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In view to increase operating efficiency the modern gas turbine are designed to operate at elevated
temperature which are just few degree the material withstanding temperature. The literature survey reveals
that the accurate thermal analysis technique can improve the life of blade as there is possibility of finding
solutions on their defects. FEA and CFD tools can provide 99 % of accurate results which is very popular
now a days. Combined study using FEA and CFD tools will provide ease for detection of possible defects and
their prevention. As these methods are virtual hence no investment of material. Possible temperature
counters can be obtained by using FEA tools. Also thermal stresses can be calculated. CFD analysis will
provide the flow of hot fluid and can demonstrate behaviour of material under the influence of hot fluid.
This review will help to understand the various problems associated with GT blade. Many outers are
focusing on material defects, thermal stresses and harsh working environment which reduce blade life.
Hence this review will help to study those defects and scope to improvement in blade life.
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