Several techniques associated with the use of hot wire anemometry in compressible turbulence measurements are described and tested in shock tube flows. These techniques include 1. in-situ calibration of the hot-wire probe by firing several shock waves of different strengths in the shock tube; 2. on-line analog frequency compensation or off-line digital compensation of the temperature-wire; 3. simultaneous acquisition of time-dependent flow velocity and temperature of the flow without invoking Morkovin's hypothesis of strong Reynolds analogy. The techniques were tested in two different shock tube facilities, where a grid generated turbulent flow interacting with a moving shock was set up.
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The financial support provided by National Science Foundation and NASA is greatly acknowledged.
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Briassulis, G., Honkan, A., Andreopoulos, J. et al. Application of hot-wire anemometry in shock-tube flows. Experiments in Fluids 19, 29–37 (1995). https://doi.org/10.1007/BF00192230
- Shock Wave
- Flow Velocity
- Shock Tube
- Tube Flow
- Simultaneous Acquisition