Forced-convection heat transfer in a spherical annulus heat exchanger

Journal Article · Wed Dec 31 23:00:00 EST 1980 · Am. Soc. Mech. Eng., (Pap.); (United States)

OSTI ID:5313964

Tuft, D B; Brandt, H

Results are presented of a combined numerical and experimental study of steady forced-convection heat transfer in a spherical annulus heat exchanger with 50/degree/C heated water flowing in an annulus formed by an insulated outer sphere and a 0/degree/C cooled inner sphere. In the analytical portion, results of numerical calculations of laminar incompressible fluid flow and heat transfer in a spherical annulus are presented. The full transient axisymmetric Navier-Stokes equations in spherical coordinates are solved by an explicit finite-difference solution technique. Steady solutions are obtained by allowing the transient solution to achieve steady state. In the experimental portion, measurements of inner sphere heat-flux rate distribution, flow separation angle, annulus fluid temperatures, and total heat transfer are made for gap Reynolds numbers from 41 to 1086. 19 refs.

• Research Organization: Lawrence Livermore Lab, Calif, USA
• OSTI ID: 5313964
• Journal Information: Am. Soc. Mech. Eng., (Pap.); (United States), Journal Name: Am. Soc. Mech. Eng., (Pap.); (United States) Vol. 81-WA/HT-8; ISSN ASMSA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420200 -- Engineering-- Facilities
Equipment
& Techniques
420400* -- Engineering-- Heat Transfer & Fluid Flow
ANALYTICAL SOLUTION
CONVECTION
ENERGY TRANSFER
FINITE DIFFERENCE METHOD
FORCED CONVECTION
HEAT EXCHANGERS
HEAT TRANSFER
ITERATIVE METHODS
NUMERICAL SOLUTION
REYNOLDS NUMBER
TRANSIENTS