Abstract
Natural convective heat transfer from relatively short isothermal cylinders that have a square cross-sectional shape and that have an exposed top surface is considered. The cylinders are mounted on a plane adiabatic base. Attention is first given to a numerical study of the case where the cylinder is vertical. Numerical and experimental studies of the case where the cylinder is inclined at an angle to the vertical are then discussed and good agreement between the numerical and experimental results is shown to be obtained. The numerically determined heat transfer rates from the side surfaces and the top surface of the cylinder are compared with the heat transfer rate from the entire cylinder. A simple approximate method that can be used to develop an empirical equation for the heat transfer rate from the cylinder is then discussed. Lastly attention is given to the effect of having a uniform heat flux instead of a uniform temperature over the surface of the cylinder.
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References
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Oosthuizen, P., Kalendar, A. (2014). Natural Convective Heat Transfer From Short Square Cylinders Having Exposed Upper Surfaces and Mounted on Flat Adiabatic Bases. In: Natural Convective Heat Transfer from Short Inclined Cylinders. SpringerBriefs in Applied Sciences and Technology(). Springer, Cham. https://doi.org/10.1007/978-3-319-02459-2_3
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DOI: https://doi.org/10.1007/978-3-319-02459-2_3
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