Analysis of Thermoacoustic Oscillation Self-coupling Phenomenon in Cryogenic Liquid Transfer Lines

The chapter explores the critical issue of thermoacoustic oscillations in cryogenic liquid transfer lines, which can significantly impact the performance of cryogenic systems. The study introduces a phase-tuned tube as an innovative solution to regulate and suppress these oscillations, focusing on the intricate dynamics of pressure oscillations within the system. Through detailed numerical modeling and analysis, the chapter reveals how the phase-tuned tube influences the oscillation states and phase relationships between different positions within the distribution and phase-tuned tubes. The investigation highlights the periodic variations in pressure oscillations and phase differences, providing a comprehensive understanding of the underlying mechanisms. The findings demonstrate the effectiveness of the phase-tuned tube in achieving oscillation-free operation, offering a promising approach for enhancing the stability and efficiency of cryogenic distribution systems. The chapter also delves into the nonlinear time series method for oscillation state identification, further enriching the analysis and validation of the proposed method.