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应用窄带瞬态液晶测量技术对放大型层板结构的内壁面(靶面、冲击面、扰流柱面)进行了详细的换热系数测量.由获得内表面换热系数分布来深入分析复杂层板结构内部强化换热机理.实验研究结果表明:应用先进瞬态液晶测量技术能够获得复杂层板结构内部表面的换热系数分布,获得信息量大;层板内表面换热系数随着冲击雷诺数的增大而线性增加;内表面平均换热系数随着通道高度增加而减小.
A detailed measurement of the heat transfer coefficient was carried out on the inner wall surface (target surface, impingement surface and spoiler cylinder) of the enlarged laminate using narrowband transient liquid crystal measurement technique. The complex layer The experimental results show that the heat transfer coefficient distribution on the inner surface of the complex laminar structure can be obtained by using the advanced transient liquid crystal measurement technology and the amount of information obtained is large. The heat transfer coefficient on the inner surface of the laminar plate increases with the impact of Reynolds The number increases linearly and increases; the average heat transfer coefficient of the inner surface decreases with the increase of channel height.