Analysis of Industry-Related Flows by Optical Coherence Tomography—A Review

Abstract

Fig. 3 c) A closer look at the measurement optics. Here U is the real velocity, v is the component of velocity in the direction of the measurement beam, and nf is the refractive index of the medium. Angle α is obtained by calculating first angle δ by applying the Snell’s law of refraction to the two interfaces. On page 46 the paragraph related to Eq. (3) should be: Fig. 3b shows as an example a measurement setup of pipe flow. From Fig. 3c, we get the real axial velocity in the pipe to be