Instantaneous two-dimensional gas concentration measurements by light scattering
Abstract
A light scattering technique which makes it possible to map out the instantaneous concentration field at 10,000 points in a thin sheet intersecting a nonreacting turbulent flow is described. The concentration is inferred from the intensity of the Lorenz/Mie scattered radiation from a seeded flow. The signal is detected by a computer-controlled low-light-level TV camera and the resulting data have the advantage of being both quantitative and visually interpretable. The technique can be modified to obtain temporal as well as spatial information. In addition, the use of other scattering mechanisms for similar measurements is discussed.
- Publication:
-
American Institute of Aeronautics and Astronautics
- Pub Date:
- July 1980
- Bibcode:
- 1980fpdy.confQ....L
- Keywords:
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- Concentration (Composition);
- Flow Distribution;
- Gas Flow;
- Light Scattering;
- Scatterometers;
- Turbulent Flow;
- Two Dimensional Flow;
- Digital Data;
- Mie Scattering;
- Numerical Control;
- Spatial Distribution;
- Television Cameras;
- Instrumentation and Photography