Research of the measurement method for the pressure distribution along the micro/mini-channel

Wang Haoli; Wang Bing

doi:10.11729/syltlx20170050

Volume 31 Issue 6

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Wang Haoli, Wang Bing. Research of the measurement method for the pressure distribution along the micro/mini-channel[J]. Journal of Experiments in Fluid Mechanics, 2017, 31(6): 56-61. doi: 10.11729/syltlx20170050

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Research of the measurement method for the pressure distribution along the micro/mini-channel

doi: 10.11729/syltlx20170050

Wang Haoli^{1, 2
,
,},
Wang Bing²

1.
College of Electrical Engineering, Jinling Institute of Technology, Nanjing 211169, China
2.
China Jiliang University, Hangzhou 310018, China

Received Date: 2017-04-25
Rev Recd Date: 2017-06-21
Publish Date: 2017-12-25

Abstract

Abstract

In this study, a system was designed and built up for the pressure measurement along micro/mini-channel, which mainly includes micro/mini-channel and square pressure cavities on PMMA chip, micro-strain sensors and multi-channel strain instruments. The static pressure in micro/mini-channel was provided by the syringe pump, and the high precision pressure values measured by the micromanometer of FCO510 was employed as the standard pressure. The strain values from the strain sensors installed on the square pressure cavities were obtained by multi-channels strain gauge, and the calibration functions between the standard pressure and the strain were established. The pressure distributions of three kinds of micro pressure chips were measured under flow rates of 80, 70, 60 and 50mL/min, respectively. The pressures have good linear distribution.The uncertainty analysis indicates that the relative uncertainty of the pressure error is between 0.15% and 6.82%. The validity and reliability of pressure measurement are high.
- micro/mini-channel,
- pressure along the channel,
- strain measurement,
- uncertainty

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References(13)

References

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