A new criterion for the instability threshold of a square tube bundle subject to an air–water cross-flow

• Published in: Journal of fluids and structures Vol. 122; no. 1; p. 103980
• Main Authors: Lagrange, Romain, Panunzio, Domenico, Piteau, Philippe, Delaune, Xavier, Antunes, Jose
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.10.2023; Elsevier
• Subjects: Cross-flow; Engineering Sciences; Fluid-elastic instability; Instability threshold; Square tube bundle; Two-phase flow; Fluid-elastic instability; Instability threshold; Cross-flow; Square tube bundle; Two-phase flow

In this paper, we investigate the fluid-elastic instability of a square tube bundle subject to two-phase cross-flow. A dimensional analysis is carried out, leading to a new criterion of instability. This criterion establishes a direct link with the instability thresholds in single-phase flows. In pa...