Fluid-induced rotordynamic forces produced by the fluid in the leakage passage surrounding the shroud of a pump are known to contribute substantially to the potential excitation forces acting on the rotor. In this article, rotordynamic forces acting on a conical shroud are calculated based on the simplest bulk-flow model. Semi-analytical solutions are presented under a few simplifying assumptions as follows, (1) unsteady wall shear stress is neglected, (2) no leakage flow, and (3) steady tangential velocity is forced vortex distribution. The results can simulate, however, fairly well with the previous experimental results qualitatively. It has worth to elucidate the fundamental mechanism of rotordynamic forces acting on a conical shroud.
内容記述
形態: カラー図版あり
内容記述（英）
Physical characteristics: Original contains color illustrations
単純化したバルクフローモデルによるふれまわり運動する円錐物体に作用するロータダイナミック流体力
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