THERMAL SCIENCE

International Scientific Journal

Hicham Doghmi

,

Btissam Abourida

,

Lahoucin Belarche

,

Mohamed Sannad

,

Meriem Ouzaouit

THREE-DIMENSIONAL MIXED CONVECTION HEAT TRANSFER IN A PARTIALLY HEATED VENTILATED CAVITY

ABSTRACT
The 3-D mixed convective heat transfer inside a ventilated cavity partially heated is studied numerically by using control volume method. The heating square portion similar to the integrated electronic devices is placed on the left vertical wall of the enclosure. The right vertical wall is maintained at ambient temperature and all other walls are adiabatic. The results are presented in terms of flow structures, temperature distribution, and global average Nusselt number for various combinations of thermal controlling parameters, namely, the Richardson number (0 ≤ Ri ≤ 10), the Reynolds number (10 ≤ Ri ≤ 200), the heating section dimension (0. ≤ ε ≤ 0.7), and the relative height of the openings B = h/L = 1/8. It is found that for the low Reynolds number the heat transfer process is carried out only by conduction. On the other hand, the highest thermal performance is achieved by reducing the heating section dimension.
KEYWORDS
mixed convection, ventilated cavity, heat transfer, heating surface, three-dimensional, numerical simulation
PAPER SUBMITTED: 2018-04-10
PAPER REVISED: 2018-06-27
PAPER ACCEPTED: 2018-06-28
PUBLISHED ONLINE: 2018-09-30
DOI REFERENCE: https://doi.org/10.2298/TSCI180410193D
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2020, VOLUME 24, ISSUE Issue 3, PAGES [1895 - 1907]
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Three-dimensional mixed convection heat transfer in a partially heated ventilated cavity

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