Angular response of hot-wire probes
| Autor: | L. di Mare, I J Day, Thomas Jelly |
|---|---|
| Přispěvatelé: | Innovate UK |
| Rok vydání: | 2016 |
| Předmět: |
Convection
ANEMOMETER Drag coefficient Technology Convective heat transfer FLOW Flow (psychology) Engineering Multidisciplinary 02 engineering and technology 01 natural sciences 09 Engineering 010305 fluids & plasmas Physics::Fluid Dynamics Optics Engineering 0203 mechanical engineering Anemometer HEAT-TRANSFER 0103 physical sciences Calibration hot-wire anemometry angular response Instrumentation Engineering (miscellaneous) Instruments & Instrumentation viscous corrections Physics CALIBRATION Science & Technology 02 Physical Sciences business.industry Applied Mathematics Mechanics CYLINDERS 020303 mechanical engineering & transports AERODYNAMIC DISTURBANCES CONVECTION Heat transfer DIRECTIONAL SENSITIVITY Potential flow TURBULENCE MEASUREMENTS business |
| Popis: | A new equation for the convective heat loss from the sensor of a hot-wire probe is derived which accounts for both the potential and the viscous parts of the flow past the prongs. The convective heat loss from the sensor is related to the far-field velocity by an expression containing a term representing the potential flow around the prongs, and a term representing their viscous effect. This latter term is absent in the response equations available in the literature but is essential in representing some features of the observed response of miniature hot-wire probes. The response equation contains only four parameters but it can reproduce, with great accuracy, the behaviour of commonly used single-wire probes. The response equation simplifies the calibration the angular response of rotated slanted hot-wire probes: only standard King's law parameters and a Reynolds-dependent drag coefficient need to be determined. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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