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- W2019353587 abstract "Fir-tree roots are usually adopted for rotor blades of gas turbine. Strictly speaking it should be treated as a three-dimensional problem for temperature field calculation of turbine rotor with fir-tree roots. In this paper, a simplified model is presented for calculating the unstable temperature field of a cooled turbine rotor by finite element method. In the simplified model, an outer radius Rb for calculating has been chosen which is smaller than the radius of the fir-tree root groove’s bottom. And an equivalent heat release coefficient α has been introduced. Thus the calculation can be treated as an axial symmetrical problem and carried out on a microcomputer. The simplified model has been used to calculate the unstable temperature field during starting a rotor. The comparison with the three-dimensional calculated result shows that the simplified model is satisfactory. For example, at 170th sec. after firing the temperature difference at the outer radius Rb is only 6% for the two methods." @default.
- W2019353587 created "2016-06-24" @default.
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- W2019353587 date "1989-06-04" @default.
- W2019353587 modified "2023-09-23" @default.
- W2019353587 title "A Simplified Model for Unstable Temperature Field Calculation of Gas Turbine Rotor" @default.
- W2019353587 doi "https://doi.org/10.1115/89-gt-234" @default.
- W2019353587 hasPublicationYear "1989" @default.
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