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Authors
Affiliations
1 Department of Mechanical Engineering, Al Azhar College of Engineering & Technology
Perumpillichira, Thodupuzha, Idukki - 685605, Kerala, IN
2 Department of Mechanical Engineering, Noorul Islam Centre for Higher Education,
Kumaracoil - 629180, Thuckalay, Kanyakumari District, Tamilnadu, IN
Source
Indian Journal of Science and Technology, Vol 9, No 13 (2016), Pagination:
Abstract
Background/Objectives: The main objective is to study the variation of Nusselt number for various distances (Z/D) between nozzle exit and plate. Methods/Statistical Analysis: Current work experimentally examines the heat transfer on a heated plate impinged with cold air jet. Stainless steel plate material measures the dimensions 150mm × 150mm × 0.5mm and is electrically heated uniformly. Copper tube pipe is utilized as circular nozzle (6 mm and 10 mm) and aluminum material square pipe utilized as a square nozzle to move the jet flow out at numerous Re Numbers. Findings: The cold jets having Reynolds number (10066.20, 20056.63, 30070.03, 40020.26, 50026.93, and 60061.79) is utilized for impinging on the plate. Nu Number variation over the plate was analyzed for various plates to nozzle distances (Z/D). It is observed Nu Number rises against rise in Re Numbers for all distances (Z/D). Applications/Improvements: It is concluded that the Nusselt number increases with increasing in Reynolds numbers for all distances (Z/D) between nozzle exit and plate at radial direction.
Keywords
Heat Transfer, Jet Impingement, Nu Number, Reynolds Number
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