Study and Improvement on Measuring Liquid Viscosity Coefficient with Falling Balls

Table 1. [in Chinese]
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Table 1. [in Chinese]
帧数刻度/mm 帧数差/帧时间差/s 平均速度/（mm·s⁻¹）
2829 390
2878 392 49 0.204167 9.795918
2928 394 50 0.208333 9.6
2977 396 49 0.204167 9.795918
3027 398 50 0.208333 9.6
3077 400 50 0.208333 9.6

Table 2. [in Chinese]

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Table 2. [in Chinese]

T/ ℃	η理论值/ （Pa·s）	秒表计时法η/ 相对误差E	视频分析法η/ 相对误差E
η—Pa·s；E—%。
30	0.451	0.430/4.6	0.453/0.71
32	0.400	0.382/5.0	0.392/2.20
35	0.313	0.317/1.3	0.311/0.38
40	0.230	0.218/5.2	0.229/0.46

Table 3. [in Chinese]
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Table 3. [in Chinese]
小球直径/mm η理论值/ T η实测值/ 相对误差E
η—Pa·s；T—℃；E—%。
1 0.75/23 0.774/3.3
1 0.60/25 0.579/1.8
2 0.60/25 0.112/443
4 0.60/25 0.0251/2290
8 0.60/25 0.0215/2688

Table 4. [in Chinese]
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Table 4. [in Chinese]
T/℃ 距中心距离/cm 速度/ （mm·s⁻¹） η测量值/ （Pa·s）相对误差 E/%
30 0.00 6.910 0.4532 0.706
32 0.00 8.003 0.3913 2.177
35 0.00 9.695 0.3213 0.376
40 0.00 13.280 0.2335 1.522

Table 5. [in Chinese]
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Table 5. [in Chinese]
T/℃ 距中心距离/cm 速度/ （mm·s⁻¹） η测量值/ （Pa·s）相对误差 E/%
30 1.10 7.108 0.4406 2.098
32 1.10 8.173 0.3831 4.215
35 1.10 10.010 0.3112 3.653
40 1.10 13.180 0.2353 2.301

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Senyuan YU, Ruitao TANG, Qiwang YU, Xiaobei BIAN, Maoxiang WANG. Study and Improvement on Measuring Liquid Viscosity Coefficient with Falling Balls[J]. Experiment Science and Technology, 2024, 22(2): 26

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