An Alternative Approach to Evaluate the Average Nusselt Number for Mixed Boundary Layer Conditions in Parallel Flow over an Isothermal Flat Plate

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Abstract

In this paper, we present an alternative approach to evaluate the average Nusselt number for mixed boundary layer conditions in parallel flow over an isothermal flat plate. This approach can be used regardless of the critical Reynolds number where the flow transitions from laminar flow to turbulent flow. This approach is simple and uses graphical visualisation of the physical situation. This should assist comprehension and retention. It utilises the average quantity for the laminar boundary layer and the average value for turbulent boundary layer to obtain the average quantities for mixed boundary layers without the need to perform the usual integration. It can easily be incorporated into part of undergraduate chemical, mechanical and petroleum engineering curricula. A worked example is included to show the utility of the approach.
LanguageEnglish
Pages241-251
Number of pages11
JournalInternational Journal of Mechanical Engineering Education
Volume46
Issue number3
Early online date5 Dec 2017
DOIs
Publication statusPublished - 1 Jul 2018

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Parallel flow
Nusselt number
Boundary layers
Petroleum engineering
visualization
Transition flow
comprehension
Laminar boundary layer
Chemical engineering
Mechanical engineering
engineering
Laminar flow
curriculum
Curricula
Turbulent flow
Reynolds number
Visualization

Cite this

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title = "An Alternative Approach to Evaluate the Average Nusselt Number for Mixed Boundary Layer Conditions in Parallel Flow over an Isothermal Flat Plate",
abstract = "In this paper, we present an alternative approach to evaluate the average Nusselt number for mixed boundary layer conditions in parallel flow over an isothermal flat plate. This approach can be used regardless of the critical Reynolds number where the flow transitions from laminar flow to turbulent flow. This approach is simple and uses graphical visualisation of the physical situation. This should assist comprehension and retention. It utilises the average quantity for the laminar boundary layer and the average value for turbulent boundary layer to obtain the average quantities for mixed boundary layers without the need to perform the usual integration. It can easily be incorporated into part of undergraduate chemical, mechanical and petroleum engineering curricula. A worked example is included to show the utility of the approach.",
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author = "Viacheslav Stetsyuk and Krzysztof Kubiak and Lande Liu and John Chai",
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AU - Liu, Lande

AU - Chai, John

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AB - In this paper, we present an alternative approach to evaluate the average Nusselt number for mixed boundary layer conditions in parallel flow over an isothermal flat plate. This approach can be used regardless of the critical Reynolds number where the flow transitions from laminar flow to turbulent flow. This approach is simple and uses graphical visualisation of the physical situation. This should assist comprehension and retention. It utilises the average quantity for the laminar boundary layer and the average value for turbulent boundary layer to obtain the average quantities for mixed boundary layers without the need to perform the usual integration. It can easily be incorporated into part of undergraduate chemical, mechanical and petroleum engineering curricula. A worked example is included to show the utility of the approach.

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