Reduced Pumping Power and Wall Temperature in Microchannel Heat Sinks With Fractal-Like Branching Channel Networks

Pence, Deborah V.

doi:10.1080/10893950290098359

Cited by 207 publications

(108 citation statements)

References 8 publications

Supporting

Mentioning

106

Contrasting

Order By: Relevance

“…30,31 Cai 32-34 developed analytical expressions for imbibition process based on fractal characters of porous media and discussed the effect of parameters on imbibition mass and imbibition potential. Pence and Enfield 35,36 computed the pressure and temperature distributions of this fractal-like branching network. The imbibition property of this network system is another interesting area.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Spontaneous Imbibition in Fractal Tree-Like Network System

Shen

et al. 2016

Fractals

View full text Add to dashboard Cite

Spontaneous imbibition in porous media is common in nature, imbibition potential is very important for understanding the imbibition ability, or the ability to keep high imbibition rate for a long time. Structure parameters have influence on imbibition potential. This work investigates the process of spontaneous imbibition of liquid into a fractal tree-like network, taking fractal structure parameters into consideration. The analytical expression for dimensionless imbibition rate with this fractal tree-like network is derived. The influence of structure parameters on imbibition potential is discussed. It is found that optimal diameter ratio β is important for networks to have imbibition potential. Moreover, with liquid imbibed in more sub-branches, some structures of parameter combinations will show the characteristic of imbibition potential gradually. Finally, a parameter plane is made to visualize the percentage of good parameter in all possible combinations and to evaluate the imbibition potential of a specific network system more directly. It is also helpful to design and to optimize a fractal network with good imbibition potential.

show abstract

Section: Introductionmentioning

confidence: 99%

Analysis of Spontaneous Imbibition in Fractal Tree-Like Network System

Shen

et al. 2016

Fractals

View full text Add to dashboard Cite

show abstract

“…They proposed a tree-like flow geometry and a thermodynamic optimization to maximize thermodynamic performance by the minimization of the entropy generated in the assemblies. Pence (2002) analyzed the cooling of a circular heated surface by using a fractal-like branching channel network for pressure drop, flow rate and total pumping power. Lower maximum wall temperature in the fractal-like network was found.…”

Section: Introductionmentioning

confidence: 99%

Thermal and Flow Fields In Single Board Computer Cabin Systems Using CFD Analysis

Guo

et al. 2014

Engineering Applications of Computational Fluid Mechanics

View full text Add to dashboard Cite

A detailed computational fluid dynamics (CFD) analysis of the cooling of a single board computer (SBC) cabin system is performed using the CFD software FLO EFD 9.0. Air-cooling and water-cooling are used for all major heat generating components with the attached heat sinks in it. North bridge chip, SODIMM memory module and south bridge chip are cooled by airflow. A liquid-cooling system with the microchannel heat sink is used to enhance heat transfer from the CPU. The simulation results show that all the heat generating components by this liquid-cooling system can meet their thermal design requirements. 36W CPU with H-shaped fractal-like microchannel heat sink can be maintained below 42°C at the inlet flow rate of 1.0 ml/s and pumping power of 0.06 W. Also it is decreased by 56% relative to forced air-cooling only.

show abstract

“…The interest in tree-shaped flow networks is spreading through different fields. Trees for cooling in electronics were studied by [19,20]. Applications for single-phase flow and two-phase flow have been proposed by [19,21,22].…”

Section: Introductionmentioning

confidence: 99%

An Analytic Approach to Capillary Pressure in Tree-Shaped Networks

Miguel

2008

TOTHERJ

View full text Add to dashboard Cite

This study analyzes the pressure in capillary tree-shaped networks, based on the thermodynamics and the geometric description of the network. The presence of equilibrium and non-equilibrium effects on pressure is accounted. In particular, the presence of equilibrium effects is shown to be essential for describing the pressure in the network. An approach to the definition of equilibrium capillary pressure is presented in terms of interfacial energies of the phases but also in terms of the geometry characteristics of the tree-shaped network. Among other, the equilibrium capillary pressure is shown to depend on number of branching levels and number of daughter branches. Finally, a criterion is established to evaluate the importance of equilibrium and non-equilibrium effects on the capillary pressure.

show abstract

Reduced Pumping Power and Wall Temperature in Microchannel Heat Sinks With Fractal-Like Branching Channel Networks

Cited by 207 publications

References 8 publications

Analysis of Spontaneous Imbibition in Fractal Tree-Like Network System

Analysis of Spontaneous Imbibition in Fractal Tree-Like Network System

Thermal and Flow Fields In Single Board Computer Cabin Systems Using CFD Analysis

An Analytic Approach to Capillary Pressure in Tree-Shaped Networks

Contact Info

Product

Resources

About