Transient Cooling Of A Cylinder In Cross Flow Bounded By An Adiabatic Wall

https://doi.org/10.22146/ajche.49552

Nawaf H Saeid(1*), Bashir S. Abusahmin(2)

(1) Mechanical Engineering Programme, Universiti Teknologi Brunei, Tungku Link, Gadong, BE 1410, Brunei Darussalam
(2) Mechanical Engineering Programme, Universiti Teknologi Brunei, Tungku Link, Gadong, BE 1410, Brunei Darussalam
(*) Corresponding Author

Abstract


The present study investigates the parameters controlling the cooling process of a
cylindrical food in the storage area for a period of time. Transient analysis of the
conduction and convection (conjugate) heat transfer from a cylindrical food, or a
cylindrical can filled with food is selected for numerical simulations. The cylinder is
bounded by an adiabatic wall and the cold air is flowing normal to the cylinder axis (cross
flow). The parameters investigated are: Reynolds number, food thermal properties
(density, specific heat and thermal conductivity) and the cooling period. The range of the
Reynolds number is selected from 50 to 500 to be in laminar flow conditions. Three
different materials were selected according their thermal properties. The results are
presented to show the cooling process starting from blowing cold air stream on the
cylinder for a period of 4 hours. The results show that the food with low thermal inertia is
cooled faster than that of high thermal inertia. The present results show also that the
cooling process can be shortened by increasing the air velocity and lower its temperature.


Keywords


Computational fluid dynamics, Transient analysis, Conjugate heat transfer, Circular cylindrical, Cross flow, Thermal inertia.

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DOI: https://doi.org/10.22146/ajche.49552

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ASEAN Journal of Chemical Engineering  (print ISSN 1655-4418; online ISSN 2655-5409) is published by Chemical Engineering Department, Faculty of Engineering, Universitas Gadjah Mada.