過給機駆動用ラジアル排気タービンの非定常流特性に関する研究 : 高温作動ガスによるタービン非定常流特性

概要

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This paper describes some important results obtained through experiments on a small inward radial gas turbine driven by high temperature pulsating flows. The temperature ranges from atmospheric temperature to 800 K. The waveforms of pulsation were nearly sinusoidal and had various pressure amplitude but fixed frequency (50 Hz). A newly designed reduction device, which consists of planetary gears, helped the turbine to work as nearly as in realistic circumstances. Main results are as follows. Even under the high temperature conditions, the turbine characteristics, such as the mass flow rate and the power output, are the same as those under the low temperature pulsating flow conditions as far as the estimations are performed by using ordinary corrected values taking the temperature into consideration. As to the effect of pulsation, the more the amplitude of pressure increase, the less the mass flow rate through the turbine became at the same expansion ratio. Adding these results, the windage states characteristics of the turbine were made clear through experiments.
社団法人日本機械学会の論文
1999-07-25