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中文摘要：
热声驻波发动机由于内禀的不可逆性而热效率较低，但其系统结构简单和可靠性高的优点使其仍具有一定的应用前景。目前，对高频驻波系统研究较少，搭建了一台高频热声驻波发动机，研究了板叠和谐振管对系统的重要作用，另外，初步探讨了系统热腔内的温度演化过程和稳定振荡时的温度分布特性，这对高频热声驻波发动机实验和数值研究具有指导意义。
英文摘要：
Due to the intrinsic irreversibility, the thermal efficiency of the standing wave thermoacoustic engine is rather low. However, the merits of structure simplicity and high reliability make it a promising engine for some applications. So far, research on high frequency standing -wave thermoacoustic engine is lacking, and we designed and experimentally investigated a high frequency standing wave thermoacoustic engine in terms of stack and resonator. In addition, the paper presents and discusses the temperature evolvement in the hot buffer and its distribution characteristics when the system reaches stable oscillation state. This work might be guidance for further experimental and numerical research of high frequency standing wave thermoacoustic engine.
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