气-液双作用行波热声发动机的数值模拟

摘要

提出了一种兼具传统热声发动机使用寿命长和斯特林发动机功率密度高等优点的气-液双作用行波热声发动机,将3台或4台热声发动机通过注有液体的U型谐振管连成气-液耦合振荡的环路,每台发动机都能工作在比较理想的行波声场.对无负载情况和外接不同负载情况下3机或4机串联成环路的气-液双作用行波热声发动机进行了模拟计算,同时模拟分析了发动机个别参数不一致时对系统性能产生的影响.%A double-acting traveling-wave thermoacoustic engine with gas-liquid coupling oscillation was proposed, which had both advantage of traditional thermoacoustic engine' s long-life time and Stirling engine' s high power density. Three or four thermoacoustic engines were combined into a loop with U-type liquid resonator and each could work in an ideal traveling-wave sound field. Then, double-acting traveling-wave thermoacoustic engine with gas-liquid coupling oscillation was numerical simulated with loaded and non-loaded conditions. Finally, the influence of system' s parameter inconsistency on thermoacoustic conversion performance was analyzed.