Working Principle Simulations of a Dynamic ResonantWall Shear Stress Sensor Concept
| Autor: | Xu Zhang, Jonathan W. Naughton, William R. Lindberg |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Surface (mathematics)
Engineering business.industry Calibration curve Flow (psychology) Resonance Laminar flow dynamic resonant shear stress sensor Structural engineering Mechanics lcsh:Chemical technology Biochemistry Full Research Paper Atomic and Molecular Physics and Optics Analytical Chemistry Physics::Fluid Dynamics Boundary layer Hummer number Amplitude Shear stress lcsh:TP1-1185 Electrical and Electronic Engineering business fluid and mechanical model Instrumentation |
| Zdroj: | Sensors (Basel, Switzerland) Sensors, Vol 8, Iss 4, Pp 2707-2721 (2008) Sensors Volume 8 Issue 4 Pages: 2707-2721 |
| ISSN: | 1424-8220 |
| DOI: | 10.3390/s8042707 |
| Popis: | This paper discusses a novel dynamic resonant wall shear stress sensor concept based on an oscillating sensor operating near resonance. The interaction between the oscillating sensor surface and the fluid above it is modelled using the unsteady laminar boundary layer equations. The numerical experiment shows that the effect of the oscillating shear stress is well correlated by the Hummer number, the ratio of the steady shear force caused by the outside flow to the oscillating viscous force created by the sensor motion. The oscillating shear stress predicted by the fluid model is used in a mechanical model of the sensor to predict the sensor’s dynamic motion. Static calibration curves for amplitude and frequency influences are predicted. These results agree with experimental results on some extent, and shows some expectation for further development of the dynamic resonant sensor concept. |
| Databáze: | OpenAIRE |
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