CAJ | 학술논문

实验研究了3种乙二醇基纳米流体（Al2O3-EG、ZnO-EG、CuO-EG）在不同质量分数（0.5%/3.0%/5.0%/7.0%）下的相对黏度随温度的变化规律，实验所用乙二醇基纳米流体采用两步法配制获得。结果表明：在30～60℃温度范围内乙二醇基纳米流体的相对黏度同温度之间并无较强的函数关系（单调递增或递减）；但在质量分数较高时，3种乙二醇基纳米流体的相对黏度随温度的变化会出现波动，且以非球形颗粒的ZnO乙二醇基纳米流体的波动最为显著；乙二醇基纳米流体的相对黏度均随纳米颗粒体积分数的增大而增大，其中CuO乙二醇基纳米流体相对黏度的增长速度最快，Al2O3乙二醇基纳米流体的增长速度最慢。最后比较分析了文献中相对黏度预测公式与本文实验数据的相符程度。
실험연구료3충을이순기납미류체（Al2O3-EG、ZnO-EG、CuO-EG）재불동질량분수（0.5%/3.0%/5.0%/7.0%）하적상대점도수온도적변화규률，실험소용을이순기납미류체채용량보법배제획득。결과표명：재30～60℃온도범위내을이순기납미류체적상대점도동온도지간병무교강적함수관계（단조체증혹체감）；단재질량분수교고시，3충을이순기납미류체적상대점도수온도적변화회출현파동，차이비구형과립적ZnO을이순기납미류체적파동최위현저；을이순기납미류체적상대점도균수납미과립체적분수적증대이증대，기중CuO을이순기납미류체상대점도적증장속도최쾌，Al2O3을이순기납미류체적증장속도최만。최후비교분석료문헌중상대점도예측공식여본문실험수거적상부정도。
An experimental study was carried out on the viscosity of ethylene glycol (EG) - based nanofluids containing Al2O3, ZnO and CuO nanoparticles with the particle concentrations of 0.5%/3.0%/5.0%/7.0%(mass), respectively. Nanofluid samples were prepared by the two-step method without adding surfactant. The relative viscosity of EG-based nanofluids was not a strong monotonous function of temperature within 30-60℃. Nevertheless, the relative viscosity of EG-based nanofluids fluctuated with increasing temperature when mass fraction was high enough, with the fluctuation of ZnO (elongated)-EG nanofluid being more significant. It was also found that the relative viscosity of all the nanofluids tested increased with increasing volume fraction. Among them, CuO-EG increased most intensely while Al2O3-EG increased most moderately. Finally, a comparison analysis was made between the present experimental data and the prediction equations in literature.