Experiments and computations of a loosely supported tube in a rigid bundle subjected to single-phase flow

Piteau, Philippe; Delaune, Xavier; Antunes, José; Borsoi, Laurent

doi:10.1016/j.jfluidstructs.2011.08.007

Cited by 24 publications

(7 citation statements)

References 19 publications

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“…Afterwards, many theoretical models for different conditions were provided in a series of papers by Pettigrew and Gorman [9], Païdoussis [10], and Weaver and Fitzpatrick [11]. Piteau et al [12] recently studied a loosely supported tube in a rigid bundle subjected to single-phase flow through experiments and computations. Yan et al [13] tested the shell side flow-induced vibration of a conical spiral tube array.…”

Section: Introductionmentioning

confidence: 99%

Fluid-Elastic Instability Tests on Parallel Triangular Tube Bundles with Different Mass Ratio Values under Increasing and Decreasing Flow Velocities

Zhang

Jiang

Chen

et al. 2016

Shock and Vibration

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To study the effects of increasing and decreasing flow velocities on the fluid-elastic instability of tube bundles, the responses of an elastically mounted tube in a rigid parallel triangular tube bundle with a pitch-to-diameter ratio of 1.67 were tested in a water tunnel subjected to crossflow. Aluminum and stainless steel tubes were tested, respectively. In the in-line and transverse directions, the amplitudes, power spectrum density functions, response frequencies, added mass coefficients, and other results were obtained and compared. Results show that the nonlinear hysteresis phenomenon occurred in both tube bundle vibrations. When the flow velocity is decreasing, the tubes which have been in the state of fluid-elastic instability can keep on this state for a certain flow velocity range. During this process, the response frequencies of the tubes will decrease. Furthermore, the response frequencies of the aluminum tube can decrease much more than those of the stainless steel tube. The fluid-elastic instability constants fitted for these experiments were obtained from experimental data. A deeper insight into the fluid-elastic instability of tube bundles was also obtained by synthesizing the results. This study is beneficial for designing and operating equipment with tube bundles inside, as well as for further research on the fluid-elastic instability of tube bundles.

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Section: Introductionmentioning

confidence: 99%

Fluid-Elastic Instability Tests on Parallel Triangular Tube Bundles with Different Mass Ratio Values under Increasing and Decreasing Flow Velocities

Zhang

Jiang

Chen

et al. 2016

Shock and Vibration

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show abstract

“…Since this simplification was first introduced, a number of studies have been conducted on this basis, including Austermann and Popp (1995), Mahon and Meskell (2009) and Piteau et al (2012). However, a single flexible tube in a rigid array has not shown consistent behavior in all cases, even for the same array pattern.…”

mentioning

confidence: 99%

A single flexible tube in a rigid array as a model for fluidelastic instability in tube bundles

Khalifa

Weaver

Ziada

2012

Journal of Fluids and Structures

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“…Referring to works carried out by CEA [4], the first mode is predominant in the tube response and the effects of higher modes are almost negligible, thus the fluid elastic force is projected only on the first mode and the other modes are not influenced.…”

Section: Fluid-elastic Forces Parametersmentioning

confidence: 98%

“…( ,, ) = −(̈+ ( )̇+ ( ) ) (6) Therefore, the fluid-elastic effect can be finally modeled as fluid added mass, fluid added damping and fluid added stiffness. These last two coefficients are assumed depending on reduced fluid velocity V r [4].…”

Section: Fluid-elastic Forces Parametersmentioning

confidence: 99%

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Numerical Simulation and Experimental Validation of Gap Supported Tube Subjected to Fluid-Elastic Coupling Forces for Hybrid Characterization Tests

Benmalek

Collet

Foltête

et al. 2013

Volume 1: Development and Characterization of Multifunctional Materials; Modeling, Simulation and Control of Adaptive Systems;

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Steam Generator (SG) tubes are subjected to fluid-elastic coupling forces and impacts against support plates & anti-vibration bars. Understanding their vibrations is crucial not only at the design stage, but also to optimize the SG maintenance policy and to lengthen the SG service life. The aim of our research is to provide a better understanding of the conjugate stabilizing effects of impacts and coupling with fluid-elastic forces. Since fluid-elastic forces are difficult to simulate and expensive to reproduce experimentally, the fluid coupling forces of our numerical model are represented using velocity dependent damping and stiffness matrices, both for the fluid and the tube. Their effect is experimentally reproduced having recourse to active vibration control in the frame of specifically designed “hybrid” experimental tests. In this paper, we present a method for modeling tube vibrations in order to estimate the conjugate effects of the coupling between the fluid elastic forces and impacts. This strategy lowers the costs and avoids the difficulties associated to the case of fluid in the experiments. Our numerical model will be implemented in the active control loop in the next step of the study.

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Experiments and computations of a loosely supported tube in a rigid bundle subjected to single-phase flow

Cited by 24 publications

References 19 publications

Fluid-Elastic Instability Tests on Parallel Triangular Tube Bundles with Different Mass Ratio Values under Increasing and Decreasing Flow Velocities

Fluid-Elastic Instability Tests on Parallel Triangular Tube Bundles with Different Mass Ratio Values under Increasing and Decreasing Flow Velocities

A single flexible tube in a rigid array as a model for fluidelastic instability in tube bundles

Numerical Simulation and Experimental Validation of Gap Supported Tube Subjected to Fluid-Elastic Coupling Forces for Hybrid Characterization Tests

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