Direct numerical simulation of three-dimensional flow and augmented heat transfer in a grooved channel
Book
·
OSTI ID:419634
- Univ. of Nevada, Reno, NV (United States). Mechanical Engineering Dept.
- Brown Univ., Providence, RI (United States). Div. of Applied Mathematics
Direct numerical simulations of three-dimensional destabilized 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 is increased, 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 quantifies its heat transfer to within 20% of measured values. Two-dimensional simulations, however, incorrectly predict laminar-like friction factor and heat transfer behaviors.
- Sponsoring Organization:
- National Science Foundation, Washington, DC (United States)
- OSTI ID:
- 419634
- Report Number(s):
- CONF-960815--; ISBN 0-7918-1512-9
- Country of Publication:
- United States
- Language:
- English
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