羽根なしディフューザの旋回失速時における遠心羽根車の作動状態

概要

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Rotating stall in a vaneless diffuser was studied and predicting equations of rotational speeds of stall cells were presented in a previous paper by the authors. For a prediction of the rotational speeds of cells using the predicting equations, a tangential component of the time-averaged flow velocity at an impeller exit should be known. However, there is no general method for calculating the tangential velocity at the impeller exit under rotating stall of a vaneless diffuser. The difference of impeller performance is not clear between rotating stall and steady flow conditions. In this paper, an operating condition of a centrifugal impeller under rotating stall of a vaneless diffuser is described from measurements of characteristic curves, pressure distributions in the impeller channel and flow conditions near the impeller exit.
一般社団法人日本機械学会の論文
1989-04-25