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空间流场的测量显示,对于气动分析和飞机设计,提供了很方便的有利条件。特别是流场的彩色图象显示,等压分布图非常形象直观,具有很大的应用价值。彩色图象的画面,是由白、青、红、绿、兰、黄、紫、黑八种颜色组成的。流场相对于大气的正负压力都是分别由这八种颜色表示。因此,能分辨十五个等压区间,并且每一种颜色区间所表示的压力范围,可很方便地在±(1～30)毫米水柱之间等值地调节,而且两种颜色的转换误差很小,仅为0.14毫米水柱。根据实验风速的大小和流场的压力变化范围,压力分辨范围为-100～+100毫米水柱。所以,本信号处理系统能够很清晰地定性和定量地显示出流场压力彩色等压分布图。如果使用相应的传感器,如速度、温度等传感器,速度、温度场也能变换为彩色图形。
Measurements of the spatial flow field show very convenient and favorable conditions for aerodynamic analysis and aircraft design. Especially the color image of the flow field shows that the isobaric distribution is very visual and intuitive and has great application value. Color image of the screen is white, green, red, green, blue, yellow, purple, black eight colors. The positive and negative pressures of the flow field relative to the atmosphere are represented by these eight colors respectively. Therefore, fifteen isobaric intervals can be resolved and the pressure range represented by each of the color intervals can be conveniently adjusted equally between ± (1 to 30) mm water column and the conversion error between the two colors Small, only 0.14 mm water column. According to the size of the experimental wind speed and the pressure range of the flow field, the pressure resolution range is -100 ~ +100 mm water column. Therefore, the signal processing system can clearly and quantitatively display the color pressure isobaric profile of the flow field pressure. If you use the corresponding sensor, such as speed, temperature and other sensors, speed, temperature field can also be converted to color graphics.