Homogenisation method for the dynamic analysis of a complete nuclear steam generator with fluid–structure interaction

Sigrist, Jean‐François; Broc, Daniel

doi:10.1016/j.nucengdes.2008.04.007

Cited by 13 publications

(5 citation statements)

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“…Fluid-structure interaction simulations have been applied to a vast range of applications in recent years. Applications have included parachutes [117,132] and other cloth dynamics [111,129], singing hydrofoils [104], nuclear reactor steam generator tube bundles [113], bridges [88], rotor dynamics [68], shape optimization studies [90], and a vast number of biomedical applications including arterial blood flow [43,48,60,105,128,135,136,153], aortic heart valves [27,25,28,26,142], heart and ventricle [64,81,84,86], lung modeling [144], and aortic aneurysms [35,83,130,149]. Surprisingly, very few of these investigations performed verification and validation studies of their FSI solvers.…”

Section: Fluid-structure Interactionmentioning

confidence: 99%

Fluid-structure interaction and inverse design simulations for highly flexible turbomachinery.

Campbell

2011

The Journal of the Acoustical Society of America

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Highly flexible turbomachinery comprised of soft polymeric impellers, exhibit large, time-dependent deformation when subjected to fluid stresses during operation. The large deformations of the impeller blades and the close proximity of the blades to the pump casing require simulations that consider the interaction of the fluid flow and the structural deformations. This thesis explores the use of fluid-structure interaction (FSI) modeling to perform time-accurate simulations of flexible polymeric turbomachinery and also explores the use of an inverse structural analysis to account for blade deformations over an initial startup period. The purpose of the inverse analysis is to determine the shape of a blade that, when acted on by fluid stresses, will deform into the design shape. A partitioned FSI solver is developed, using the OpenFOAM software and an author-developed finite element (FE) structural solver, to perform FSI simulations of flexible turbomachinery. The flow and structural solvers are tightly coupled using fixed-point iterations to ensure fully converged structural and flow solvers for each solution time step. The solver interface supports disparate flow and structural meshes through interpolation and load mapping algorithms. A water tunnel test of a modified NACA 66 viscoelastic fin is performed at multiple angles of attack to generate validation data for the FSI solver. The validated solver is applied to an expandable impeller pump to simulate time-accurate performance changes that result from impeller elastic and viscoelastic deformation under application of the fluid stresses. An inverse FE structural solver is developed and used to compute inverted structural shapes that account for deformations due to fluid loads so that the structures deform into their design shapes after elastic and viscoelastic deformations

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Section: Fluid-structure Interactionmentioning

confidence: 99%

Fluid-structure interaction and inverse design simulations for highly flexible turbomachinery.

Campbell

2011

The Journal of the Acoustical Society of America

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“…Khalak and Williamson (1999) presented measurements of vortex-induced transverse vibrations of a cylinder. Sigrist and Broc (2008) carried out a dynamic analysis of tube bundles with FSI modeling. Jiang et al (2007) predicted the noise and vibration of hydraulic machinery by using an FSI method.…”

Section: Introductionmentioning

confidence: 99%

3D fluid-structure interaction (FSI) simulation of new type vortex generators in smooth wavy fin-and-elliptical tube heat exchanger

Lotfi

Sundén²,

Wang

2016

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Purpose The purpose of this paper is to investigate the numerical fluid-structure interaction (FSI) framework for the simulations of mechanical behavior of new vortex generators (VGs) in smooth wavy fin-and-elliptical tube (SWFET) heat exchanger using the ANSYS MFX Multi-field® solver. Design/methodology/approach A three-dimensional FSI approach is proposed in this paper to provide better understanding of the performance of the VG structures in SWFET heat exchangers associated with the alloy material properties and geometric factors. The Reynolds-averaged Navier-Stokes equations with shear stress transport turbulence model are applied for modeling of the turbulent flow in SWFET heat exchanger and the linear elastic Cauchy-Navier model is solved for the structural von Mises stress and elastic strain analysis in the VGs region. Findings Parametric studies conducted in the course of this research successfully identified illustrate that the maximum magnitude of von Mises stress and elastic strain occurs at the root of the VGs and depends on geometrical parameters and material types. These results reveal that the titanium alloy VGs shows a slightly higher strength and lower elastic strain compared to the aluminum alloy VGs. Originality/value This paper is one of the first in the literature that provides original information mechanical behavior of a SWFET heat exchanger model with new VGs in the field of FSI coupling technique.

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Section: Introductionmentioning

confidence: 99%

“…Pettigrew 2 studied the vibration of the fuel assembly under internal axial flow and found that it tends to vibrate near its natural frequency and that vibration amplitude increases proportional to the flow velocity to the second or third power. Hassan and Hayder, 3 Sigrist and Broc, 4 Kuehlert et al, 5 Longatte et al, 6 and others have performed extensive research on the flow-induced vibration of steam generators by means of both simulation and experimentation; Bakosi et al, 7 Mohany and Hassan, 8 and Bhattacharya and Yu 9 mainly examined the fuel rod under flow-induced vibration. Recently, Rahman et al 10 analyzed hydraulic force (lift-off and hold-down force) of three types of high-performance annular fuels and found that the hydraulic force acting on the fuels was affected greatly by the configuration of fuels.…”

Section: Introductionmentioning

confidence: 99%

Investigation of hydraulic force of a 1000-MW pressurized water reactor under hypothetical drop accident of core barrel assembly

Jiang

Zhang

et al. 2016

Advances in Mechanical Engineering

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In this study, we conducted a simulation investigation of a hypothetical core barrel assembly drop accident based on the dynamic mesh model. The investigation included three separate circumstances: high-temperature dynamic water, hightemperature still water, and low-temperature still water. Results showed that dynamic parameters (e.g. velocity and resultant force) of the drop assembly in high-temperature dynamic water are smaller than those in still water due to the buffer effect of the flowing water. The velocity and hydraulic force in the dynamic water situation increased quickly at first and then remained stable throughout the remainder of the experiment; due to turbulence effect, the hydraulic force fluctuated slightly, first increased, then decreased, and then reached as stable a level in still water as that in dynamic water. The velocity of the drop assembly showed parabolic growth.

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Homogenisation method for the dynamic analysis of a complete nuclear steam generator with fluid–structure interaction

Cited by 13 publications

References 13 publications

Fluid-structure interaction and inverse design simulations for highly flexible turbomachinery.

Fluid-structure interaction and inverse design simulations for highly flexible turbomachinery.

3D fluid-structure interaction (FSI) simulation of new type vortex generators in smooth wavy fin-and-elliptical tube heat exchanger

Investigation of hydraulic force of a 1000-MW pressurized water reactor under hypothetical drop accident of core barrel assembly

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