The convective instability in a microemulsion Phase-Change-Material slurry layer

Hideo Inaba, Chuanshan Dai, Akihiko Horibe

Research output: Contribution to journalArticle

5 Citations (Scopus)

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 languageEnglish
Pages (from-to)126-137
Number of pages12
JournalJSME International Journal, Series B: Fluids and Thermal Engineering
Volume47
Issue number1
Publication statusPublished - Feb 2004

Fingerprint

phase change materials
Phase change materials
Microemulsions
convection
enclosure
Enclosures
slurries
Fluids
fluids
Slurries
Rayleigh number
Nusselt number
Heat conduction
conductive heat transfer
Hysteresis
solid phases
hysteresis
Heating
Temperature
oscillations

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 journalArticle

@article{dacba7f7109f4d509ab8a6bc7cbe5c05,
title = "The convective instability in a microemulsion Phase-Change-Material slurry layer",
abstract = "In the present experimental study, the stability of Rayleigh-B{\'e}nard 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.",
keywords = "Convective instability, Hysteresis, Microemulsion, Phase Change Material, Rayleigh-B{\'e}nard convection, Subcritical convection",
author = "Hideo Inaba and Chuanshan Dai and Akihiko Horibe",
year = "2004",
month = "2",
language = "English",
volume = "47",
pages = "126--137",
journal = "JSME International Journal, Series B: Fluids and Thermal Engineering",
issn = "1340-8054",
publisher = "Japan Society of Mechanical Engineers",
number = "1",

}

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 -