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Titolo:
Visualization and PTV study of natural convection in particle suspensions (simultaneous measurements of velocity, temperature and interface between particle-free fluid and suspension
Autore:
Mikami, F; Chen, B; Nishikawa, N;
Indirizzi:
Chiba Univ, Fac Engn, Inage Ku, Chiba 2638522, Japan Chiba Univ Chiba Japan 2638522 Fac Engn, Inage Ku, Chiba 2638522, Japan Chiba Univ, Grad Sch Sci & Technol, Inage Ku, Chiba 2638522, Japan Chiba Univ Chiba Japan 2638522 & Technol, Inage Ku, Chiba 2638522, Japan
Titolo Testata:
JSME INTERNATIONAL JOURNAL SERIES B-FLUIDS AND THERMAL ENGINEERING
fascicolo: 1, volume: 44, anno: 2001,
pagine: 30 - 37
SICI:
1340-8054(200102)44:1<30:VAPSON>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
DIFFERENTIAL SEDIMENTATION; DRIVEN;
Keywords:
natural convection; flow visualization; digital image processing; laser induced fluorescence; suspension; particle tracking velocimetry; double diffusive convection; refractive index matching;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
10
Recensione:
Indirizzi per estratti:
Indirizzo: Mikami, F Chiba Univ, Fac Engn, Inage Ku, 1-33 Yayoi Cho, Chiba 2638522, Japan Chiba Univ 1-33 Yayoi Cho Chiba Japan 2638522 ba 2638522, Japan
Citazione:
F. Mikami et al., "Visualization and PTV study of natural convection in particle suspensions (simultaneous measurements of velocity, temperature and interface between particle-free fluid and suspension", JSME I J B, 44(1), 2001, pp. 30-37

Abstract

Natural convection in a suspension was studied experimentally using both refractive index matching and laser induced fluorescence (LIF) techniques. Arectangular test section was tilled with particle suspension and was heated from a horizontal bottom, and two facing vertical walls were kept at a constant temperature. The images of the fluorescent particles were captured by a CCD camera through a sharp cut filter which separates emitted fluorescence from scattered excitation light. The flow velocity fields were analyzedquantitatively using Particle Tracking Velocimetry (PTV), Interface between particle-free fluid and suspension as well as temperature fields was visualized simultaneously with the velocity fields, It was suggested that two-layer convection cells were driven by both heating and sedimentation of particles which drives convection in the overlying layer due to the release of the heated clear fluid at the interface.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 21/10/20 alle ore 09:58:52