On analysis of fluidelastic instability in air-water mixture

Journal Article · Wed May 01 04:00:00 EDT 1996 · Journal of Pressure Vessel Technology

DOI:https://doi.org/10.1115/1.2842179· OSTI ID:231031

Marn, J ^[1]; Catton, I ^[2]

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1. Jozek Stefan Inst., Ljubljana (Slovenia). Reactor Engineering Div.
2. Univ. of California, Los Angeles, CA (United States). Mechanical, Aerospace and Nuclear Engineering Dept.

Cross-flow-induced vibrations are important phenomena in the power generation industry as they may severely damage the heat exchanger tubes due to violent oscillations and clashing. The fluidelastic instability was identified as the main driving force behind the vibrations and is highly dependent on the flow regime (single-phase versus two-phase flow). The vorticity formulation has been shown in the past to sufficiently describe the phenomena of cross-flow-induced vibrations in cylindrical arrays. This paper attempts to use the existing, well-established equations (see Bottoni and Sengpiel, 1992) and compares the results of a fluidelastic instability of an air-water mixture to available experimental data. The proposed problem is solved using finite differences by discretizing the computational domain and assuming the initial positions of the tubes.

• Sponsoring Organization: USDOE
• OSTI ID: 231031
• Journal Information: Journal of Pressure Vessel Technology, Journal Name: Journal of Pressure Vessel Technology Journal Issue: 2 Vol. 118; ISSN JPVTAS; ISSN 0094-9930
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
22 GENERAL STUDIES OF NUCLEAR REACTORS
COMPARATIVE EVALUATIONS
DATA COVARIANCES
FINITE DIFFERENCE METHOD
HEAT EXCHANGERS
MECHANICAL VIBRATIONS
POWER PLANTS
THEORETICAL DATA
TWO-PHASE FLOW