Simulation on Heat Transfer Performance of Directionally Solidified Porous Copper Heat Sink

Chen, Liu Tao; Zhang, Huawei; Liu, Y.; Li, Y.X.

doi:10.4028/www.scientific.net/amr.875-877.1095

Cited by 1 publication

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References 4 publications

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“…At the same time, obvious progress has been made through experimental and theoretical investigations [5][6][7][8][9][20][21][22]. Chen [23] established a working window to describe the available pore structure parameters of Gasar Cu on condition that the pressure drop was 90 kPa and the heat transfer coefficient was as high as 10 W/(cm2• K). Existing studies show that the heat transfer capacity of this kind of heat sinks is closely related to the quality of Gasar metals.…”

Section: Introductionmentioning

confidence: 99%

Pore Structure Analysis of Large Size Gasar Cu Ingot Prepared by Bridgman Method

Zhang

et al. 2017

MSF

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Large size Gasar ingots have the advantage of cost saving and productivity improvement, while little attention has been paid to the preparation of large size ingots, especially those with high structural quality. Bridgman method was introduced to fabricate large size Gasar metal ingot. High quality Gasar Cu cylinder sample of 150 mm in diameter and about 200 mm in height (weighing about 20 kg) was obtained at a proper withdrawing velocity. Pore structure distribution at different heights and radii in the sample was measured and analyzed in detail using the image analyzing software. The results showed that the pore aspect ratio changed slightly along the sample height. All the other structure parameters including porosity, penetrative porosity, penetrative pore area and number ratio, pore diameter, pore length and the pore aspect ratio kept almost constant at heights of over 65 mm, while they all varied little along the sample radius. Most of the pores were straight and round. The results suggested that Bridgman method was feasible for the fabrication of large size high quality Gasar metal ingots. This would promote the commercial application of Gasar metals, such as Gasar Cu for micro-channel heat sinks.

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Section: Introductionmentioning

confidence: 99%

Pore Structure Analysis of Large Size Gasar Cu Ingot Prepared by Bridgman Method

Zhang

et al. 2017

MSF

View full text Add to dashboard Cite

show abstract

Simulation on Heat Transfer Performance of Directionally Solidified Porous Copper Heat Sink

Cited by 1 publication

References 4 publications

Pore Structure Analysis of Large Size Gasar Cu Ingot Prepared by Bridgman Method

Pore Structure Analysis of Large Size Gasar Cu Ingot Prepared by Bridgman Method

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