Investigation of effect of process parameters on suddenly expanded flows through an axi-symmetric nozzle for different Mach numbers using design of experiments
Experiments are conducted to determine base pressure variation through micro-jets from a suddenly expanded axisymmetric passage. Four micro-jets having an orifice diameter of 1mm are situated at 900 interims along the base at 6.5 mm from the geometrical axis of the main jet. The Mach number and L/D...
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| Format: | Proceeding Paper |
| Language: | English English |
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IOP Publishing
2017
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| Online Access: | http://irep.iium.edu.my/56872/ http://irep.iium.edu.my/56872/7/56872.pdf http://irep.iium.edu.my/56872/8/56872-Investigation%20of%20effect%20of%20process%20parameters%20on%20suddenly%20Expanded%20flows%20through%20an%20axi-symmetric%20nozzle_SCOPUS.pdf |
| _version_ | 1848784822678323200 |
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| author | Quadros, Jaimon Dennis Khan, Sher Afghan Antony, A J |
| author_facet | Quadros, Jaimon Dennis Khan, Sher Afghan Antony, A J |
| author_sort | Quadros, Jaimon Dennis |
| building | IIUM Repository |
| collection | Online Access |
| description | Experiments are conducted to determine base pressure variation through micro-jets from a suddenly expanded axisymmetric passage. Four micro-jets having an orifice diameter of 1mm are situated at 900 interims along the base at 6.5 mm from the geometrical axis of the main jet. The Mach number and L/D ratios were the process parameters employed in the study. The flow stream was extended all of a sudden into an axi-symmetric duct of 4.84 cross-sectional area for all the Mach numbers and L/D ratios respectively. The test Mach numbers used in the study was 2, 2.5 and 3; length-to-diameter ratios selected for the sudden expansion tube were 4, 6 and 8. The jets were operated at an overexpansion level of (Pe/Pa = 0.277). The experiments are conducted as per Taguchi design of experiments. From this investigation, one will be able to identify the enlargement length to diameter ratio resulting in maximum increasing or decreasing base pressure. Mathematical models are also developed for base pressure based on Mach number and L/D ratio with a maximum error of ± 10%. |
| first_indexed | 2025-11-14T16:43:21Z |
| format | Proceeding Paper |
| id | iium-56872 |
| institution | International Islamic University Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-14T16:43:21Z |
| publishDate | 2017 |
| publisher | IOP Publishing |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | iium-568722017-05-18T01:11:54Z http://irep.iium.edu.my/56872/ Investigation of effect of process parameters on suddenly expanded flows through an axi-symmetric nozzle for different Mach numbers using design of experiments Quadros, Jaimon Dennis Khan, Sher Afghan Antony, A J T Technology (General) Experiments are conducted to determine base pressure variation through micro-jets from a suddenly expanded axisymmetric passage. Four micro-jets having an orifice diameter of 1mm are situated at 900 interims along the base at 6.5 mm from the geometrical axis of the main jet. The Mach number and L/D ratios were the process parameters employed in the study. The flow stream was extended all of a sudden into an axi-symmetric duct of 4.84 cross-sectional area for all the Mach numbers and L/D ratios respectively. The test Mach numbers used in the study was 2, 2.5 and 3; length-to-diameter ratios selected for the sudden expansion tube were 4, 6 and 8. The jets were operated at an overexpansion level of (Pe/Pa = 0.277). The experiments are conducted as per Taguchi design of experiments. From this investigation, one will be able to identify the enlargement length to diameter ratio resulting in maximum increasing or decreasing base pressure. Mathematical models are also developed for base pressure based on Mach number and L/D ratio with a maximum error of ± 10%. IOP Publishing 2017-04-03 Proceeding Paper PeerReviewed application/pdf en http://irep.iium.edu.my/56872/7/56872.pdf application/pdf en http://irep.iium.edu.my/56872/8/56872-Investigation%20of%20effect%20of%20process%20parameters%20on%20suddenly%20Expanded%20flows%20through%20an%20axi-symmetric%20nozzle_SCOPUS.pdf Quadros, Jaimon Dennis and Khan, Sher Afghan and Antony, A J (2017) Investigation of effect of process parameters on suddenly expanded flows through an axi-symmetric nozzle for different Mach numbers using design of experiments. In: 3rd International Conference on Mechanical, Automotive and Aerospace Engineering 2016 (ICMAAE’16), 25th-27th July 2016, Kuala Lumpur, Malaysia. http://iopscience.iop.org/article/10.1088/1757-899X/184/1/012005/pdf 10.1088/1757-899X/184/1/012005 |
| spellingShingle | T Technology (General) Quadros, Jaimon Dennis Khan, Sher Afghan Antony, A J Investigation of effect of process parameters on suddenly expanded flows through an axi-symmetric nozzle for different Mach numbers using design of experiments |
| title | Investigation of effect of process parameters on suddenly expanded flows through an axi-symmetric nozzle for different Mach numbers using design of experiments |
| title_full | Investigation of effect of process parameters on suddenly expanded flows through an axi-symmetric nozzle for different Mach numbers using design of experiments |
| title_fullStr | Investigation of effect of process parameters on suddenly expanded flows through an axi-symmetric nozzle for different Mach numbers using design of experiments |
| title_full_unstemmed | Investigation of effect of process parameters on suddenly expanded flows through an axi-symmetric nozzle for different Mach numbers using design of experiments |
| title_short | Investigation of effect of process parameters on suddenly expanded flows through an axi-symmetric nozzle for different Mach numbers using design of experiments |
| title_sort | investigation of effect of process parameters on suddenly expanded flows through an axi-symmetric nozzle for different mach numbers using design of experiments |
| topic | T Technology (General) |
| url | http://irep.iium.edu.my/56872/ http://irep.iium.edu.my/56872/ http://irep.iium.edu.my/56872/ http://irep.iium.edu.my/56872/7/56872.pdf http://irep.iium.edu.my/56872/8/56872-Investigation%20of%20effect%20of%20process%20parameters%20on%20suddenly%20Expanded%20flows%20through%20an%20axi-symmetric%20nozzle_SCOPUS.pdf |