Random excitation of heat exchangertubes by cross-flows

Axisa, F.; Antunes, José; Villard, B.

doi:10.1016/s0889-9746(05)80018-0

Cited by 99 publications

(57 citation statements)

References 4 publications

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“…These flow induced oscillations may dammage the tubes (cf. (Axisa et al, 1990)), especially when the vortex shedding frequency is close to the tubes' resonance frequency.…”

Section: Discussionmentioning

confidence: 99%

Numerical simulation of the transient flow behaviour in chemical reactors using a penalisation method

Schneider

2005

Computers & Fluids

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“…These flow induced oscillations may dammage the tubes (cf. (Axisa et al, 1990)), especially when the vortex shedding frequency is close to the tubes' resonance frequency.…”

Section: Discussionmentioning

confidence: 99%

Numerical simulation of the transient flow behaviour in chemical reactors using a penalisation method

Schneider

2005

Computers & Fluids

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“…대표적인 것이 Blevins [1] 의 연구이며 Taylor [2] 와 Chen [3] 의 연 구를 검증하며 유동 유발 진동에 대한 무차원 PSD (Power Spectrrum Density) 함수를 정리한 연구가 Axisa [4] 에 의해 이루어 졌다. 이러한 실험적 연구에서 도출한 무차원 PSD함수는 다음과 같이 정의하였다.…”

Section: 단일 휜튜브에서 양력과 항력의 Psd 특성unclassified

“…Fig. 5에는 Chen [3] 과 Taylor [2] 의 실험 결과를 정리하여 Axisa [4] 가 도출한 실험식인 아래 식 (6)을 이용하였다. 그리고 Blevins [1] 가 실험에서 사용한 12개 열 원관에서의 양력 변동 PSD도 함께 나타내었다.…”

Section: 단일 휜튜브에서 양력과 항력의 Psd 특성unclassified

“…Taylor (2) 는 하나의 원관과 인접한 곳에 반 원관을 좌우에 각 각 한 개씩 설치하고 유체는 물을 사용하여 원관에 작 용하는 힘을 측정하여 원관의 유동 유발 진동을 측 정하여 특성을 분석하였다. Chen (3) 은 사각배열의 원 관에서 유동 유발 진동 특성을 연구하였고 Axisa (4) 는 여러 관련 논문의 유동 유발 진동 특성 실험 결과 들에 대하여 검증 실험을 통해 유동 유발 진동에 대 한 일반화된 PSD(Power Spectral Density) 함수를 정리하였다. 또한 Paul [7] 에 의해 전열관군에서 난류 유동에 관한 실험과 전산유체해석 연구를 통해 전열 관군의 난류 특성에 관한 연구도 이루어지고 있다.…”

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The Power Spectral Density Characteristics of Lift and Drag Fluctuation of Fin Tube in a Heat Recovery Steam Generator

Ha¹,

Lee²

2016

Journal of the Korean Institute of Gas

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-Heat exchanger tube array in a heat recovery steam generator is exposed to the hot exhaust gas flow and it could cause the flow induced vibration, which could damage the heat exchanger tube array. It is needed for the structural safe operation of the heat exchanger to establish the characteristics of flow induced vibration in the tube array. The researches for the flow induced vibration of typical heat exchangers have been conducted by using single cicular tube or circular tube array and the nondimensional PSD(Power Spectral Density) function with the Strouhal number, fD/U, had been derived by experimental method. From the present study, the basis for the application of flow induced vibration to the heat recovery steam generator tube array would be prepared. For the previous mentioned purpose, the present CFD analysis introduced a single fin tube and calculated with the unsteady laminar flow over the single fin tube. The characteristics of vortex shedding and lift and drag fluctuation over the fin tube was investigated. The derived nondimensional lift PSD was compared with the results of the previous experimental studies and the characteristics of lift and drag PSD over a single fin tube was established from the present CFD study.

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“…Particularly, tube bundle systems in the steam generator part are prone to fretting-wear or even breaking, mainly due to transverse flow-induced vibration problems [4,7,8,13,18,25,23,24]. But, as well as experiments, numerical simulations of fluid-structure interactions in a tube bundle system remain very costly [5,15,28] : in order to give a relevant description of the flow and of the structure displacements, it is necessary to construct a system with a large number of degrees of freedom.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of Tube-Bundle Flow-Induced Vibrations With Multiphase-Pod Approach

Pomarede¹,

Liberge²,

Hamdouni³

et al. 2014

Proceedings of 10th World Congress on Computational Mechanics

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Abstract. Fluid-Structure Interactions are present in a large number of systems of nuclear power plants and nuclear on-board stoke-holds. Particularly in steam generators, where tube bundles are submitted to cross-flow which can lead to structure vibrations. We know that numerical studies of such a complex mechanism is very costly, that is why we propose the use of reduced-order methods in order to reduce calculation times and to make easier parametric studies for such problems. We use the multiphase-POD approach, which is an adaptation of the classical POD approach to the case of a moving structure in a flow, considering the whole system (fluid and structure) as a multiphase domain. We are interested in the case of large displacements of a structure moving in a fluid, in order to observe the ability of the multiphase-POD technique to give a satisfying solution reconstruction. We obtain very interesting results for the case of a single circular cylinder in cross-flow (lock-in phenomenon). Then we present the application of the method to a case of confined cylinders in large displacements too. Here again, results are encouraging. An on-going work consist in going further testing parametric studies with POD-Galerkin approach and with POD basis interpolation. A future work will consist in applications to fluid-structure interactions.

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Random excitation of heat exchangertubes by cross-flows

Cited by 99 publications

References 4 publications

Numerical simulation of the transient flow behaviour in chemical reactors using a penalisation method

Numerical simulation of the transient flow behaviour in chemical reactors using a penalisation method

The Power Spectral Density Characteristics of Lift and Drag Fluctuation of Fin Tube in a Heat Recovery Steam Generator

Numerical Study of Tube-Bundle Flow-Induced Vibrations With Multiphase-Pod Approach

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