Abstract
In order to establish a optical measuring method of spatial turbulence scale, a new laser 2-focus velocimeter (L2F) system with the high optical SN ratio was developed. It consists of a couple of L2F system in which wide-stripe type high power semiconductor laser was installed. Flow velocities were measured simultaneously at two adjacent points in a circular air jet, and all these velocity data and their corresponding data sampling time were acquired in time sequence by a personal computer. The correlation-based slotting technique was applied for analyzing the spatial correlation of turbulence. Estimated spatial- and temporal- turbulence correlations were compared to those measured by the hot wire anemometer. It is clearly shown that a couple of L2F system in conbination with the correlation-based slotting technique is very useful for turbulence correlation measurement.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 1999 3rd ASME/JSME Joint Fluids Engineering Conference, FEDSM'99, San Francisco, California, USA, 18-23 July 1999 (CD-ROM) |
| Publisher | American Society of Mechanical Engineers |
| Pages | 1 |
| Number of pages | 1 |
| ISBN (Print) | 0791819612 |
| Publication status | Published - 1999 |
| Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Earth and Planetary Sciences(all)
- Engineering(all)
- Environmental Science(all)