感度解析法によるタービン翼の最適設計

概要

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Recently, in order to improve power plant thermal efficiency, the turbine blade, which is the most important element of the power plant, has been used in a severe condition where the high loading works. Therefore, for the purpose of increasing plant reliability, we must establish a precise calculation method and optimal design procedure of the blade, taking its specific characteristics into consideration. In this paper, an effective autotuning technique of the blade's natural frequencies is presented by combining sensitivity analysis with nonlinear programming, and its application is shown. In the blade design, many natural frequencies must be tuned between engine order frequencies, satisfying various constrained conditions which come from the requirement of thermal efficiency, manufacturing and so on. The new optimal technique in this paper is very useful in such blade design because the blade profile having the required natural frequencies can be obtained automatically.
社団法人日本機械学会の論文
1991-09-25