短周期风洞叶栅瞬态换热实验数据处理

对短周期风洞中叶栅瞬态换热实验的几种数据处理方法进行了研究,并确定了各方法的适用条件,对后续的实验具有指导意义.如果实验段流动建立稳态的时间同实验时间相比可以忽略,则传热系数可以按常数处理,否则应计算传热系数随时间变化的曲线;在叶片导热满足一维半无限大假设的条件下,脉冲响应法具有高效、快速的特点;直接进行二维非稳态热分...

Data processing of blade's transient heat transfer experiment in short duration wind tunnel

Four data processing methods of blade's transient heat transfer experiment in short duration wind tunnel were studied in this paper,and the applicability of the methods were determined,showing guiding significance for the future experiments.If the time period of establishing steady flow in test section is negligible compared to the experimental time,the heat transfer coefficient can be treated as a constant,otherwise varying heat transfer coefficient curve versus time should be considered.The impulse respon...