Investigation of a jet in a cross flow using PIV

Gogineni, Sivaram; Sutkus, D. J.; Goss, L. P.; Glezer, A.

doi:10.2514/6.1995-790

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Simultaneous planar velocity measurements and OH imaging in a transverse jet flame

Hasselbrink

Mungal

Hanson

1998

J Vis

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We present simultaneous planar velocity and OR fluorescence measurements at the base of a lifted, nonpremixed, transverse methane jet flame of Reynolds number 6300 and jet-to-crossflow velocity ratio 11.5. Velocity measurements are obtained using particle image velocimetry (PIV), while nonresonant OR fluorescence is imaged via excitation of the A*-X (1,0) band near 283 nm. It is shown that at the flame base, the regions in the PIV images where particle density drops due to heat release closely overlap the regions where OR appears. Other preliminary results show that the base of the flame sheet typically resides just above a region where velocity magnitude is locally low, about three times the laminar flame speed, and that the fluid accelerates suddenly through the flame base. Experimental issues such as PIV accuracy and OR imaging in the presence of PIV particles are discussed.

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