Published 6 issues per year
ISSN Print: 2152-5102
ISSN Online: 2152-5110
Indexed in
Transient Forced Convection due to a Positive Step Change on Thermal Wall Conditions
ABSTRACT
The thermal response of an incompressible laminar boundary layer over a semi-infinite plate due to a positive step change in either the plate temperature or the plate heat flux density is investigated. Some coordinate transformations are obtained with the differential method in the two cases of boundary conditions. Numerical solution of differential equations is obtained by a combination of two types of finite difference schemes. Temperature profiles, thermal boundary-layer thickness and convective heat coefficient are displayed graphically for air flow. Empirical relations for the transient duration as function of Prandtl number are given for the two cases of wall conditions, for Pr ranging from 0.71 to 100.
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Rebay Mourad, Padet Jacques, Kakaç Sadik, Forced convection from a microstructure on a flat plate, Heat and Mass Transfer, 43, 4, 2006. Crossref
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Cossali G.E., Periodic heat transfer by forced laminar boundary layer flow over a semi-infinite flat plate, International Journal of Heat and Mass Transfer, 48, 23-24, 2005. Crossref
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Lachi Mohammed, Rebay Mourad, Mladin Emilia Cerna, Padet Jacques, Alternative models for transient convection heat transfer in external flows over a plate exposed to a variable heat flux, International Journal of Thermal Sciences, 43, 8, 2004. Crossref