Numerical investigation of mathematical non-dimensional constant representing smoothness in the Nusselt profile

Ansari, Emad and Siddiqui, M. Umair and Khan, Sher Afghan and Akhtar, Mohammad Nishat and Ilmi, Abu Bakar (2020) Numerical investigation of mathematical non-dimensional constant representing smoothness in the Nusselt profile. CFD Letters, 12 (6). pp. 16-27. ISSN 2180-1363

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Abstract

Cooling of devices using air-jet and other fluid impingement has acquired pace in the manufacturing and electronic device industries. The cooling of the surface using liquid jets is studied using the Nusselt distribution profile. The pattern of the Nusselt profile becomes non-uniform when some parameters are wrongly selected. This may lead to heating of some locations instead of cooling of the surface. Thus research for keeping the Nusselt profile uniform is a primary task. The Nusselt profile depends mainly on the Reynolds number (Re) and nozzle-target spacing (Z/d). Therefore, the current study numerically evaluates the value of constant, which is a ratio of Reynolds number and nozzle-target spacing (C = Re/ (Z/d)) up to which the Nusselt profile remains uniform. The value of constant C is found to be 7400. Also, the present work uses a computational model for study, which is validated using grid independence test and turbulence modeling.

Item Type:	Article (Journal)
Additional Information:	7395/81245
Uncontrolled Keywords:	Nusselt profile ; nozzle-target spacing
Subjects:	T Technology > TL Motor vehicles. Aeronautics. Astronautics T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL780 Rockets T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL787 Astronautics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Mechanical Engineering
Depositing User:	Prof. Dr. Sher Afghan Khan
Date Deposited:	03 Jul 2020 15:18
Last Modified:	08 Dec 2020 16:43
URI:	http://irep.iium.edu.my/id/eprint/81245

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