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热声制冷机部件的微热力循环分析

MICRO-THERMODYNAMIC-CYCLE ANALYSIS FOR THERMOACOUSTIC PARTS
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摘要 从热声的角度来分析振荡流体的基本特点,对由黏性造成的横向速度分布和由热波造成的横向导热分布进行了详细的讨论。根椐ωτk的大小将流道内的导热分为3个区域:等温区、迟相区和绝热区,分别对应于等温可逆过程、不可逆过程和绝热可逆过程3个微热力循环。同时对典型热声部件的微热力循环的特点进行了分析,根据它们在热声系统中的不同作用指出它们对应的微热力循环的区域。在热声系统的设计中,应选择合适的运行参数ωτk,以得到其理想的熵波相位,并选择与之相匹配的流道尺寸。 Basic characteristics of oscillating flow are analyzed from thermoacoustic angles.Transverse velocity distribution caused by viscosity and transverse temperature distribution caused by heat wave in a tube are discussed.Heat conduction within flow channel can be classified into three areas,isothermal area,delayed area and adiabatic area.The micro-thermodynamic-cycle areas which thermoacoustic parts work are defined based on their different functions on a thermoacoustic system.This result is helpful to design...
出处 《真空与低温》 2008年第4期197-201,共5页 Vacuum and Cryogenics
基金 国家自然科学基金(批准号59706003)资助
关键词 热声 振荡流体 微热力循环 thermoacoustic oscillating flow Micro-thermodynamic-cycle
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参考文献11

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