Abstract: A double-pass schlieren system using a combination of lenses and mirrors was designed for non-intrusive visualization and measurements of large-field flows such as internal waves.

• 文章摘要: 为了实现对内波等流场的大视场无干扰竖向显示测量，设计了一种透镜和反射镜结合使用的平面反射双光程形式的纹影系统。