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Temperature and stress analyse of the high pressure turbine blade in the RM12 engine
2001 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The aim of this work is to find the temperature profile in the mid span of the high pressure turbine blade in the RM12 engine. When the temperatures are known connection to thermal stresses is performed. From these simulations the high temperature zones of the blade can be detected, then the internal or external cooling can be changed to minimise these values. ANSYS 5.6 is used for both the temperature and stress analyses. In the temperature analyse the internal cooling channels and the temperatures in the solid are analysed. The heat transfer correlations are based on experimental results. The temperature profile shows that the highest temperatures in the blade are at the leading and trailing edge (pressure side) implying that there are compressible stresses in these zones and tension in the middle of the blade. A sensitive analyse is performed to see which parameters that effects the temperature profile more than others. The simulations show that external parameters such as the heat transfer coefficients and the mixing factors for the film cooling affect the temperature profile most. Two design modifications are performed in this report and they show that the temperatures at the leading edge can decrease but it increases in other parts of the blade. Much more work must be done to see how this decreased and increased temperature actually effects the lifetime of the blade.

Place, publisher, year, edition, pages
Keyword [en]
Technology, Heat Transfer, Turbine blades, Thermal stresses, Blade, cooling, ANSYS
Keyword [sv]
URN: urn:nbn:se:ltu:diva-56791ISRN: LTU-EX--01/332--SELocal ID: d89322a1-6f9c-4381-884f-0199094839d3OAI: diva2:1030178
Subject / course
Student thesis, at least 30 credits
Educational program
Mechanical Engineering, master's level
Validerat; 20101217 (root)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

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