| 热声交变流动中浮力效应理论分析 |
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| 引用本文： | 刘秋生,韩君庆,刘荣. 热声交变流动中浮力效应理论分析[J]. 工程热物理学报, 2011, 0(10): 1749-1752 |
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| 作者姓名： | 刘秋生 韩君庆 刘荣 |
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| 作者单位： | 中国科学院微重力重点实验室中国科学院力学研究所; |
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| 基金项目： | 国家自然科学基金资助项目(No.50890182;No.11072249) |
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| 摘 要： | 热声交变流动是热声热机的工作基础,研究交变流动机理有助于人们认识热声热机的工作过程。鉴于前人的理论分析一般没有考虑浮力效应的影响,本文从流体热动力学的角度研究了浮力对流与热声交变流动的耦合规律。基于线性理论方法,给出了考虑浮力项和热对流Rayleigh数的热声线性理论模型,分析了浮力效应对平行交变流动的影响,发现热对流...
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| 关 键 词： | 交变流动 环形效应 浮力效应 热声 线性理论 |
Theoretical Analysis of Buoyancy Effects in Thermoacoustic Oscillating Flow |
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| LIU Qing-Sheng HAN Jun-Qing LIU Rong. Theoretical Analysis of Buoyancy Effects in Thermoacoustic Oscillating Flow[J]. Journal of Engineering Thermophysics, 2011, 0(10): 1749-1752 |
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| Authors: | LIU Qing-Sheng HAN Jun-Qing LIU Rong |
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| Affiliation: | LIU Qing-Sheng HAN Jun-Qing LIU Rong (Key Laboratory of Microgravity/CAS,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China) |
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| Abstract: | Oscillating flow is the base research of thermoacoustic engine.Analyzing oscillating flow mechanism can help us understand the working process of thermoacoustic engine.Former theoretical analysis did not consider buoyancy effects.In present paper,the coupling mechanism of thermoacoustic oscillating flow and natural convection is analyzed theoretically.A thermoacoustic linear theory model considering buoyancy effect(Rayleigh number) is presented and evident effects of natural convection on the 'velocity dist... |
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| Keywords: | oscillating flow annular effect buoyancy effects thermoacoustic linear theory |
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