Abstract
Liquid crystals have become an accurate and convenient means ofmeasuring surface temperature and heat transfer for the gas turbine andheat transfer research communities. The measurement of surface shear stressusing liquid crystals is finding increasing favour with aerodynamicists anddevelopments in these techniques ensure that liquid crystals will continueto provide key thermal and shear stress data in the future. The increasing useof three-dimensional finite element computational models has allowedindustry to capitalize on the advantages of the full surface datagenerated. The paper reviews the use of these complex materials in researchwith a special emphasis on recent developments in the field. The aim is toprovide the reader with an up to date background in this measurementtechnology and allow the researcher to decide whether liquid crystals wouldbe suitable in specific applications.
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