Uncertainty analysis of hot-wire data in turbulent flows are made for time-averaging and real-time data reduction techniques. Equations of uncertainty are derived in general form for every step of data taking and evaluation. Numerical examples are supplied for two-dimensional flat plate boundary layer data. Results show that the real-time data reduction techniques generally have a lower and much more uniform uncertainty distribution than the time-averaging techniques (whose uncertainties are much higher for the near-wall data).
|Original language||English (US)|
|Number of pages||6|
|Journal||Journal of Fluids Engineering, Transactions of the ASME|
|State||Published - Jan 1 1984|
All Science Journal Classification (ASJC) codes
- Mechanical Engineering