Examination of the flow around a hot-wire probe using particle image velocimetry
| Autor: | L. J. W. Graham, Julio Soria, Klaus Bremhorst |
|---|---|
| Rok vydání: | 1995 |
| Předmět: |
Fluid Flow and Transfer Processes
Physics business.industry Flow (psychology) Computational Mechanics General Physics and Astronomy Image processing Mechanics Downwash Optics Particle image velocimetry Interference (communication) Mechanics of Materials Particle tracking velocimetry Minimum deviation business Magnetosphere particle motion |
| Zdroj: | Experiments in Fluids. 19:379-382 |
| ISSN: | 1432-1114 0723-4864 |
| Popis: | Previous work has shown that the k 2 term in the effective cooling velocity equation for inclined hot-wires can become negative under certain probe configurations and wire length-to-diameter ratios. It was hypothesised that this was due to a downwash component of velocity along the wire when prong interference effects were expected to be minimal. Direct measurements of the flow around a typical hot-wire probe using digital particle image velocimetry have shown that this downwash velocity component does exist, leading to negative values of k 2 as calculated from the angle of deviation from the free stream. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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