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Titolo:
Turbulent transition mechanisms of natural convection over upward-facing horizontal plates
Autore:
Kitamura, K; Chen, XA; Kimura, F;
Indirizzi:
Toyohashi Univ Technol, Dept Mech Engn, Toyohashi, Aichi 4418580, Japan Toyohashi Univ Technol Toyohashi Aichi Japan 4418580 Aichi 4418580, Japan Himeji Inst Technol, Fac Engn, Himeji, Hyogo 6712201, Japan Himeji Inst Technol Himeji Hyogo Japan 6712201 meji, Hyogo 6712201, Japan
Titolo Testata:
JSME INTERNATIONAL JOURNAL SERIES B-FLUIDS AND THERMAL ENGINEERING
fascicolo: 1, volume: 44, anno: 2001,
pagine: 90 - 98
SICI:
1340-8054(200102)44:1<90:TTMONC>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
HEAT-TRANSFER; FLUID-FLOW;
Keywords:
heat transfer; natural convection; transition to turbulence; visualization; longitudinal vortices; three-dimensional analysis; horizontal plate;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
10
Recensione:
Indirizzi per estratti:
Indirizzo: Kitamura, K Toyohashi Univ Technol, Dept Mech Engn, 1-1 Hibarigaoka, Toyohashi, Aichi 4418580, Japan Toyohashi Univ Technol 1-1 Hibarigaoka ToyohashiAichi Japan 4418580
Citazione:
K. Kitamura et al., "Turbulent transition mechanisms of natural convection over upward-facing horizontal plates", JSME I J B, 44(1), 2001, pp. 90-98

Abstract

Turbulent transition mechanisms and heat transfer characteristics of the natural convection over heated, horizontal plate were investigated both experimentally and analytically. An unsteady, 3-D numerical analysis has been performed on the water flow over 150 mm-wide plate heated with constant heatflux. The analytical results showed that longitudinal vortices play a crucial role on the turbulent transition over the plate. The vortices appear first in the laminar boundary layer at certain distance from the leading edge. Then, they detach from the plate and become distorted toward downstream, Meanwhile, the flow and temperature fields over the plate were visualized experimentally. The results confirmed that the above transition actually occurs over the plate. Moreover, the local heat transfer coefficients predicted by the analysis coincide well with those measured by the experiments.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 22/01/20 alle ore 13:13:55