In this Bachelor thesis, we conducted an experimental analysis of gas-focused liquid sheets. We examined the effects of varying gas flow rates, liquid flow rates, and the angle of gas injection around the liquid jet on the length and width of the liquid sheets. We used nozzles with angles of 30°, 45°, and 60°, with a capillary diameter of 0.3 mm for both the gas and liquid inlets, and used two liquids: water and isopropanol. The liquid sheets were recorded using a CMOS camera, and the footage was analyzed using a computer program developed in this thesis. The results were presented graphically. The characteristics of the flow regimes were observed within the range of liquid Reynolds numbers from 92 to 2101 and gas Reynolds numbers from 152 to 1427. The results showed that the length and width of the liquid sheets increased with gas flow rates. We also found that with the increase in the liquid flow rate, the length of the liquid sheets increased while the width decreased. The widths of the observed liquid sheets ranged from 354 μm to 664 μm, and their lengths from 733 μm to 4999 μm. It was determined that when using isopropanol under the same gas and liquid flow rates, wider and longer liquid sheets were formed compared to water. The nozzles with different angles were compared based on the momentum flux ratio between the gas and liquid streams, and it was found that the width and length of the liquid sheets varied most significantly at momentum flux ratios between 0 and 50. Additionally, we demonstrated that at the same momentum flux ratios, the nozzles with a smaller angle between the gas and liquid capillaries produced wider and longer liquid sheets than nozzles with a larger angle.
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