High heat flux heat pipe mechanism for cooling of electronics

Zuo, Zhijun; North, Mark T.; Wert, K.L.

doi:10.1109/6144.926386

Cited by 105 publications

(30 citation statements)

References 7 publications

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“…[14][15]) which assumes pressure oscillations as fundamental to induce vapor-liquid circulation; the mass-spring-dampers approach applied to describe the motion of the liquid slug and vapor plugs as a train of linearized elements (e.g. [16][17]). Wong et al [18] developed the first numerical model describing an adiabatic slug flow in a capillary channel with a set of first order non linear differential equations.…”

Section: Introductionmentioning

confidence: 99%

Non equilibrium lumped parameter model for Pulsating Heat Pipes: validation in normal and hyper-gravity conditions

Manzoni

Mameli

Falco

et al. 2016

International Journal of Heat and Mass Transfer

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Section: Introductionmentioning

confidence: 99%

Non equilibrium lumped parameter model for Pulsating Heat Pipes: validation in normal and hyper-gravity conditions

Manzoni

Mameli

Falco

et al. 2016

International Journal of Heat and Mass Transfer

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“…Only a few researches paid attention to the numerical simulations. Zuo (Zuo et al, 2001) simulated the operation of vapor and liquid slugs in OHP by the single spring-mass-damper system, which was far away from the experimental results. Wong (Wong et al, 1999) predicted the direction of vapor and liquid slugs by the multiple spring-mass-damper system, but without considering the effect of heat exchange.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation on Flow and Heat Transfer in Oscillating Heat Pipes

Wang¹,

Lin²,

Lee³

et al. 2012

Frontiers in Heat Pipes

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In order to predict the heat transport capability of oscillating heat pipes (OHPs), a mathematical and physical model of OHP was built to simulate the process of flow and heat transfer in vertical bottom heating mode. Water was used as working fluid. Mixture model in FLUENT was used for twophase flow numerical simulation. The result showed that the numerical simulation was successful to reproduce the behavior of the internal flow of OHP, including vapor generation in evaporation section, oscillation phenomena caused by the pressure difference and heat transfer due to oscillation. Comparing with the experimental tests, the simulation results agreed with the experimental records fairly well.

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“…Combined with the forced oscillation, the heat added on the evaporating area can be immediately distributed throughout the entire pulsating heat pipe. A number of researchers have investigated the heat transfer phenomena occurring in the pulsating heat pipe and shown that the heat transfer capability depends on the working fluids (Kim et al 2001;Lin et al 2001), dimensions (Shafii et al 2001;Zhang and Faghri 2002), tilt angles (Kim et al 2000(Kim et al , 2001, filled liquid ratio (Kim et al 2000(Kim et al , 2001, turns (Shafii et al 2001;van Es and Woering 2000;Wong et al 1999;Zuo et al 2001), and heat flux levels (Kim et al 2001;van Es and Woering 2000;Zuo et al 2001); however, the mechanisms governing the pulsating phenomena have not been fully understood including the detailed relationship between the oscillating frequency and dimensions, temperature difference between the evaporating section and condensing section, filled liquid ratio, working fluids, and operating temperature.…”

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confidence: 99%

An investigation of oscillating motions in a miniature pulsating heat pipe

Hanlon

Chen

2005

Microfluid Nanofluid

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A mathematical model for predicting the oscillating motion in a pulsating heat pipe is presented. The model considers the thermal energy from the temperature difference between the evaporator and condenser as the driving force for the oscillating motion, which will overcome both the frictional force and the force due to the deformation of compressible bubbles. The results show that the oscillating motion depends on the temperature difference between the condensing section and evaporating section, the working fluid, the operating temperature, the dimensions, and the filled liquid ratio. The results of this investigation will assist in the development of miniature pulsating heat pipes capable of operating at increased power levels. List of symbols Across-sectional area (m 2 ) D diameter (m) f friction factor, dimensionless g gravitational acceleration (m/s 2 ) h fg latent heat of vaporization (kJ/kg)Greek alphabets l viscosity (N s/m 2 ) q density (kg/m 3 ) s time (s) s s shear stress (N/m 2 ) U filled liquid ratio, i.e., the liquid volume divided by the total volume x frequency (rad/s)

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High heat flux heat pipe mechanism for cooling of electronics

Cited by 105 publications

References 7 publications

Non equilibrium lumped parameter model for Pulsating Heat Pipes: validation in normal and hyper-gravity conditions

Non equilibrium lumped parameter model for Pulsating Heat Pipes: validation in normal and hyper-gravity conditions

Numerical Simulation on Flow and Heat Transfer in Oscillating Heat Pipes

An investigation of oscillating motions in a miniature pulsating heat pipe

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