Experimental study on flow and heat transfer characteristics of liquid cooling device based on multi-orifice dual synthetic jets

KANG Ying; DENG Xiong; LUO Zhenbing; ZHU Yinxin; PENG Can; XIA Zhixun

doi:10.7638/kqdlxxb-2024.0038

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Experimental study on flow and heat transfer characteristics of liquid cooling device based on multi-orifice dual synthetic jets

更新时间：2026-05-28

- Experimental study on flow and heat transfer characteristics of liquid cooling device based on multi-orifice dual synthetic jets
- Vol. 43, Issue 10, Pages: 23-32(2025)
- 作者机构：
  
  国防科技大学空天科学学院,长沙,410073
- 作者简介：
- 基金信息：
- DOI：10.7638/kqdlxxb-2024.0038
  CLC： V211.3;O35
- Published：2025
- 稿件说明：
移动端阅览
康赢, 邓雄, 罗振兵, 等. 基于多孔合成双射流的液冷装置流动和传热特性实验研究[J]. 空气动力学学报, 2025, 43(10): 23−32.

KANG Ying, DENG Xiong, LUO Zhenbing, et al. Experimental study on flow and heat transfer characteristics of liquid cooling device based on multi-orifice dual synthetic jets[J]. 2025, 43(10): 23-32.
康赢, 邓雄, 罗振兵, 等. 基于多孔合成双射流的液冷装置流动和传热特性实验研究[J]. 空气动力学学报, 2025, 43(10): 23−32. DOI： 10.7638/kqdlxxb-2024.0038

KANG Ying, DENG Xiong, LUO Zhenbing, et al. Experimental study on flow and heat transfer characteristics of liquid cooling device based on multi-orifice dual synthetic jets[J]. 2025, 43(10): 23-32. DOI： 10.7638/kqdlxxb-2024.0038.

摘要

为了解决航空航天、电子器件等领域的散热难题，本文设计了一种多孔合成双射流激励器并开展了合成双射流液冷实验。实验研究了不同热流密度、通道入口流量、驱动频率等参数下合成双射流液冷装置的性能，同时分析了各参数对合成双射流液冷装置的散热性能和流动性能的影响特性。实验结果表明，装置不同位置处的壁面温度随着热流密度的增加而升高。合成双射流激励器工作后，壁面温度降低。激励器关闭时，壁面温度随着通道入口流量增大而降低，通道进出口压降随着通道入口流量的增加而增大。这是因为流量越大，流体带走热量的速度越快，从而温度降低。激励器开启后，流量为0.16×10

–3

/min时，壁面温度下降了3.07 ℃，与激励器关闭、入口流量为0.4×10

–3

/min时的散热能力相当，至少可以减少583.08%的泵功，而合成双射流基本不引起压降的升高。在本文研究的频率中，20 Hz时合成双射流液冷装置表现最佳，此时壁面温度下降了3.80 ℃，而压降仅增加了0.03 kPa。驱动电压越大，壁面温度降低越明显，在驱动电压为240 V时，最高温度下降了4.16 ℃。综上所述，合成双射流能在不引起压降明显增加的同时，达到可观的散热效果。

Abstract

To address the heat dissipation challenge in aerospace and electronics

this paper undertakes liquid cooling experiments utilizing a novel multi-orifice dual synthetic jets actuator (MODSJA). The performance of the DSJ-based liquid cooling device and the associated flow fields are thoroughly analyzed

considering the effects of various parameters

including heat flux

channel inlet flow rate

and driving frequen

cy. Results indicate that the wall temperature of the device increases with increasing heat flux. When DSJ is on

the wall temperature decreases; otherwise

the wall temperature reduction can also be achieved by increasing the inlet flow rate

which substantially increases the pressure drops. This is because higher flow rate allows the fluid to carry away faster heat more quickly

resulting in a temperature drop. When the actuator is activated at a flow rate of 0.16×10

–3

/min

the wall temperature is reduced by 3.07 ℃

which is comparable to that achieved with an inlet flow rate of 0.4×10

–3

/min when the actuator is off. This indicates that the pump power requirement can be reduced at least 583.08% without causing additional pressurerop. Within the frequency range under investigation

the DSJ liquid cooling device achieves an optimal performance at 20 Hz

yielding a wall temperature decrease of 3.80 ℃ and a marginal increase of 0.03 kPa in the pressure drop. Moreover

a higher driving voltage results in a more pronounced wall temperature drop

achieving a maximum reduction of 4.16 ℃ at 240 V. In summary

the experimental results clearly show that DSJ can achieve significant heat dissipation with a negligible increase in pressure drop

thus making it a promising solution for heat management in aerospace and electronic applications.

关键词

Keywords

references

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