Experimental Investigation of Flame/Plate Impingement at Variable Height and Inclination
DOI:
https://doi.org/10.31272/jeasd.2256Keywords:
Flat Plate, Fluctuation, Impinging Flame, Inclination Angle, Premixed FlameAbstract
Flame impingement is widely employed in industrial heating applications, where burner configuration significantly influences flame behavior and heat transfer. This study experimentally investigates the effects of burner-to-plate distance (H/D = 1, 3, and 5) and plate inclination angle (0°, 20°, and 40°) on the characteristics of a premixed propane flame impinging on a flat aluminum plate. A high-speed camera operating at 240 frames/s was used to capture flame images, while MATLAB-based digital image processing was applied to quantify the projected flame area, flame boundary fluctuations, and RGB color intensities. The results show that increasing both H/D and plate inclination promotes flame spreading and increases the projected flame area owing to enhanced flame development and surface attachment. Flame fluctuations also increase with burner-to-plate distance and inclination angle, indicating reduced flame stability caused by stronger buoyancy effects and aerodynamic instabilities. RGB analysis revealed higher green and blue intensities at larger H/D and inclination angles, suggesting improved premixed combustion with limited soot formation. These findings demonstrate that burner spacing and plate inclination strongly influence flame dynamics and provide useful guidance for optimizing industrial flame-heating systems to improve combustion efficiency and thermal performance.
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Copyright (c) 2026 Nooralhuda Abd Muhsin, Ahmad Muneer El-Deen Faik (Author)
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