A Hybrid Transient Step-Heating Heat Transfer Measurement Technique Using Heater Foils and Liquid-Crystal Thermography
A Hybrid Transient Step-Heating Heat Transfer Measurement Technique Using Heater Foils and Liquid-Crystal Thermography
复制标题
使用加热箔和液晶热成像的混合瞬态步进加热传热测量技术
DOI：
10.1115/1.2910682
复制
发表时间：
1993
影响因子：
--
通讯作者：
T. Sattelmayer
中科院分区：
文献类型：
--
作者：
J. Wolfersdorf;R. Hoecker;T. Sattelmayer
介绍了一种利用加热箔和液晶的瞬态传热技术。其基本思想是一个步进加热技术，消除局部热通量和表面温度在数据减少。允许加热图案的不均匀性，并且不再需要液晶的校准。它们仅用作等温线的指示剂。传热系数是由两个时间测量推导出来的。对平板层流和湍流边界层流动进行了实验研究，验证了该方法的适用性和准确性。参考文献22篇，图7。
A transient heat transfer technique using a heating foil and liquid crystals is described. The basic idea is a step-heating technique, eliminating the local heat flux and the surface temperature during the data reduction. Nonuniformities in the heating pattern are allowed and calibration of the liquid crystals is no longer necessary. They are used as an indicator of an isotherm only. The heat transfer coefficient is deduced from two time measurements. The laminar and turbulent boundary layer flows over a flat plate were tested to verify the applicability and accuracy of the method. 22 refs., 7 figs.