TY - JOUR

T1 - Nusselt numbers in a rectangular channel with heating on the floor only

AU - Keyhani, V.

AU - Christensen, R. N.

AU - Kulacki, F. A.

PY - 1988/12/1

Y1 - 1988/12/1

N2 - Using subsurface excavations mine drifts as nuclear waste repositories creates a need for knowledge concerning flow transition along the drift and determination of heat transfer coefficients at the surface of the waste respository drift. A typical respository mine drift was modeled by a rectangular channel with variable aspect ratio in which the airflow and heated length in the bottom wall varied independently. Data are presented which qualitatively described the thermal and hydraulic behavior in the entrance region in a rectangular channel. The fully developed total Nusselt number was found to be independent of the Grashof number for the Reynolds range from 44,000 to 150,000. Thus, pure forced convection occurs in the experimental duct. Correlations for the fully developed total Nusselt number for the channel are presented and are functions of the Reynolds number. The average total Nusselt number for the entrance section of the channel is a function of the Reynolds number and heated length.

AB - Using subsurface excavations mine drifts as nuclear waste repositories creates a need for knowledge concerning flow transition along the drift and determination of heat transfer coefficients at the surface of the waste respository drift. A typical respository mine drift was modeled by a rectangular channel with variable aspect ratio in which the airflow and heated length in the bottom wall varied independently. Data are presented which qualitatively described the thermal and hydraulic behavior in the entrance region in a rectangular channel. The fully developed total Nusselt number was found to be independent of the Grashof number for the Reynolds range from 44,000 to 150,000. Thus, pure forced convection occurs in the experimental duct. Correlations for the fully developed total Nusselt number for the channel are presented and are functions of the Reynolds number. The average total Nusselt number for the entrance section of the channel is a function of the Reynolds number and heated length.

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M3 - Conference article

AN - SCOPUS:0024137049

VL - 96

SP - 155

EP - 167

JO - American Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD

JF - American Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD

SN - 0272-5673

T2 - ASME Proceedings of the 1988 National Heat Transfer Conference

Y2 - 24 July 1988 through 27 July 1988

ER -