Experimental and numerical study of single and two-phase flow and heat transfer in aluminum foams

Li, H.Y.; Leong, K.C.

doi:10.1016/j.ijheatmasstransfer.2011.07.002

Cited by 46 publications

(12 citation statements)

References 25 publications

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“…This is in agreement with the experimental data from Li and Leong. 32 In Li and Leong's research, a temperature jump could be observed on the heated surface indicating the transaction of the phase change phenomenon. Another experiment carried out by Chen et al 33 in 2014 on condensation in microchannel indicates that the wall temperature increased with the increase in the Reynolds number and decreased with the axial coordinate during the process of condensation.…”

Section: Temperature Distributionmentioning

confidence: 92%

Numerical simulation of condensation in microchannels between spherical particles

Liu

Peng

Ling

et al. 2016

Advances in Mechanical Engineering

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In this article, a numerical investigation of vapor condensation in a two-dimensional ordered microchannel was conducted with computational fluid dynamics software Fluent. A simplified physical model was built up to simulate a rectangular channel filled with particles. A constant wall heat flux was added to the side walls of the rectangular channel. Volume of fluid model was adopted to pursue the interface of the gas and liquid. The results showed that a better heat transfer performance could be obtained with the porous structure. The local heat transfer coefficient obtained from simulation was in good accordance with the former experimental data, which increased with the increase in fluid velocity and decreased along the flow direction. Parametric analyses were conducted concerning the effects of initial vapor velocity u 0 , initial temperature T 0 , and wall heat flux q w on local heat transfer coefficient. The velocity u 0 played a significant role during the process of condensation. Temperature distributions along the porous channel and side walls were also analyzed. The results showed that the temperature decreased along the flow direction and increased with the increase in fluid velocity.

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Section: Temperature Distributionmentioning

confidence: 92%

Numerical simulation of condensation in microchannels between spherical particles

Liu

Peng

Ling

et al. 2016

Advances in Mechanical Engineering

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“…They also found heat transfer enhancement due to the porous media. Li and Leong [20] studied the flow boiling characteristics of water and FC-72. They examined the heat transfer process before nuclear boiling, the onset of nuclear boiling, and the hysteresis effect using numerical Energies 2021, 14, 2440 2 of 13 simulation and experiments.…”

Section: Introductionmentioning

confidence: 99%

Flow Pattern Map of Flow Boiling in a Rectangular Channel Filled with Porous Media

Kim

2021

Energies

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A flow visualization study was carried out for flow boiling in a rectangular channel filled with and without metallic random porous media. Four main flow patterns are observed as intermittent slug-churn flow, churn-annular flow, annular-mist flow, and mist flow regimes. These flow patterns are clearly classified based on the high-speed images of the channel flow. The results of the flow pattern map according to the mass flow rate were presented using saturation temperatures and the materials of porous media as variables. As the saturation temperatures increased, the annular-mist flow regime occupied a larger area than the lower saturation temperatures condition. Therefore, the churn flow regime is narrower, and the slug flow more quickly turns to annular flow with the increasing vapor quality. The pattern map is not significantly affected by the materials of porous media.

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“…The Authors found that the heat transfer coefficient is almost doubled when increasing the number of Pores Per Inch (PPI) from 20 to 40. Li and Leong (2011) investigated water and FC-72 flow boiling in aluminium foams. The heat transfer process prior to the onset of nucleate boiling and the critical heat flux for FC-72 were studied.…”

Section: Introductionmentioning

confidence: 99%

Low-GWP refrigerants flow boiling heat transfer in a 5 PPI copper foam

Diani

Mancin

Doretti

et al. 2015

International Journal of Multiphase Flow

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Experimental and numerical study of single and two-phase flow and heat transfer in aluminum foams

Cited by 46 publications

References 25 publications

Numerical simulation of condensation in microchannels between spherical particles

Numerical simulation of condensation in microchannels between spherical particles

Flow Pattern Map of Flow Boiling in a Rectangular Channel Filled with Porous Media

Low-GWP refrigerants flow boiling heat transfer in a 5 PPI copper foam

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