On The Calculation of Length Scales for Turbulent Heat Transfer Correlation  

Oleh:

Hollingsworth, D. Keith ; Barrett, Michael J.

Jenis: Article from Bulletin/Magazine
Dalam koleksi: Journal of Heat Transfer vol. 123 no. 5 (Oct. 2001), page 878-883.
Topik: heat transfer; calculation; length scales; turbulent heat transfer; correlation

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: JJ90.2 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

Turbulence length scale calculation methods were critically reviewed for their usefulness in boundary layer heat transfer correlations. Using the variance of the streamwise velocity and the dissipation spectrum, a rigorous method for calculating an energy - based integral scale was introduced. A principal advantage of the new method is the capability to calculate length scales in a low - Reynolds - number turbulent boundary layer. The method was validated with data from grid - generated, free - shear - layer, and wall - bounded turbulence. Length scales were calculated in turbulent boundary layers with momentum thickness Reynolds numbers from 400 to 2100 and in flows with turbulent Reynolds numbers as low as 90.

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