Abstract
This paper investigates the nonlinear dynamics of a flexible tube in a rotated triangular tube array subjected to two-phase cross-flow, internal flow, and clearance restriction. Considering the effects of internal fluid force and fluidelastic force, we first established a mathematical model of the tube bundles system. Then, based on this model, the vibration responses and bifurcation diagrams for different internal fluid velocity conditions within 20%, 40%, 60%, and 80% void fractions of the two-phase cross-flow were calculated, respectively. The numerical solutions demonstrate that the internal flow has a considerable impact on the bifurcation behavior and nonlinear vibration characteristics of the tube bundles system subjected to two-phase cross-flow and clearance restriction.
Published Version
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