Accession Number : ADP008984

Title :   Flow Characteristics Downstream of V-Gutter Type Flame Holder in High Speed Flow,

Corporate Author : KOBE UNIV (JAPAN)

Personal Author(s) : Hosokawa, Shigeo ; Ikeda, Yuji ; Minato, Massashi ; Nakajima, Tsuyoshi

Report Date : 23 JUL 1992

Pagination or Media Count : 6

Abstract : Detailed velocity data downstream of annular v-gutter type flame holders in high speed flows was obtained using a fiber LDV. In order to measure fluctuating velocity of the flow at high data rate, the fiber LDV system was optimized for use in high speed flow conditions. It was found that twin oscillating recirculating vortices were formed behind the v-gutter and that these vortices were released and flowed downstream. The peak frequencies and scale of vortices were observed by FFT processing of time series velocity data. The vortex scale profile was almost independent of bulk velocity. (Author)

Descriptors :   *FLAME HOLDERS, *COMBUSTION STABILITY, *LASER VELOCIMETERS, DOPPLER EFFECT, VORTICES, DOWNSTREAM FLOW, FAST FOURIER TRANSFORMS.

Subject Categories : Combustion and Ignition
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE