic jets |
| topic | non-circular jet potential core exit-geometry hydraulic diameter decay characteristics jet mixing |
| url | http://bulletin.incas.ro/files/mohanta-p-k__sridhar-b-t-n__vol_12_iss_1.pdf |
| work_keys_str_mv | AT prasantakumarmohanta effectofhydraulicdiameteronpotentialcoredecayofsupersonicjets AT btnsridhar effectofhydraulicdiameteronpotentialcoredecayofsupersonicjets |