Heat Transfer in A High Turbulence Air Jet Impinging Over A Flat Circular Disk  

Oleh:

Harris, Kendall T. ; Pillai, M. Ganesa ; Siba, Erick A. ; Haji-Sheikh, A.

Jenis: Article from Bulletin/Magazine
Dalam koleksi: Journal of Heat Transfer vol. 125 no. 2 (Apr. 2003), page 257-265.
Topik: heat transfer; heat transfer; turbulence air jet; impinging; flat circular disk

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: JJ90.6 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

This study concerns the flow and heat transfer characteristics of a turbulent submerged circular air jet impinging on a horizontal flat surface when free stream turbulence exceeds 20 percent. The turbulent fluctuations of the free stream velocity are the primary aerodynamics influencing heat transfer. Two regions with distinct flow characteristics are observed : the stagnation region, and the wall - jet region. According to the linear form of the energy equation, the surface heat flux may be decomposed into laminar and turbulent components. An inverse methodology can determine the turbulent component of the heat transfer coefficient in the stagnation region and in the wall - jet region as a function of the root mean square value of the fluctuating component of velocity in the bulk flow direction.

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