Abstract
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 severe conditions where high loading is in effect. 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 by combining sensitivity analysis with nonlinear programming is presented, and its application is shown. In the blade design, many natural frequencies must be tuned between engine order frequencies, satisfying various constrained conditions which result from such requirements as thermal efficiency and manufacturing. The new optimal technique in this paper is very useful for such blade design because a blade profile having the required natural frequencies can be obtained automatically.
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Schedule a callMore From: JSME international journal. Ser. C, Dynamics, control, robotics, design and manufacturing
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