Mixed turbulent convective heat transfer in vertical ducts
Thesis/Dissertation
·
OSTI ID:7199337
Time-averaged and dynamic heat-transfer phenomena associated with opposing mixed turbulent convection in vertical ducts were studied both experimentally and theoretically. Surface renewal theory and experimental data were used to obtain a time-averaged heat-transfer correlation containing the proper parameter functionality. Results indicate that although many different flow structures and flow sequences existed at the various parameter settings, the most predominant flow structure was a large single cell. All of the power spectral densities computed form the time series display broad-band noise with the average power decreasing with increasing frequency. No bifurcation sequences characterizing a large-scale transition mechanism could be established.
- Research Organization:
- California Univ., Los Angeles (USA)
- OSTI ID:
- 7199337
- Country of Publication:
- United States
- Language:
- English
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