Abstract
In the present experimental study, the stability of Rayleigh-Bénard convection has been investigated in rectangular enclosures filled with microemulsion Phase-Change-Material (PCM) slurry. The PCM slurry exhibited a pseudoplastic non-Newtonian fluid behavior. Hysteresis in convection was clearly observed while the PCM were in a solid phase and in phase changing. The critical Rayleigh number decreases with the PCM mass concentration while the PCM is in phase changing. The fluid temperature at the center of the enclosure showed a time-dependent oscillation during the transition from a heat conduction state to a convection state. The maximum Nusselt number has been observed for all of the slurries while the heating plate was controlled at a temperature that most of PCM was in phase changing.
| Original language | English |
|---|---|
| Pages (from-to) | 126-137 |
| Number of pages | 12 |
| Journal | JSME International Journal, Series B: Fluids and Thermal Engineering |
| Volume | 47 |
| Issue number | 1 |
| Publication status | Published - Feb 2004 |
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Keywords
- Convective instability
- Hysteresis
- Microemulsion
- Phase Change Material
- Rayleigh-Bénard convection
- Subcritical convection
ASJC Scopus subject areas
- Mechanical Engineering
- Physical and Theoretical Chemistry
- Fluid Flow and Transfer Processes
Cite this
The convective instability in a microemulsion Phase-Change-Material slurry layer. / Inaba, Hideo; Dai, Chuanshan; Horibe, Akihiko.
In: JSME International Journal, Series B: Fluids and Thermal Engineering, Vol. 47, No. 1, 02.2004, p. 126-137.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - The convective instability in a microemulsion Phase-Change-Material slurry layer
AU - Inaba, Hideo
AU - Dai, Chuanshan
AU - Horibe, Akihiko
PY - 2004/2
Y1 - 2004/2
N2 - In the present experimental study, the stability of Rayleigh-Bénard convection has been investigated in rectangular enclosures filled with microemulsion Phase-Change-Material (PCM) slurry. The PCM slurry exhibited a pseudoplastic non-Newtonian fluid behavior. Hysteresis in convection was clearly observed while the PCM were in a solid phase and in phase changing. The critical Rayleigh number decreases with the PCM mass concentration while the PCM is in phase changing. The fluid temperature at the center of the enclosure showed a time-dependent oscillation during the transition from a heat conduction state to a convection state. The maximum Nusselt number has been observed for all of the slurries while the heating plate was controlled at a temperature that most of PCM was in phase changing.
AB - In the present experimental study, the stability of Rayleigh-Bénard convection has been investigated in rectangular enclosures filled with microemulsion Phase-Change-Material (PCM) slurry. The PCM slurry exhibited a pseudoplastic non-Newtonian fluid behavior. Hysteresis in convection was clearly observed while the PCM were in a solid phase and in phase changing. The critical Rayleigh number decreases with the PCM mass concentration while the PCM is in phase changing. The fluid temperature at the center of the enclosure showed a time-dependent oscillation during the transition from a heat conduction state to a convection state. The maximum Nusselt number has been observed for all of the slurries while the heating plate was controlled at a temperature that most of PCM was in phase changing.
KW - Convective instability
KW - Hysteresis
KW - Microemulsion
KW - Phase Change Material
KW - Rayleigh-Bénard convection
KW - Subcritical convection
UR - http://www.scopus.com/inward/record.url?scp=1842790486&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=1842790486&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:1842790486
VL - 47
SP - 126
EP - 137
JO - JSME International Journal, Series B: Fluids and Thermal Engineering
JF - JSME International Journal, Series B: Fluids and Thermal Engineering
SN - 1340-8054
IS - 1
ER -