Flows in a curved combustor inlet with and without a guide vane
- Natl Tsing Hua Univ., Hsin-Chu, Taiwan (China)
Laser Doppler velocimetry measurements of the longitudinal, radial, and spanwise velocity components are presented for the three-dimensional flowfield in a 60-deg curved combustor inlet duct with and without a guide vane. The Reynolds number based on the bulk mean velocity and hydraulic diameter was 2.53 x 10(exp 4). Quantities such as mean-velocity vectors, wall static pressure, size of the reversed flow region, number of secondary vortex pairs, streamwise mean vorticity, turbulence intensity contours, anisotropy, turbulent kinetic energy, and structure parameters were used to characterize the flow. Comparisons between the flow characteristics within the curved duct with and without a guide vane were also made. It was found that the presence of a guide vane partially suppresses formation of the region of flow reversal, provides a more uniform velocity distribution across the inner passage of the curved duct, and enhances a stronger secondary flow vortex in the cross-stream section. 34 refs.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 117650
- Journal Information:
- Journal of Propulsion and Power, Journal Name: Journal of Propulsion and Power Journal Issue: 3 Vol. 11; ISSN 0748-4658; ISSN JPPOEL
- Country of Publication:
- United States
- Language:
- English
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