Hot-wire probe used for measurement of one dimensional flow with bi-direction

Chengxu Tu

doi:10.1117/12.885409

31 December 2010 Hot-wire probe used for measurement of one dimensional flow with bidirection

Chengxu Tu

Proceedings Volume 7544, Sixth International Symposium on Precision Engineering Measurements and Instrumentation; 754431 (2010) https://doi.org/10.1117/12.885409
Event: Sixth International Symposium on Precision Engineering Measurements and Instrumentation, 2010, Hangzhou, China

Abstract

In order to solve the difficulties of the measurement of one-dimensional and bi-direction flow by a hot-wire probe, a test method and the model experiment are presented in this paper. Based on the exiting hot-wire sensor, another same sensor is added. The two sensors are installed in parallel whose distance is 6 times their diameters, and they are separately connected to the controller. If the flow goes around two circular cylinders in tandem with the low Reynolds number, an obvious velocity drop between free-stream and gap flow can be found. Consequently, the velocity detected by the upstream sensor is higher than that by the downstream one. Because the relatively fixed position of the pair of sensors has been determined beforehand, the direction of the one-dimensional flow can be deduced from the plus and minus of velocity drop detected by the two sensors.

Citation Download Citation

Chengxu Tu "Hot-wire probe used for measurement of one dimensional flow with bidirection", Proc. SPIE 7544, Sixth International Symposium on Precision Engineering Measurements and Instrumentation, 754431 (31 December 2010); https://doi.org/10.1117/12.885409

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