Features
Anemometer 1. Small size, little interference to the flow field;
2. Wide range of applications. Can be used not only for gases but also for liquids, in subsonic, transonic and supersonic flows of gases
3. High frequency response, up to 1 MHz.
4. High measurement accuracy and good repeatability. The disadvantage of the hot wire anemometer is that the probe interferes with the flow field to a certain extent, and the hot wire is easy to break.
5. In addition to measuring average velocity, pulsation and turbulence can also be measured; in addition to unidirectional motion, velocity components in multiple directions can be measured simultaneously.
The main purpose
1. Measure the speed and direction of the mean flow.
2. Measure the pulsating speed of the incoming flow and its frequency spectrum.
3. Measure the Reynolds stress in turbulent flow and the velocity dependence and time dependence of two points.
4. Measure the wall shear stress (usually with a hot film probe placed flush with the wall, the principle is similar to hot wire velocity measurement).
5. Measure the fluid temperature (pre-measure the change curve of the probe resistance with the fluid temperature, and then determine the temperature according to the measured probe resistance.
