Abstract
Experimental measurements are used to validate a numerical model of a dynamic resonant wall shear stress sensor. The numerical model consists of an unsteady two-dimensional boundary-layer model for the flow and a simple mechanical model for the sensor itself. The sensor’s sensitivity to wall shear stress is experimentally determined in a flat-plate boundary layer, and the results agree closely with those from the numerical simulations. Using the validated model, it is determined that the energy lost in each sensor oscillation due to the interaction between the sensor and fluid increases with increasing mean wall shear stress.
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Acknowledgments
The authors would like to acknowledge the invaluable contributions to the development of this sensor by the second author William D. Armstrong who passed away in September 2006. He will be missed. This work supported in part by NSF under grant CTS-0500502 monitored by Michael Plesniak.
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Zhang, X., Armstrong, W.D., Lindberg, W.R. et al. Experimental validation of a dynamic resonant wall shear stress sensor. Exp Fluids 53, 1107–1121 (2012). https://doi.org/10.1007/s00348-012-1347-8
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DOI: https://doi.org/10.1007/s00348-012-1347-8