The behaviour of a thermal-gradient sensor in laminar and turbulent shear flow
- 1 July 1989
- journal article
- Published by IOP Publishing in Journal of Physics E: Scientific Instruments
- Vol. 22 (7) , 490-498
- https://doi.org/10.1088/0022-3735/22/7/015
Abstract
The author describes a thermal sensor which detects flow on the basis of a flow-induced temperature gradient on its surface. A theoretical model has been developed to investigate the influence of design parameters such as sensor dimensions and material properties on the sensitivity and the time response of the sensor. The behaviour of the sensor has been analysed for laminar and turbulent shear flow, showing that the presence of turbulence will increase the total heat transfer, while reducing the induced temperature difference. Flow experiments have been performed in laminar and turbulent flow with an integrated silicon sensor, and the results of the tests were found to be in good agreement with the predictions from theory.Keywords
This publication has 7 references indexed in Scilit:
- Integrated silicon flow-direction sensorSensors and Actuators, 1989
- Integrated flow friction sensorSensors and Actuators, 1988
- Silicon flow sensorsIEE Proceedings D Control Theory and Applications, 1988
- Thermal sensors based on the seebeck effectSensors and Actuators, 1986
- Monolithic integrated direction-sensitive flow sensorIEEE Transactions on Electron Devices, 1982
- Skin-Friction Measurements in Laminar and Turbulent Flows Using Heated Thin-Film GagesAIAA Journal, 1972
- The effect of thermal conduction of the wall upon convection from a surface in a laminar boundary layerInternational Journal of Heat and Mass Transfer, 1967