Stagnation Region Heat Transfer of Axisymmetric Impinging Jets on Solid Surfaces

A theoretical model is proposed to evaluate the heat transfer characteristics of axisymmetric impinging fluid jets on the horizontal hot surface in the stagnation region using the energy integral method. A generalized expression involving various modeling parameters such as Nusselt number, nozzle‐to...

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Bibliographic Details
Published in:Chemical engineering & technology 2015-12, Vol.38 (12), p.2127-2136
Main Authors: Modak, Mayank, Garg, Krati, Sahu, Santosh K.
Format: Article
Language:English
Subjects:
Axisymmetric
Computational fluid dynamics
Convection heat transfer
Fluid flow
Heat transfer
Hot surfaces
Impinging jets
Integral method
Mathematical models
Reynolds number
Stagnation
Stagnation region heat transfer
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Summary:A theoretical model is proposed to evaluate the heat transfer characteristics of axisymmetric impinging fluid jets on the horizontal hot surface in the stagnation region using the energy integral method. A generalized expression involving various modeling parameters such as Nusselt number, nozzle‐to‐plate distance, Prandtl number, Reynolds number, and the modeling parameter k is obtained from the analysis. Present predictions are found to agree well with the test data involving a wide range of coolant type, Reynolds number, and nozzle‐to‐plate distance. In addition, a mechanistic correlation is suggested between the modeling parameter k and flow parameter, i.e., Reynolds number. Applying the energy integral method, a theoretical model is suggested to evaluate the heat transfer characteristics of axisymmetric impinging fluid jets on the horizontal hot surface in the stagnation region. A generalized expression comprising various modeling parameters is obtained from the analysis. The proposed model exhibits excellent agreement with the test data.
ISSN:0930-7516
1521-4125
DOI:10.1002/ceat.201500070