Catalogo Articoli (Spogli Riviste)
OPAC HELP
Titolo: Transition to oscillatory natural convection of water near its density maximum in a tall enclosure  Assessment of threedimensional effects
Autore: Ho, CJ; Tu, FJ;
 Indirizzi:
 Natl Cheng Kung Univ, Dept Mech Engn, Tainan 70101, Taiwan Natl Cheng KungUniv Tainan Taiwan 70101 Mech Engn, Tainan 70101, Taiwan
 Titolo Testata:
 INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
fascicolo: 7,
volume: 11,
anno: 2001,
pagine: 626  641
 SICI:
 09615539(2001)11:7<626:TTONCO>2.0.ZU;2Y
 Fonte:
 ISI
 Lingua:
 ENG
 Soggetto:
 VERTICAL ENCLOSURE; RECTANGULAR CAVITY; RAYLEIGH NUMBERS; HEATTRANSFER; EXTREMUM; FLOW;
 Keywords:
 convection; simulation; water;
 Tipo documento:
 Article
 Natura:
 Periodico
 Settore Disciplinare:
 Engineering, Computing & Technology
 Citazioni:
 18
 Recensione:
 Indirizzi per estratti:
 Indirizzo: Ho, CJ Natl Cheng Kung Univ, Dept Mech Engn, Tainan 70101, Taiwan Natl Cheng Kung Univ Tainan Taiwan 70101 gn, Tainan 70101, Taiwan



 Citazione:
 C.J. Ho e F.J. Tu, "Transition to oscillatory natural convection of water near its density maximum in a tall enclosure  Assessment of threedimensional effects", INT J N M H, 11(7), 2001, pp. 626641
Abstract
Numerical simulations have been Performed for threedimensional natural convection of water near its maximumdensity (cold water) inside rectangular enclosures with differential heating at the vertical (left and right) walls. The horizontal (top and bottom) walls and the lateral (front and rear) wags are taken as insulated Computations are performed for the buoyancydriven convection of cold water with density inversion parameter theta (m) = 0.5in the enclosures with aspect ratio (height/width) A(y) = 8 and depth ratios (depth/width) A(z) = 0.5, 1, and 2. The influence of the death ratio on the onset of oscillatory convection in a coldwaterfilled enclosure is investigated. The presence of the lateral walls tends to suppress the onset ofunsteadiness in the convective flow. The main features of the oscillatory convection flow and temperature fields as well as the instability mechanismin the threedimensional enclosure were similar to those found in the twodimensional model. However, there exists a strong threedimensionality in the spatial distribution of the fluctuation amplitude. With the decrease of the depth ratio, the damping effect of the lateral walls becomes increasingly Pronounced, leading to a reduced heat transfer rate.
ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/07/20 alle ore 17:32:34