Numerical investigation of non-dimensional constant and empirical relation representing Nusselt profile non-uniformity

The use of air jet impingement for cooling is the most expensive task as far as the efficiency of the component is concerned not only this, but the generation of characteristic cooling over the target surface (heat sink) is of great significance in material processing firms. The conversion of the t...

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Main Authors:	Mohd, Umair Siddiqui, Ansari, Emaad, Khan, Sher Afghan, Gulhane, Nitin Parashram, Patil, Rajesh
Format:	Article
Language:	English
Published:	American Institute of Aeronautics and Astronautics 2020
Subjects:	TJ210.2 Mechanical devices and figures. Automata. Ingenious mechanism. Robots (General)
Online Access:	http://irep.iium.edu.my/77370/ http://irep.iium.edu.my/77370/ http://irep.iium.edu.my/77370/ http://irep.iium.edu.my/77370/1/77370_Numerical%20Investigation%20of%20Non-dimensional.pdf

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spelling	iium-773702020-01-28T08:09:21Z http://irep.iium.edu.my/77370/ Numerical investigation of non-dimensional constant and empirical relation representing Nusselt profile non-uniformity Mohd, Umair Siddiqui Ansari, Emaad Khan, Sher Afghan Gulhane, Nitin Parashram Patil, Rajesh TJ210.2 Mechanical devices and figures. Automata. Ingenious mechanism. Robots (General) The use of air jet impingement for cooling is the most expensive task as far as the efficiency of the component is concerned not only this, but the generation of characteristic cooling over the target surface (heat sink) is of great significance in material processing firms. The conversion of the temperature profile to a Nusselt profile is widely used when the concern of non-dimensionality comes into the picture. So, the present work reports the Nusselt profile for different impinging parameters, and the nonuniformities concerned with the profiles are evaluated. The standard deviation is the parameter used to represent the nonuniformity in the Nusselt profile for the present study. A nondimensional constant (ratio of Reynolds number and nozzle-target spacing) is defined to represent the start and end of nonuniformity in the Nusselt profile. When this constant exceeds a value of 6000, the nonuniformity in the profile ends. Also, an empirical relation representing the standard deviation is proposed in terms of the Reynolds number and nozzle-target spacing. The generation of turbulence vortices at the exit of the nozzle is responsible for the end of nonuniformity in the Nusselt profile. American Institute of Aeronautics and Astronautics 2020-01-14 Article PeerReviewed application/pdf en http://irep.iium.edu.my/77370/1/77370_Numerical%20Investigation%20of%20Non-dimensional.pdf Mohd, Umair Siddiqui and Ansari, Emaad and Khan, Sher Afghan and Gulhane, Nitin Parashram and Patil, Rajesh (2020) Numerical investigation of non-dimensional constant and empirical relation representing Nusselt profile non-uniformity. Journal of Thermophysics and Heat Transfer, 34 (1). pp. 1-15. ISSN 0887-8722 https://arc.aiaa.org/doi/10.2514/1.T5828 https://doi.org/10.2514/1.T5828
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	TJ210.2 Mechanical devices and figures. Automata. Ingenious mechanism. Robots (General)
spellingShingle	TJ210.2 Mechanical devices and figures. Automata. Ingenious mechanism. Robots (General) Mohd, Umair Siddiqui Ansari, Emaad Khan, Sher Afghan Gulhane, Nitin Parashram Patil, Rajesh Numerical investigation of non-dimensional constant and empirical relation representing Nusselt profile non-uniformity
description	The use of air jet impingement for cooling is the most expensive task as far as the efficiency of the component is concerned not only this, but the generation of characteristic cooling over the target surface (heat sink) is of great significance in material processing firms. The conversion of the temperature profile to a Nusselt profile is widely used when the concern of non-dimensionality comes into the picture. So, the present work reports the Nusselt profile for different impinging parameters, and the nonuniformities concerned with the profiles are evaluated. The standard deviation is the parameter used to represent the nonuniformity in the Nusselt profile for the present study. A nondimensional constant (ratio of Reynolds number and nozzle-target spacing) is defined to represent the start and end of nonuniformity in the Nusselt profile. When this constant exceeds a value of 6000, the nonuniformity in the profile ends. Also, an empirical relation representing the standard deviation is proposed in terms of the Reynolds number and nozzle-target spacing. The generation of turbulence vortices at the exit of the nozzle is responsible for the end of nonuniformity in the Nusselt profile.
format	Article
author	Mohd, Umair Siddiqui Ansari, Emaad Khan, Sher Afghan Gulhane, Nitin Parashram Patil, Rajesh
author_facet	Mohd, Umair Siddiqui Ansari, Emaad Khan, Sher Afghan Gulhane, Nitin Parashram Patil, Rajesh
author_sort	Mohd, Umair Siddiqui
title	Numerical investigation of non-dimensional constant and empirical relation representing Nusselt profile non-uniformity
title_short	Numerical investigation of non-dimensional constant and empirical relation representing Nusselt profile non-uniformity
title_full	Numerical investigation of non-dimensional constant and empirical relation representing Nusselt profile non-uniformity
title_fullStr	Numerical investigation of non-dimensional constant and empirical relation representing Nusselt profile non-uniformity
title_full_unstemmed	Numerical investigation of non-dimensional constant and empirical relation representing Nusselt profile non-uniformity
title_sort	numerical investigation of non-dimensional constant and empirical relation representing nusselt profile non-uniformity
publisher	American Institute of Aeronautics and Astronautics
publishDate	2020
url	http://irep.iium.edu.my/77370/ http://irep.iium.edu.my/77370/ http://irep.iium.edu.my/77370/ http://irep.iium.edu.my/77370/1/77370_Numerical%20Investigation%20of%20Non-dimensional.pdf
first_indexed	2023-09-18T21:49:07Z
last_indexed	2023-09-18T21:49:07Z
_version_	1777413650050449408

Numerical investigation of non-dimensional constant and empirical relation representing Nusselt profile non-uniformity

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