On numerical investigation of semi-empirical relations representing local nusselt number at lower nozzle-target spacing’s
Examining the cooling rate using impingement of air jet finds a wide application in electronic packaging and micro-scale fluid heat interaction systems, While the prediction of Nusselt profile at low nozzle-target spacing is a big issue. The plot of area average Nusselt number magnitude against the...
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| Format: | Article |
| Language: | English English English |
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Materials and Energy Research Center
2019
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| Online Access: | http://irep.iium.edu.my/70748/ http://irep.iium.edu.my/70748/1/IJE_Volume%2032_Issue%201_Pages%20137-145.pdf http://irep.iium.edu.my/70748/7/70748_On%20numerical%20investigation%20of%20semi-empirical%20_wos.pdf http://irep.iium.edu.my/70748/8/70748_On%20numerical%20investigation%20of%20semi-empirical%20_scopus.pdf |
| _version_ | 1848787342981070848 |
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| author | Siddique, Mohd Umair Gulhane, N P Al-Robaian, Abdul Rehman A Khan, Sher Afghan |
| author_facet | Siddique, Mohd Umair Gulhane, N P Al-Robaian, Abdul Rehman A Khan, Sher Afghan |
| author_sort | Siddique, Mohd Umair |
| building | IIUM Repository |
| collection | Online Access |
| description | Examining the cooling rate using impingement of air jet finds a wide application in electronic packaging and micro-scale fluid heat interaction systems, While the prediction of Nusselt profile at low nozzle-target spacing is a big issue. The plot of area average Nusselt number magnitude against the nozzle-target spacing (Z/d) shows a gradual decrement in the profile up to Z/d = 1 and beyond that is steady. The present work aims to anticipate the profile of Nusselt number using semi-empirical relations. These semi-empirical relations are derived using regression analysis which is carried out between Re, Z/d and local Nusselt number. The data required for regression are obtained through computation. Numerical simulations are accomplished for different impinging and geometric parameters. The semi-empirical power-law relations are correlated between Z/d and Re. These are predicted differently for four distinct regions of the heat sink (stagnant point, near jet region, far jet region, near wall region). The developed correlations are found to bear negative exponent with Z/d and positive exponent with Re. The negative power of r/d and Z/d varies from 0.23 – 0.64 and 0.0025 – 0.38, respectively, While the exponents of Re varies in the positive range of 0.4-0.76. |
| first_indexed | 2025-11-14T17:23:25Z |
| format | Article |
| id | iium-70748 |
| institution | International Islamic University Malaysia |
| institution_category | Local University |
| language | English English English |
| last_indexed | 2025-11-14T17:23:25Z |
| publishDate | 2019 |
| publisher | Materials and Energy Research Center |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | iium-707482019-07-12T07:59:58Z http://irep.iium.edu.my/70748/ On numerical investigation of semi-empirical relations representing local nusselt number at lower nozzle-target spacing’s Siddique, Mohd Umair Gulhane, N P Al-Robaian, Abdul Rehman A Khan, Sher Afghan TJ163.26 Energy conservation Examining the cooling rate using impingement of air jet finds a wide application in electronic packaging and micro-scale fluid heat interaction systems, While the prediction of Nusselt profile at low nozzle-target spacing is a big issue. The plot of area average Nusselt number magnitude against the nozzle-target spacing (Z/d) shows a gradual decrement in the profile up to Z/d = 1 and beyond that is steady. The present work aims to anticipate the profile of Nusselt number using semi-empirical relations. These semi-empirical relations are derived using regression analysis which is carried out between Re, Z/d and local Nusselt number. The data required for regression are obtained through computation. Numerical simulations are accomplished for different impinging and geometric parameters. The semi-empirical power-law relations are correlated between Z/d and Re. These are predicted differently for four distinct regions of the heat sink (stagnant point, near jet region, far jet region, near wall region). The developed correlations are found to bear negative exponent with Z/d and positive exponent with Re. The negative power of r/d and Z/d varies from 0.23 – 0.64 and 0.0025 – 0.38, respectively, While the exponents of Re varies in the positive range of 0.4-0.76. Materials and Energy Research Center 2019 Article PeerReviewed application/pdf en http://irep.iium.edu.my/70748/1/IJE_Volume%2032_Issue%201_Pages%20137-145.pdf application/pdf en http://irep.iium.edu.my/70748/7/70748_On%20numerical%20investigation%20of%20semi-empirical%20_wos.pdf application/pdf en http://irep.iium.edu.my/70748/8/70748_On%20numerical%20investigation%20of%20semi-empirical%20_scopus.pdf Siddique, Mohd Umair and Gulhane, N P and Al-Robaian, Abdul Rehman A and Khan, Sher Afghan (2019) On numerical investigation of semi-empirical relations representing local nusselt number at lower nozzle-target spacing’s. International Journal of Engineering, 32 (1). pp. 137-145. ISSN 1025-2495 E-ISSN 1735-9244 http://www.ije.ir/Vol32/No1/A/=228 10.5829/ije.2019.32.01a.18 |
| spellingShingle | TJ163.26 Energy conservation Siddique, Mohd Umair Gulhane, N P Al-Robaian, Abdul Rehman A Khan, Sher Afghan On numerical investigation of semi-empirical relations representing local nusselt number at lower nozzle-target spacing’s |
| title | On numerical investigation of semi-empirical relations representing local nusselt number at lower nozzle-target spacing’s |
| title_full | On numerical investigation of semi-empirical relations representing local nusselt number at lower nozzle-target spacing’s |
| title_fullStr | On numerical investigation of semi-empirical relations representing local nusselt number at lower nozzle-target spacing’s |
| title_full_unstemmed | On numerical investigation of semi-empirical relations representing local nusselt number at lower nozzle-target spacing’s |
| title_short | On numerical investigation of semi-empirical relations representing local nusselt number at lower nozzle-target spacing’s |
| title_sort | on numerical investigation of semi-empirical relations representing local nusselt number at lower nozzle-target spacing’s |
| topic | TJ163.26 Energy conservation |
| url | http://irep.iium.edu.my/70748/ http://irep.iium.edu.my/70748/ http://irep.iium.edu.my/70748/ http://irep.iium.edu.my/70748/1/IJE_Volume%2032_Issue%201_Pages%20137-145.pdf http://irep.iium.edu.my/70748/7/70748_On%20numerical%20investigation%20of%20semi-empirical%20_wos.pdf http://irep.iium.edu.my/70748/8/70748_On%20numerical%20investigation%20of%20semi-empirical%20_scopus.pdf |