Flow behavior and heat transfer characteristics in Rayleigh-Bénard laminar convection with fluid-particle interaction

Chen，Mufeng1; Niu，Xiaodong2; Yu，Peng3,4; Yamasaki，Haruhiko5; Yamaguchi，Hiroshi6

2020

10.1016/j.ijheatmasstransfer.2019.118840

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER   影响因子和分区

0017-9310

1879-2189

The present study experimentally and numerically investigates the Rayleigh-Bénard (R-B) laminar convection of a Newtonian fluid in a square cavity heated from the bottom wall at the initial conditions of constant temperature field and stationary flow field over the range of Rayleigh number Ra ≤ 4 × 10. The effect of a freely-moving particle in the cavity on the flow pattern and heat transfer characteristics is discussed. When the stable multi-stability patterns coexist, i.e. Ra is beyond a certain critical value, the final flow pattern can be manipulated by adjusting the initial position of the particle. The bicellular mode is established if the particle is located at the bottom center of the cavity while the unicellular mode is established if the particle is away from the center. The present results demonstrate that at the same Ra, the thermal performance is mainly determined by the flow pattern but not the presence of a particle. However, one can control the final flow pattern for R-B convection by adjusting the initial position of the particle, which consequently determines the thermal performance.

Bifurcation Fluid-particle interaction Heat transfer Rayleigh-Bénard convection Transition process

SCI ; EI

英语

其他

National Outstanding Youth Science Fund Project of National Natural Science Foundation of China[11902135] ; Japan Society for the Promotion of Science[26420126] ; Fundamental Research Funds for the Central Universities[ZDSYS201802081843517] ; [LB2018036] ; National Natural Science Foundation of China[11772179]

Thermodynamics ; Engineering ; Mechanics

Thermodynamics ; Engineering, Mechanical ; Mechanics

WOS:000500371700058

Elsevier Ltd

20194307570748

Bifurcation (mathematics) ; Flow fields ; Flow patterns ; Heat transfer ; Newtonian liquids ; Particle interactions

Fluid Flow, General:631.1 ; Heat Transfer:641.2 ; Physical Properties of Gases, Liquids and Solids:931.2 ; Atomic and Molecular Physics:931.3

ENGINEERING

2-s2.0-85073624280

Scopus

1.College of Physics and Electromechanic EngineeringLongyan University,Longyan,364012,China
2.College of EngineeringShantou University,Shantou,515063,China
3.Shenzhen Key Laboratory of Complex Aerospace FlowsDepartment of Mechanics and Aerospace EngineeringSouthern University of Science and Technology,Shenzhen,518055,China
4.Center for Complex Flows and Soft Matter ResearchSouthern University of Science and Technology,Shenzhen,518055,China
5.Osaka Prefecture University,Sakai City,1-1 Gakuen-cho, Naka-ku,599-8531,Japan
6.Energy Conversion Research CenterDoshisha University,Kyoto,630-0321,Japan

Chen，Mufeng,Niu，Xiaodong,Yu，Peng,et al. Flow behavior and heat transfer characteristics in Rayleigh-Bénard laminar convection with fluid-particle interaction[J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,2020,146.

Chen，Mufeng,Niu，Xiaodong,Yu，Peng,Yamasaki，Haruhiko,&Yamaguchi，Hiroshi.(2020).Flow behavior and heat transfer characteristics in Rayleigh-Bénard laminar convection with fluid-particle interaction.INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,146.

Chen，Mufeng,et al."Flow behavior and heat transfer characteristics in Rayleigh-Bénard laminar convection with fluid-particle interaction".INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER 146(2020).