A wavelet-based optical flow analysis (wOFA) method for processing background-oriented
schlieren (BOS) images is presented and demonstrated on synthetic and experimental data …

A compact focusing schlieren system is presented that eliminates the need for a separate
source and cutoff grid. Light is projected through a grid ruling and onto a background, where …

This paper presents the design, development, and experimental demonstration of a
tomographic background-oriented schlieren (BOS) facility tailored for investigating buoyancy …

Three-dimensional background-oriented schlieren (3D-BOS) is an effective method for
reconstructing 3D density fields from optically measured data, but it has limitations in …

A background-oriented schlieren (BOS) system is developed with two benefits over
traditional BOS systems. First, the dot pattern required for BOS is projected onto a …

The implementation of a self-aligned focusing schlieren (SAFS) system at two cryogenic
wind tunnels at NASA Langley Research Center is discussed. Risk-reduction testing of the …

View Video Presentation: https://doi. org/10.2514/6.2022-3475. vid This paper details efforts
by researchers at NASA Langley Research Center to prepare for an upcoming high-speed …

A particle tracking velocimetry (PTV) system is demonstrated that eliminates the need for
expensive lasers and cameras, and encodes the particle tracks with a known intensity …