Non intrusive methods for temperature measurements in liquid zones in microgravitj environments
Abstract
A nonintrusive method for determining the surface temperature of liquid samples is developed using a thermograph to collect the infrared radiations emitted by the surface. This system is found to have numerous advantages since it supplies a thermal picture of the surface of the object with a sufficient accuracy of time, space, and temperature. A computerized system designed for ground experiments has been developed for use in data acquisition and elaboration, and it is proposed that this system can be used in space by introducing a few modifications. The bulk temperature of two-dimensional transparent liquid samples is evaluated from the distribution of the index of refraction using common fluid-dynamics methods. A system is developed that is able to sequentially take shadowgraphs, Schlieren records, and differential interferograms.
- Publication:
-
Paris International Astronautical Federation Congress
- Pub Date:
- September 1982
- Bibcode:
- 1982pari.iafcZ....M
- Keywords:
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- Infrared Radiation;
- Liquid Surfaces;
- Reduced Gravity;
- Spaceborne Experiments;
- Surface Temperature;
- Temperature Measurement;
- Aerospace Environments;
- Computer Techniques;
- Data Acquisition;
- Space Commercialization;
- Spacecraft Instrumentation