Local Heat Transfer in A Rotating Square Channel With Jet Impingement  

Oleh:

S.-S. Hsieh ; J.-T. Huang ; C.-F. Liu

Jenis: Article from Bulletin/Magazine
Dalam koleksi: Journal of Heat Transfer vol. 121 no. 4 (Nov. 1999), page 811-818.
Topik: rotating; local heat transfer; rotating square; channel; jet impingement

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: JJ90.1 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

Lihat Detail Induk

Isi artikel

The influence of rotation and jet mass flow rate on the local heat transfer coefficient for a single confined impinging round jet with a fixed jet - to - wall spacing of H / d = 5 was studied for the jet Reynolds number from 6500 to 26,000 and the rotational Reynolds number from 0 to 112,000. The local heat transfer coefficient along the surface is measured and the effect of the rotation on the stagnation (peak) point, local and average Nusselt number, is presented and discussed. Furthermore, a correlation was developed for the average Nusselt number in terms of the parameters of Re(j) and Re(a). In general, the combined jet impingement and rotation effect are shown to affect the heat transfer response. Rotation decreases the average Nusselt number values from 15 to 25 percent in outward and inward radial flow, respectively. Finally, comparisons of the present data with existing results for multijets with rotation were also made.

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