Kumar RM, Adhikari S, Bibik O, Emerson BL, Fugger CA, Lieuwen TC. Simultaneous multiple laser beam intensity profile correction and its application to a vitiated bluff body combustor field.
APPLIED OPTICS 2022;
61:532-539. [PMID:
35200894 DOI:
10.1364/ao.440708]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Accepted: 12/15/2021] [Indexed: 06/14/2023]
Abstract
Simultaneous high-speed stereo-particle image velocimetry, OH planar-laser-induced fluorescence (PLIF), and CH2O PLIF measurements in a vitiated bluff body combustor are considered. An ex situ, simultaneous, time-resolved laser sheet intensity profile correction procedure is introduced. This procedure is easily implemented experimentally and is capable of correcting multiple sheets at the same time. As a proof of concept, the procedure is applied to perform correction of the CH2O PLIF images in vitiated and unvitiated conditions. The challenges associated with CH2O PLIF under these combustor operating conditions are also discussed.
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