摘要
在短时间脉冲风洞中,对液晶热图实验技术进行了试验。在实验时间为20ms的炮风洞中,获得了清晰的三维高超声速分离流场的热图显示照片。热图照片不仅与油流图谱所显示的特征位置吻合,而且能半定量地显示表面热流的分布。该项技术的研究为国内空气动力学实验研究提供了一项新的方法。
Liquid crystal surface thermography has been applied toaerodynamic measurments in a short duration hypersonic facility(20ms),Clear thermographic images of 3-D shock wave turbulent bound-ery layer interactions induced by a sharp unswept fin were obtainedThe images show surface temperature distributions and their character-istic positions are in good agreement with those of oil-flow patterns.
关键词
液晶
热图
脉冲风洞
流场显示
liqiud crystal
Thermography
impalse wind tunnel
heat flux
flowfield visualization
