Experimental Investigation of Multi-Jet Air Impingement in Various Conditions and Analysis using Desirability Based Response Surface Methodology
This experimental analysis encapsulates the influence of Reynolds number (Re), diameter of nozzle, height to diameter (H/D) ratio and position of nozzle such as in-line and staggered over the responses heat transfer coefficient, temperature and Nusselt number of a hot flat plate exposed to cooling b...
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| Format: | Article |
| Language: | English |
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Isfahan University of Technology
2021-01-01
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| Series: | Journal of Applied Fluid Mechanics |
| Subjects: | |
| Online Access: | http://jafmonline.net/JournalArchive/download?file_ID=54348&issue_ID=1010 |
| _version_ | 1818143232341573632 |
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| author | P. Chandramohan S. N. Murugesan S. Arivazhagan |
| author_facet | P. Chandramohan S. N. Murugesan S. Arivazhagan |
| author_sort | P. Chandramohan |
| collection | DOAJ |
| description | This experimental analysis encapsulates the influence of Reynolds number (Re), diameter of nozzle, height to diameter (H/D) ratio and position of nozzle such as in-line and staggered over the responses heat transfer coefficient, temperature and Nusselt number of a hot flat plate exposed to cooling by multi-jet air impingement. For this analysis, a 15 x 10 cm flat plate is being heated using a heating coil having a heat flux of 7666.67 W/m2 which is maintained as constant through entire experiment. An H/D ratio of 2D, 4D and 6D is considered along with pipe diameters of 4, 6 and 8 mm and Reynolds number are changed between 18000 to 22000. Experimental design was performed with response surface methodology based central composite design. For all output responses, a quadratic model is chosen for analysis and a second order mathematical model is evolved for predicting with a higher R2 value. Desirability analysis is performed for multi-objective optimization and the optimum input parameters obtained are Reynolds no. of 20347, pipe diameter of 8 mm, H/D ratio of 2 and in-line nozzle position with the maximum heat transfer coefficient of 189.411 W/m2 K, Nusselt number of 28.8712 and minimum temperature of 56.983°C. Optimum condition-based confirmation experiments result in enhanced Nusselt number and heat transfer coefficient. |
| first_indexed | 2024-12-11T11:28:24Z |
| format | Article |
| id | doaj.art-5f3b301017464639b078d8a7e4d2df05 |
| institution | Directory Open Access Journal |
| issn | 1735-3572 |
| language | English |
| last_indexed | 2024-12-11T11:28:24Z |
| publishDate | 2021-01-01 |
| publisher | Isfahan University of Technology |
| record_format | Article |
| series | Journal of Applied Fluid Mechanics |
| spelling | doaj.art-5f3b301017464639b078d8a7e4d2df052022-12-22T01:08:57ZengIsfahan University of TechnologyJournal of Applied Fluid Mechanics1735-35722021-01-01141131145.Experimental Investigation of Multi-Jet Air Impingement in Various Conditions and Analysis using Desirability Based Response Surface MethodologyP. Chandramohan0S. N. Murugesan1S. Arivazhagan2Misrimal Navajee Munoth Jain Engineering College, Chennai, Tamilnadu, IndiaRajalakshmi Engineering College, Chennai, Tamilnadu, IndiaSt. Joseph’s College of Engineering, Chennai, Tamilnadu, IndiaThis experimental analysis encapsulates the influence of Reynolds number (Re), diameter of nozzle, height to diameter (H/D) ratio and position of nozzle such as in-line and staggered over the responses heat transfer coefficient, temperature and Nusselt number of a hot flat plate exposed to cooling by multi-jet air impingement. For this analysis, a 15 x 10 cm flat plate is being heated using a heating coil having a heat flux of 7666.67 W/m2 which is maintained as constant through entire experiment. An H/D ratio of 2D, 4D and 6D is considered along with pipe diameters of 4, 6 and 8 mm and Reynolds number are changed between 18000 to 22000. Experimental design was performed with response surface methodology based central composite design. For all output responses, a quadratic model is chosen for analysis and a second order mathematical model is evolved for predicting with a higher R2 value. Desirability analysis is performed for multi-objective optimization and the optimum input parameters obtained are Reynolds no. of 20347, pipe diameter of 8 mm, H/D ratio of 2 and in-line nozzle position with the maximum heat transfer coefficient of 189.411 W/m2 K, Nusselt number of 28.8712 and minimum temperature of 56.983°C. Optimum condition-based confirmation experiments result in enhanced Nusselt number and heat transfer coefficient.http://jafmonline.net/JournalArchive/download?file_ID=54348&issue_ID=1010jet impingement cooling; heat transfer; response surface methodology; nusselt number; staggered and inline position; reynolds number. |
| spellingShingle | P. Chandramohan S. N. Murugesan S. Arivazhagan Experimental Investigation of Multi-Jet Air Impingement in Various Conditions and Analysis using Desirability Based Response Surface Methodology Journal of Applied Fluid Mechanics jet impingement cooling; heat transfer; response surface methodology; nusselt number; staggered and inline position; reynolds number. |
| title | Experimental Investigation of Multi-Jet Air Impingement in Various Conditions and Analysis using Desirability Based Response Surface Methodology |
| title_full | Experimental Investigation of Multi-Jet Air Impingement in Various Conditions and Analysis using Desirability Based Response Surface Methodology |
| title_fullStr | Experimental Investigation of Multi-Jet Air Impingement in Various Conditions and Analysis using Desirability Based Response Surface Methodology |
| title_full_unstemmed | Experimental Investigation of Multi-Jet Air Impingement in Various Conditions and Analysis using Desirability Based Response Surface Methodology |
| title_short | Experimental Investigation of Multi-Jet Air Impingement in Various Conditions and Analysis using Desirability Based Response Surface Methodology |
| title_sort | experimental investigation of multi jet air impingement in various conditions and analysis using desirability based response surface methodology |
| topic | jet impingement cooling; heat transfer; response surface methodology; nusselt number; staggered and inline position; reynolds number. |
| url | http://jafmonline.net/JournalArchive/download?file_ID=54348&issue_ID=1010 |
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