The influence of tube wall on fluid flow, permeability and streaming potential in porous transducer for liquid circular angular accelerometers

Siyuan Cheng, Mengyin Fu, Meiling Wang, Francis A Kulacki

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The effects of the tube wall on the fluid flow, permeability and streaming potential are reported for a porous transducer for use in a liquid circular angular accelerometer. Fluid flow and pressure near the surface of the transducer are modeled and validated numerically. We show that the differential pressure across the transducer is not affected by the tube wall. A capillary bundle model is employed to represent the transducer to obtain the radial porosity, permeability and streaming potential distributions due to wall effects. A simulated spherical packing is generated from measured particle parameters to specify the model by calculating the radial porosity distribution. The theoretical permeability and streaming potential coupling coefficient are located within one standard deviation from the mean of measurements. Due to the radial distribution of streaming potential, the electrode can be configured into a large streaming potential region to measure the signal more efficiently. Three electrode configurations are described based on these results, which can be applied to increase the signal of the sensor.

Original languageEnglish (US)
Pages (from-to)176-185
Number of pages10
JournalSensors and Actuators, A: Physical
Volume276
DOIs
StatePublished - Jun 15 2018

Fingerprint

accelerometers
Accelerometers
fluid flow
Flow of fluids
Transducers
permeability
transducers
tubes
Liquids
liquids
Porosity
Electrodes
porosity
differential pressure
fluid pressure
electrodes
coupling coefficients
radial distribution
bundles
standard deviation

Keywords

  • Angular accelerometer
  • Capillary bundle model
  • Porous transducer
  • Streaming potential
  • Wall effect

Cite this

The influence of tube wall on fluid flow, permeability and streaming potential in porous transducer for liquid circular angular accelerometers. / Cheng, Siyuan; Fu, Mengyin; Wang, Meiling; Kulacki, Francis A.

In: Sensors and Actuators, A: Physical, Vol. 276, 15.06.2018, p. 176-185.

Research output: Contribution to journalArticle

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