Simultaneous measurements of concentration and velocity in a CO2 jet issuing into a grid turbulence by two-sensor hot-wire probe
✍ Scribed by Yasuhiko Sakai; Takao Watanabe; Satoru Kamohara; Takehiro Kushida; Ikuo Nakamura
- Publisher
- Elsevier Science
- Year
- 2001
- Tongue
- English
- Weight
- 655 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0142-727X
No coin nor oath required. For personal study only.
✦ Synopsis
A new simple method has been developed to measure the concentration and velocity simultaneously for the gas mixture (CO 2 ± air) ¯ow by two hot-wire probes. By using a calibration map, the values of the instantaneous concentration and velocity can be determined from the voltages of two hot-wire probes with dierent overheat ratios (OHR) by digital data processing. This method does not require subtle adjustment of the OHR to achieve insensitivity to the CO 2 concentration, as in the past work by Chassaing (M elange turbulent de gaz inertes dans un jet tube libre, Th ese Doc. Sciences 42, Inst. Nat. Poly. de Toulouse, 1979). The measurements have been performed in a CO 2 jet in grid turbulence. The experimental results for the centerline and radial distributions of the mean and r.m.s. values of mass fraction concentration and velocity, and axial scalar ¯ux are consistent with previous data.