PROGRESS REPORT FOR RESEARCH ON HEAT TRANSFER TO FLUIDS FLOWING THROUGH NON- CIRCULAR CHANNELS. Period covered: March 1961 to June 1961

Technical Report · Tue Oct 31 04:00:00 EST 1961

OSTI ID:4041085

Eckert, E R.G.; Novotny, J L

Experimental turbulent heat transfer studies were conducted in rectangular ducts with the boundary conditions of two heated and two unheated walls for an aspect ratio of 1: 1 and Reynolds numbers of 10,000 to 100,000. The ducts have a thermal bcundary condition of two vertical walls approximating an adiabatic boundary and two horizontal walls that approximate a constant heat flux boundary. The results are illustrated graphically as: centerline temperature for constant heat-flux walls; the heat transfer coefficient averaged in the circumferential direction over the heated walls as a function of the axial dimensionless distance; the fully developed Nusselt number based on the experimental heat transfer coefficient, the hydraulic diameter, and the thermal conductivity calculated from the average bulk as a function of the average Reynolds number for the duct. (B.O.G.)

• Research Organization: Minnesota. Univ., Minneapolis . Heat Transfer Lab.
• NSA Number: NSA-15-022428
• OSTI ID: 4041085
• Report Number(s): TID-12983
• Country of Publication: United States
• Language: English

Related Subjects

CONFIGURATION
DIAGRAMS
ENGINEERING AND EQUIPMENT
FLUID FLOW
FLUIDS
HEAT TRANSFER
HEATING
HYDRAULICS
NUSSELT NUMBER
PERFORMANCE
PIPES
REYNOLDS NUMBER
SOLIDS
SURFACES
TEMPERATURE
THERMAL CONDUCTIVITY
THERMODYNAMICS
TURBULENCE