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Frequency-Dependent Streaming Potential in a Porous Transducer-Based Angular Accelerometer
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DOI：10.3390/s19081780.png)
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摘要
En 中文
This paper presents a transient model of streaming potential generated when fluid flows through a porous transducer, which is sintered by glass microspheres and embedded in the circular tube of a liquid circular angular accelerometer (LCAA). The streaming potential coupling coefficient (SPC) is used to characterize this proposed transient model by combining a capillary bundle model of a porous transducer with a modified Packard's model. The modified Packard's model is developed with the consideration of surface conductance. The frequency-dependent streaming potential is investigated to analyze the effect of structure parameters of porous media and the properties of the fluid, including particle size distribution, zeta potential, surface conductance, pH, and solution conductivity. The results show that the diameter of microspheres not only affects bandwidth and transient response, but also influences the low-frequency gain. In addition, the properties of the fluid can influence the low-frequency gain. Experiments are actualized to measure the steady-state value of permeability and SPC for seven types of porous transducers. Experimental results possess high consistency, which verify that the proposed model can be utilized to optimize the transient and steady-state performance of the system effectively.
Keyword:
bandwidth
liquid circular angular accelerometer
low-frequency gain
porous transducer
streaming potential coupling coefficient
surface conductance
transient model
zeta potential
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IF:
3.5
论文数:
7.2W
被引数:
20.9W
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