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 language | English (US) |
|---|---|
| Pages (from-to) | 176-185 |
| Number of pages | 10 |
| Journal | Sensors and Actuators, A: Physical |
| Volume | 276 |
| DOIs | |
| State | Published - Jun 15 2018 |
Bibliographical note
Funding Information:This work is supported by the National Natural Science Foundation of China (Nos. 61427805 and 61473040 ) and China Scholarship Council (No. 201606030031 ). The authors would like to thank the technical assistance of Ruoyu Guo from Beijing Institute of Technology. And the authors also gratefully appreciate the library and computational resources of University of Minnesota. Siyuan Cheng received his B.Eng. degree from School of Automation, Beijing Institute of Technology, China, in 2013 and he is a Ph.D student of the same affiliation now. He is also a visiting student in Mechanical Engineering, University of Minnesota in the current. His research interests include new angular accelerometer, porous media, fluid mechanics and new amphibious robot. Mengyin Fu received his M.Eng. degree from School of Automation, Beijing Institute of Technology, China, in 1992 and his Ph.D degree from Chinese Academy of Sciences in 2000. He is the president of Nanjing University of Science and Technology now, and a professor of both Beijing Institute of Technology and Nanjing University of Science and Technology. He is a Changjiang Scholar of Ministry of Education of China. His main interests include navigation system, high-precision gyroscope, new angular accelerometer and unmanned vehicles. Meiling Wang received her M.Eng. degree and Ph.D degree both from School of Automation, Beijing Institute of Technology(China) in 1995 and 2007 respectively. She is currently a professor of Beijing Institute of Technology and she is a Changjiang Scholar of Ministry of Education of China. Her research interests mainly include geographic information system, new angular accelerometer, high-precision gyroscope and unmanned vehicles. F.A. Kulacki received his Ph.D in Mechanical Engineering, University of Minnesota in 1971. He has been the professor of Mechanical Engineering at the University of Minnesota from 1992 to present. He has served as Head of Mechanical and Aerospace Engineering at the University of Delaware, Dean of engineering at Colorado State University and Dean of the College of Science and Engineering at the University of Minnesota. He is a Life Fellow of American Society of Mechanical Engineers and a Fellow of American Association for Advancement of Science. He has received the 2004 ASME Distinguished Service Award, the 2015 Heat Transfer Memorial Award, and the 2017 E. F. Church Award of the ASME. His current research concerns natural convection heat transfer, heat and mass transfer in porous media, freezing and melting of frost, electronics cooling, and boiling of dilute emulsions.
Publisher Copyright:
© 2018 Elsevier B.V.
Keywords
- Angular accelerometer
- Capillary bundle model
- Porous transducer
- Streaming potential
- Wall effect