文中重点讨论了管壳式换热器管束中的流体弹性不稳定性。

In this paper the authors focus to discuss the fluidelastic instability in tube arrays of heat exchangers.

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随着流体弹性的增加，在收缩孔道中产生了涡流，涡流的强度与弹性的大小成正比。

With the increasing of elasticity of fluid, the turbulence in shrink hole comes into being, whose intensity is in direct proportion to elasticity.

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针对发生流体弹性不稳定现象时的临界流速；不同螺旋半径上相邻管的相互影响；同一螺旋半径上、下游管的相互影响等问题作了讨论。

The problem such as the critical flow velocity at which fluid elastic instability phenomenon begin to occur, the reciprocal action on neighboring tubes in different helical radius, and that.

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