Abstract
The performance of a constant temperature normal hot wire in a supersonic flow is critically examined. It is shown that this instrument is inherently unsuitable for measuring turbulent temperature correlations because of the highly nonlinear response to temperature fluctuations, particularly at low overheat ratios. The instrument is therefore limited to measurements of mean and fluctuating mass flow rates. Suitable calibration procedures, as well as the limits on spatial and temporal resolution are discussed, and corrections for mean stagnation temperature changes are suggested. The instrument was used to measure the mass flow fluctuations in a zero pressure gradient Mach 2.9 turbulent boundary layer. A comparison with the available data suggests good agreement. (A)
Original language | English (US) |
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Journal | EXP. FLUIDS |
Volume | 1 |
Issue number | 2 , 1983, p.83-92. |
State | Published - 1983 |
All Science Journal Classification (ASJC) codes
- Computational Mechanics
- Mechanics of Materials
- General Physics and Astronomy
- Fluid Flow and Transfer Processes