Heat transfer of laminar mist flow in concentric annuli
- Hawaii Univ., Honolulu, HI (USA). Dept. of Mechanical Engineering
Heat transfer of single-phase flow or mist flow in confined spaces has important application in industrial heat exchangers and nuclear reactors. Extensive research has been conducted for single-phase flow in concentric tubes and eccentric annuli, and an excellent review can be found. However, very few analyses have been devoted to the heat transfer of mist flow in confined spaces due to the complexities of the geometries and phenomena. Numerical results are presented for convective heat transfer of a laminar mist flow in the thermal entrance region of a concentric annulus with a heated core and an insulated outer wall. Both constant temperature and constant heat flux on the inner wall are considered. The saturated droplets in the mist flow are considered as equivalent heat sinks distributed in the superheat vapor velocity, droplet number density, and the local Nusselt number in the streamwise direction until the single-phase fully developed condition is reached. The effects of different governing parameters on heat transfer characteristics are studied.
- OSTI ID:
- 6517540
- Journal Information:
- Numerical Heat Transfer, Part A: Applications; (USA), Journal Name: Numerical Heat Transfer, Part A: Applications; (USA) Vol. 18:2; ISSN 1040-7782; ISSN NHAAE
- Country of Publication:
- United States
- Language:
- English
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COOLING SYSTEMS
DROPLETS
ENERGY SYSTEMS
ENERGY TRANSFER
FLUID FLOW
GEOMETRY
HEAT EXCHANGERS
HEAT TRANSFER
HEATING
LAMINAR FLOW
MATHEMATICS
NUCLEAR FACILITIES
NUCLEAR POWER PLANTS
NUCLEAR SUPERHEATING
NUSSELT NUMBER
PARTICLES
POWER PLANTS
POWER REACTORS
REACTOR COMPONENTS
REACTOR COOLING SYSTEMS
REACTORS
SUPERHEATING
THERMAL POWER PLANTS
TUBES
WALLS