Numerical Study of Mixed Convection in a Cooled Room  

Oleh:

Noor, Dedy Zulhidayat ; Mirmanto, Heru ; Widiyono, Eddy ; Rusdiyana, Liza

Jenis: Article from Journal - ilmiah nasional - terakreditasi DIKTI
Dalam koleksi: IPTEK: The Journal for Technology and Science vol. 26 no. 1 (Apr. 2015), page 1-4.
Topik: numerical method; mixed convection; cooled room; heat transfer
Fulltext: 1-4_her.pdf (418.53KB)

Isi artikel

The present work is carried out to study laminar mixed convection heat transfer inside a rectangular cooled room numerically. The chosen model is considered as a representation of a room facing the sun with a floor releasing heat resulted by electronic components or human activities. The Reynolds number and Richardson number are varied from 100 to 400 and 0 to 3, respectively, in order to cover laminar mixed convection phenomena. For the considered range of Re dan Ri, the flow regimes fall into three modes i.e. a simple flow without circulation zone, the two circulation zones between the main stream and a single big circulation zones near the hot walls. The higher Nusselt numbers are found at the higher values of Re, on the other hand, the forced convection leads to higher heat transfer rate than the free/natural convection.

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