Investigation of the turbulence characteristics in the swirling flow of a gun-type gas burner with two different hot-wire probes |
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Authors: | Jang-Kweon Kim |
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Affiliation: | (1) Kunsan National University, Kunsan, Chonbuk, Korea |
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Abstract: | Mean velocities and turbulence characteristics in the swirling flow of a gun-type gas burner (GTGB) were measured with a triaxial
hot-wire probe (T-probe) and compared with previous data measured with an X-type hot-wire probe (Xprobe). Vectors and axial
mean velocity data obtained by the measurement of the two types of probes in the horizontal plane and in the cross section
differ in magnitude, but have very similar shape in overall distribution. Axial mean velocity components show especially wide
differences around the slits and outer part of the swirl vanes within the range of X/R=2. Also, various turbulence intensities
appear in a similar trend to axial mean velocity components within the range of X/R=2. The radial component of turbulence
intensity around the slits and the outer part of swirl vanes above the range of X/R=2 has an opposite phenomenon. On the whole,
the T-probe’s measurements appear smaller than the X-probe’s. This shows that the X-probe is better than the T-probe, especially
on the swirling flow because it is much easier to use. |
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Keywords: | Gun-type gas burner (GTGB) Hot-wire anemometer (HWA) Slit Subsonic wind tunnel Swirl flow Swirl vane Triaxial hot-wire probe (T-probe) X-type hot-wire probe (X-probe) |
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