Direct numerical simulation of three-dimensional flow and augmented heat transfer in a grooved channel
- Univ. of Nevada, Reno, NV (United States). Mechanical Engineering Dept.
- Brown Univ., Providence, RI (United States). Div. of Applied Mechanics
Industrial heat transfer equipment employs a wide variety of augmented core configurations to enhance performance. Here, direct numerical simulations of three-dimensional flow and augmented convective heat transfer in a transversely grooved channel are presented for the Reynolds number range 140 < Re < 2,000. These calculations employ the spectral element technique. Multiple flow transitions are documented as the Reynolds number increases, from steady two-dimensional flow through broad-banded unsteady three-dimensional mixing. Three-dimensional simulations correctly predict the Reynolds-number-independent friction factor behavior of this flow and quantify its heat transfer to within 16% of measured values. Two-dimensional simulations, however, incorrectly predict laminar-like friction factor and heat transfer behaviors.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 665329
- Journal Information:
- Journal of Heat Transfer, Journal Name: Journal of Heat Transfer Journal Issue: 3 Vol. 120; ISSN 0022-1481; ISSN JHTRAO
- Country of Publication:
- United States
- Language:
- English
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