Experimental investigation of thermoacoustic instability in inhomogeneous hydrogen swirling flames with adjustable mixing levels

Key Points

• Thermoacoustic instability emerges in hydrogen swirling flames, impacting combustion performance and efficiency.
• Significant findings are indicated by observable oscillations in pressure measurements across varying mixing levels.
• Experimental analysis utilized adjustable mixing levels to evaluate their influence on disturbance responses and stability metrics.
• Understanding these phenomena may enhance combustion systems and reduce emissions, demonstrating critical implications for engineering applications.