ON THE TRANSFER OF HEAT TO FLUIDS FLOWING THROUGH PIPES, ANNULI, AND PARALLEL PLATES

Technical Report · Tue Jan 01 04:00:00 EST 1963

DOI:https://doi.org/10.2172/4633263· OSTI ID:4633263

Dwyer, O. E.

Nusselt numbers were calculated for heat transfer to fluids flowing through annuli under conditions of uniform heat flux and fully established velocity and temperature profiles. The following cases were considered: (a) laminar flow, (b) slug flow, (c) turbulent flow with molecular conduction only, and (d) turbulent flow with both molecular and eddy conduction. These Nusselt numbers were determined for two conditions: heat transfer from the inner wall only and heat transfer from the outer wall only. The results were correlated by semi-empirical equations. The final results obtained on cases (a), (b), amd (c) are applicable to any fluid, whereas those obtained on (d) are for liquid metals only. Wall- and bulk-temperature relationships for the above four cases were also determined. These relationships were treated as dimensionless temperature ratios. Both the Nusselt numbers ad temperature ratios were evaluated over the r/ sub 1//r/sub 2/ range, zero to unity; the former being the case of the circular pipe, and the later, the case of infinite parallel plates. (auth)

• Research Organization: Brookhaven National Lab., Upton, N.Y.
• DOE Contract Number: AT(30-2)-GEN-16
• NSA Number: NSA-17-039236
• OSTI ID: 4633263
• Report Number(s): BNL-6692
• Country of Publication: United States
• Language: English

Related Subjects

DISTRIBUTION
ENGINEERING AND EQUIPMENT
EQUATIONS
FLUID FLOW
HEAT TRANSFER
HEATING
LIQUID METALS
MATHEMATICS
NUSSELT NUMBER
PIPES
QUANTITATIVE ANALYSIS
SLUG FLOW
SPACERS
SURFACES
TEMPERATURE
THERMAL DIFFUSION
TUBES
TURBULENCE
VELOCITY