First visualization of temperature fields in liquids at high pressure using thermochromic liquid crystals |
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Authors: | M Pehl F Werner A Delgado |
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Institution: | Technische Universit?t München, Lehrstuhl für Fluidmechanik und Proze?automation, 85350 Freising, Germany, DE
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Abstract: | A first application of encapsulated thermochromic liquid crystals (TLCs) for visualizing temperature fields in pressurized
liquids was studied experimentally. By means of a tempered high-pressure optical cell, investigations were performed in a
wide temperature range and at pressures up to 7000 bar. The measured calibration curves of isochromes in the pressure/temperature
domain as well as photographically documented temperature fields at high pressure are presented and discussed. The results
found illustrate that TLCs provide an efficient instrument for investigating thermofluiddynamical processes even at high pressure.
Received: 13 February 1998/Accepted: 9 December 1999 |
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