Abstract
A new flying hot-wire system has been developed for the measurement of highly turbulent and reversing flows. The apparatus is of rectilinear design, incorporating many features which extend its range of application beyond the range of previous designs. One of the advantages of this system is that it is mounted on a flow visualization wind tunnel which allows complementary qualitative and quantitative studies to be performed. This system has been used successfully to measure turbulent and reversing flows including the flow past a fence. Some results are presented.
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Abbreviations
- H :
-
height of fence
- LED:
-
light emitting diode
- ST1:
-
Schmitt trigger input signal
- u, v :
-
velocity components in the x and y directions respectively
- 〈u〉, 〈v〉:
-
phase-averaged components of u and v
- x, y :
-
orthogonal coordinate system with the x-direction aligned with the centreline along the tunnel floor and the y-component normal to the floor
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Kelso, R.M., Lim, T.T. & Perry, A.E. A novel flying hot-wire system. Experiments in Fluids 16, 181–186 (1994). https://doi.org/10.1007/BF00206537
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DOI: https://doi.org/10.1007/BF00206537