Temperature field measurements between a Bunsen flame and flat a cold plate by using PLIF

Abstract

The present experimental work reports on the temperature measurements in a Bunsen flame, covered by a flat cooled plate from the top. The temperature field is measured based on the planar laser-induced fluorescence method for hydroxyl radical (OH) during the excitation of excitation Q1(8) line of the (1-0) band of the A2Σ+-X2Π electronic system. Thermometry was based on the imaging of the ratio of the fluorescence intensity for the band (2-0) and bands (0-0), (1-1). The paper presents the obtained temperature fields for the distances between the plate and the burner of 1, 2 and 3 calibres. The paper also concludes that the used method can be implemented using a single-pulse laser illumination and is effective for the detection of cold zones.

Prediction and Optimization of Heat Transfer Performance of Premixed Methane Impinging Flame Jet Using the Kriging Model and Genetic Algorithm

“…Another reason is that Figure 12a shows the existence of a low-velocity region, which causes the stagnation region to expand and reduce its temperature. This is consistent with the results measured by Tolstoguzov and Chikishev using non-invasive laser diagnostic technology [60]. It may be related to the velocity distribution at the burner exit.…”

“…The velocity distribution of the top hat is produced by the nozzle burner used in this study and in Ref. [60]. It is different from the parabolic velocity distribution using a tube burner [4,8,26,45].…”