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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Main Authors:	Siddique, Mohd Umair, Gulhane, N P, Al-Robaian, Abdul Rehman A, Khan, Sher Afghan
Format:	Article
Language:	English English English
Published:	Materials and Energy Research Center 2019
Subjects:	TJ163.26 Energy conservation
Online Access:	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

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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
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English English English
topic	TJ163.26 Energy conservation
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
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.
format	Article
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
title	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_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_sort	on numerical investigation of semi-empirical relations representing local nusselt number at lower nozzle-target spacing’s
publisher	Materials and Energy Research Center
publishDate	2019
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
first_indexed	2023-09-18T21:40:26Z
last_indexed	2023-09-18T21:40:26Z
_version_	1777413103592407040

On numerical investigation of semi-empirical relations representing local nusselt number at lower nozzle-target spacing’s

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