Numerical study on the synergistic effects of ultrasonic transducers and nano-enhanced phase change material in CPU thermal management

IF 6.4 2区工程技术 Q1 MECHANICS International Communications in Heat and Mass Transfer Pub Date : 2024-07-05 DOI:10.1016/j.icheatmasstransfer.2024.107773

Amin Shahsavar, Mahan Hasani, Maziar Moradvandi

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Abstract

This study numerically investigates the effectiveness of concurrently applying nano-enhanced phase change material (NEPCM) and an ultrasonic field for the thermal management of a pin fin heat sink. The role of the NEPCM is to absorb heat from the heat sink wall, while the ultrasonic field generated by ultrasonic transducers facilitates the accelerated melting of the NEPCM. The study investigated how varying the number of ultrasonic transducers positioned near each side wall of the square cross-section heat sink, along with adjusting the concentration of nanoparticles in the NEPCM, impacts the heat sink's performance. The total power consumption of the transducers is assumed to be constant and an increase in their number is associated with a decrease in the power consumption of each transducer. It was observed that raising the number of transducers and lowering the nanoparticle concentration both contributed to a decrease in the CPU's highest temperature. Additionally, it was found that by using the combination of ultrasonic field and NEPCM, the average temperature of CPU can be reduced by 12.33–15.91 °C to the case without the ultrasonic field. Moreover, raising the number of transducers and lowering the nanoparticle concentration both contributed to a decrease in the CPU's average temperature.

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关于 CPU 热管理中超声波传感器和纳米增强相变材料协同效应的数值研究

本研究通过数值方法研究了同时应用纳米增强相变材料 (NEPCM) 和超声波场对鳍片散热器进行热管理的有效性。NEPCM 的作用是从散热器壁吸收热量，而超声波传感器产生的超声波场则有助于加速 NEPCM 的熔化。该研究调查了不同数量的超声波传感器靠近方形截面散热器的每个侧壁，以及调整 NEPCM 中纳米粒子的浓度对散热器性能的影响。假定传感器的总功耗不变，传感器数量的增加会导致每个传感器功耗的降低。研究发现，增加传感器数量和降低纳米粒子浓度都有助于降低 CPU 的最高温度。此外，研究还发现，通过结合使用超声波场和 NEPCM，CPU 的平均温度可比没有超声波场的情况降低 12.33-15.91 °C。此外，增加换能器数量和降低纳米粒子浓度都有助于降低中央处理器的平均温度。

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来源期刊

International Communications in Heat and Mass Transfer 工程技术-力学

CiteScore

11.00

自引率

10.00%

发文量

648

审稿时长

32 days

期刊介绍： International Communications in Heat and Mass Transfer serves as a world forum for the rapid dissemination of new ideas, new measurement techniques, preliminary findings of ongoing investigations, discussions, and criticisms in the field of heat and mass transfer. Two types of manuscript will be considered for publication: communications (short reports of new work or discussions of work which has already been published) and summaries (abstracts of reports, theses or manuscripts which are too long for publication in full). Together with its companion publication, International Journal of Heat and Mass Transfer, with which it shares the same Board of Editors, this journal is read by research workers and engineers throughout the world.