ターボ機械
Online ISSN : 1880-2338
Print ISSN : 0385-8839
ISSN-L : 0385-8839
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42 巻, 11 号
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論文
  • 車両過給機用ラジアルタービン入口流路形状のタービン性能への影響
    岩佐 能孝, 馬場 隆弘, 山口 諭
    原稿種別: 論文
    2014 年 42 巻 11 号 p. 727-732
    発行日: 2014年
    公開日: 2017/12/09
    DOIhttps://doi.org/10.11458/tsj.42.11_727
    ジャーナル フリー
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    Demand of two-stage turbocharger is increasing for large engine applications. Generally, these turbo chargers have a curved duct at the inlet or at the outlet. Such curved duct is required to achieve compact designs, however, these sometimes lead to drop in performance. Therefore, for a given mount condition, it is important to design such ducts so that performance reduction is minimized as much as possible. In this paper, the flow pattern of a low-pressure turbine of a two-stage turbocharger is calculated, and performance reduction as well as its cause is discussed. The results show that, for the specific case analyzed, turbine efficiency decreases by 4% due to flowing along the outer side of the curved sector of the duct, however, it is also found impact on turbine wheel performance is small.
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