针对5 kW碟式斯特林发电装置的圆柱形腔式吸热/储热腔结构,采用数值模拟的方法研究了当吸热腔内以高密度聚焦太阳辐射为热源时吸热腔内壁辐射热流密度和温度分布规律;对比了开口型、风裙型和孔板型3种入光孔形式的吸热/储热腔的辐射场、温度场和周围高温空气自然对流流场分布特征.结果表明,孔板型吸热腔内壁温度不仅比开口型和风裙型的高400～700 K,而且沿高度方向温差仅为另两种结构的1/4,温度分布更均匀,结构较好.
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