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STUDY ON VIBRATION AND THERMAL EXPANSION OF HEATING FURNACE MANIFOLD BASED ON fluid-structure interaction METHOD

HEAT TRANSFER RESEARCH 2023年第10期54卷 19-36页

作者： Zhang, Jinya Tan, Zheng Hu, Wei Wang, Ke Zhang, Yongxue China Univ Petr Coll Mech & Transportat Engn 18 Fuxue Rd Beijing 102249 Peoples R China

In the petrochemical industry, the manifolds are usually adopted as the distributor of the heating furnace. The structure of the manifold plays a crucial role in the safe operation of the heating furnace. For the straight tube structure and fishbone structure of the manifold, thermal expansion calculation was carried out in this paper. The expansion amount of each branch pipe was obtained, and the maximum expansion amount of the branch pipe was 91.8% of the reserved size. The accuracy of the design of the branch pipe wall clearance allowance was verified. Numerical simulations of the fluid-structure interaction were carried out for both structures, which showed that the two structures have similar deformation and frequency in terms of overall structural vibration. However, in the branch vibration, the stress and vibration frequency of the fishbone branch increase by 12.6% and 25.3%, respectively, compared to the straight tube branch, which is caused by the presence of large vortices in the branch of the fishbone structure. Finally, modal analyses were performed for both structures, and the results can be used to estimate whether the vibration frequencies of the two structures avoid the natural frequencies.

关键词： heating furnace manifold fluid-structure interaction vibration

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Dynamic Characterization and Parametric Optimization of Secondary Cushioned Pump Valves in Drilling Systems: A 3D Transient fluid-structure interaction Study

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APPLIED SCIENCES-BASEL 2025年第10期15卷 5431-5431页

作者： Wu, Yi Hou, Yongjun Southwest Petr Univ Sch Mech Engn Chengdu 610500 Peoples R China Panzhihua Univ Sch Intelligent Mfg Chengdu 617000 Peoples R China

The dynamic response of pump valve motion directly influences the volumetric efficiency of drilling pumps and serves as a critical factor in performance enhancement. This study presents a coupled fluid-structure interaction (FSI) analysis of a novel secondary cushioned pump valve for drilling systems. A validated 3D transient numerical model, integrating piston-valve kinematic coupling and clearance threshold modeling, was developed to resolve the dynamic interactions between reciprocating mechanisms and turbulent flow fields. The methodology addresses critical limitations in conventional valve closure simulations by incorporating a geometrically adaptive mesh refinement strategy while maintaining computational stability. Transient velocity profiles confirm complete sealing integrity with near-zero leakage (<0.01 m/s), while a 39.3 MPa inter-pipeline pressure differential induces 16% higher jet velocities in suction valves compared to discharge counterparts. The secondary cushioned valve design reduces closure hysteresis by 22%, enhancing volumetric efficiency under rated conditions. Parametric studies reveal structural dominance, with increases in cylindrical spring stiffness lowering discharge valve lift by 7.2% and velocity amplitude by 2.74%, while wave spring optimization (24% stiffness enhancement) eliminates pressure decay and reduces perturbations by 90%. Operational sensitivity analysis demonstrates stroke frequency as a critical failure determinant: elevating speed from 90 to 120 rpm amplifies suction valve peak velocity by 59.87% and initial closing shock by 129.07%. Transient flow simulations validate configuration-dependent performance, showing 6.3 +/- 0.1% flow rate deviations from theoretical predictions (Qt_max = 40.0316 kg/s) due to kinematic hysteresis. This study establishes spring parameter modulation as a key strategy for balancing flow stability and mitigating cushioning-induced oscillations. These findings provide actionable insights for optim

关键词： secondary cushioned pump valve 3D transient model fluid-structure interaction dynamic characteristics parametric analysis performance optimization

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Two-way fluid-structure interaction for longitudinal vibration of a loaded elastic rod within a multiphase fluid flow

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JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING 2023年第11期45卷 1-17页

作者： Tarmigh, Mehrnoosh Behbahani-Nejad, Morteza Hajidavalloo, Ebrahim Shahid Chamran Univ Ahvaz Fac Engn Dept Mech Engn Ahvaz *** Iran

This paper presents a novel approach for simulating the interaction of long elastic rod strings and the corresponding fluid flow around in sucker rod pump systems. The governing equations of transient multiphase fluid flow are coupled with those of the rod string deformation to improve the numerical analysis of sucker rod pump behavior. For the first time, the transient water-oil-gas multiphase fluid flow containing dissolved gas is related to the rod cyclic loads by the proposed numerical simulation. The derived mathematical model incorporates the dynamics of the rod string and the multiphase fluid flow. Downhole loading of the rod is applied based on the transient pressures of the moving gas-liquid flow in the annular space and the barrel under the plunger, considering different modes of pump operation. A two-way algorithm, for fluid and solid zones, is developed to enhance the performance of the current simulation, and to reduce the complexity of solving process. Several test cases have been analyzed using the proposed simulation method. The obtained results show a good agreement when they are compared and validated with the available numerical and experimental results.

关键词： fluid-structure interaction Elastic rod Multiphase fluid Rod pump Gas-liquid flow

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Heat transfer mechanism in idealized healthy and diseased aortas using fluid-structure interaction method

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BIOMECHANICS AND MODELING IN MECHANOBIOLOGY 2023年第6期22卷 1953-1964页

作者： Qiao, Yonghui Luo, Kun Fan, Jianren Zhejiang Univ State Key Lab Clean Energy Utilizat 38 Zheda Rd Hangzhou 310027 Peoples R China Zhejiang Univ Shanghai Inst Adv Study Shanghai Peoples R China

The heat transfer mechanism inside the human aorta may be related to the physiological function and lesion formation of the aortic wall. The objective of this study was to acquire the temperature distribution in the three-dimensional idealized aorta. An idealized healthy aortic geometry and three representative diseased aortas: aortic aneurysm, coarctation of the aorta, and aortic dissection were constructed. Advanced fluid-structure interaction (FSI) computational framework was applied to predict the aortic temperature distribution. The movement of the aortic root due to the heartbeat was also considered. The displacement distribution of the aortic vessel wall was consistent with clinical observation. The lesser curvature of the aortic arch, aneurysm body, coarctation region, and false lumen were all exposed to relatively high temperatures (over 310.006 K). We found that the rigid wall assumption slightly underestimated the magnitude of the whole aortic wall-averaged temperature while the changing trend and local temperature were like the results of the FSI method. Besides, the wall-averaged temperature would increase and the temperature inflection point would advance when the aortic vessel wall was loaded with a high heat flux. This pilot study revealed the aortic heat transfer mechanism and temperature distribution, and the findings may help to understand the physiological characteristics of the aortic vessel wall.

关键词： Computational hemodynamics Heat transfer Temperature distribution fluid-structure interaction Wall heat flux

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NUMERICAL SIMULATION STUDY OF THE fluid-structure interaction OF THE ARTERY UNDER PERIODIC EXTERNAL FORCING OF MASSAGE

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JOURNAL OF APPLIED MECHANICS AND TECHNICAL PHYSICS 2023年第2期64卷 183-189页

作者： Xie, Y. Q. Li, M. L. Li, L. P. Fuzhou Univ Sch Mech Engn & Automat Fuzhou Fujian Peoples R China

The impact of vibrating manipulation on arterial hemodynamics and mechanical properties is explored by using the finite element method for the fluid-structure interaction. Numerical simulation results show that massage greatly changes the flow behavior of blood within the artery. Under the massage manipulation, the mean blood flow increases by more than 5.34% at a frequency of 2f(0) and by smaller values at frequencies of f(0) and 4f(0). The blood flow has obvious disorder characteristics and an obvious wall shear stress concentration in the mixed flow area. The von Mises stress of the artery wall increases, reaching a peak value at the maximum deformation.

关键词： massage vibrating manipulation artery hemodynamics fluid-structure interaction

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Multiphysics mode synthesis of fluid-structure interaction with free surface

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ENGINEERING WITH COMPUTERS 2023年第4期39卷 2889-2904页

作者： Lee, Kang-Heon Hagos, Robel Weldebrhan Chang, Seongmin Kim, Jin-Gyun Korea Atom Energy Res Inst SMART Reactor Design Div 169-84 Gwahak Ro Daejeon 34133 South Korea Kumoh Natl Inst Technol Dept Mech Engn Daehak Ro 61 Gumi 39177 Gyeongbuk South Korea Kumoh Natl Inst Technol Dept Mech Design Engn Daehak Ro 61 Gumi 39177 Gyeongbuk South Korea Kyung Hee Univ Dept Mech Engn Integrated Engn 1732 Deogyeong Daero Yongin 17104 South Korea

A new component mode synthesis (CMS) is introduced for reduced-order modeling of fluid-structure interaction (FSI) with a free surface. The components imply parts of structures in the CMS method of conventional structural vibration, but they are mono-physics domains in multiphysics problems. Therefore, unlike the original CMS, the interface constraint modes for multiphysics need to be newly defined to reflect the interaction between different physics, which is realized by a sequential model reduction scheme, which is known as multiphysics mode synthesis (MMS). This study addresses a widely used asymmetric (u, p) formulation that comprises structural displacement (u) and fluid pressure (p) including free surface and interior fluid. In carrying out the proposed sequential MMS, the structural part is first reduced, and then, a newly refined coupling matrix including structural modal effects is added to the fluid matrices. The fluid part is then reduced with the updated matrices. Consequently, accuracy improvement of the reduced matrices is achieved while preserving the strongly coupled effect in the proposed MMS, and the numerical instabilities in the model reduction process are alleviated. Better computational efficiency of the reduction process is also achieved by ignoring the higher order coupling terms that have numerically less effect. The performance of the proposed MMS is illustrated through numerical examples.

关键词： fluid-structure interaction Reduced-order modeling Component mode synthesis Multiphysics mode synthesis Free surface

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Influence of fluid-structure interaction on Seismic Performance Improvement of Historical Masonry Aqueducts

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INTERNATIONAL JOURNAL OF ARCHITECTURAL HERITAGE 2023年第3期17卷 472-485页

作者： Bayraktar, Alemdar Hokelekli, Emin Akkose, Mehmet Karadeniz Tech Univ Dept Civil Engn Trabzon Turkey Bartin Univ Dept Civil Engn Bartin Turkey

Historical masonry aqueducts were constructed to convey water over rivers, valleys, etc. Many of them have deteriorated due to different effects and may need to be repaired or strengthened to increase their load carrying capacities. Historical aqueducts are invaluable cultural heritage, and they require particular attention and appropriate seismic strengthening techniques including minimal intervention, better workability and reduced cost. The present study proposes filling the canal with water to improve structural seismic performance of historical masonry aqueducts. The influence of fluid-structure interaction in seismic performance improvement of historical masonry aqueducts is numerically investigated in this study. Three-dimensional (3D) finite element models of an aqueduct including without and with fluid-structure interaction are created using the coupled acoustic fluid-structure (CAS) approach. Concrete Damage Plasticity (CDP) material model adjusted to masonry units and ground motion records matched to site-dependent are utilized in the nonlinear seismic analyses. Seismic performances of the aqueduct models with and without fluid-structure interaction for the only-transverse, combined transverse and longitudinal, and combined transverse and longitudinal and vertical component cases are evaluated and compared with each other.

关键词： Earthquake response fluid-structure interaction masonry aqueducts masonry arches nonlinear seismic analysis strengthening techniques

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fluid-structure interaction analysis of the return pipeline in the high-pressure and large-flow-rate hydraulic power system

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PROGRESS IN COMPUTATIONAL fluid DYNAMICS 2021年第1期21卷 38-51页

作者： Sang, Yong Liu, Pengkun Wang, Xudong Sun, Weiqi Zhao, Jianlong Dalian Univ Technol Sch Mech Engn Linggong Rd 2 Dalian 116024 Peoples R China

This paper aims to investigate the dynamic characteristic of the return pipeline in the high-pressure and large-flow-rate hydraulic power system. First, the geometry model of the pipeline is established, and a one-way coupling fluid structure method is introduced. The modal analyses with empty and filled pipelines are performed and compared. Then, the pipeline resonance phenomenon is investigated, and the response frequency is achieved by the fast Fourier transformation (FFT) analysis, the results are inconsistent with the experiments. Besides, the dynamic response of the pipeline is simulated. Dynamic mesh and user define function (UDF) are adopted, and the pipeline vibration and water hammer phenomenon are observed. Finally, the dynamic characteristics of the pipeline under different fluid velocities and wall thickness are investigated. The results show that the pipeline valve-induced vibration cannot be lightened by reducing the fluid inlet velocity but can be significantly mitigated by increasing the wall thickness.

关键词： fluid-structure interaction FSI pipeline vibration coupling water hammer sliding valve

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A semi-implicit finite volume scheme for a simplified hydrostatic model for fluid-structure interaction

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INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN fluidS 2023年第1期95卷 107-142页

作者： Brutto, Cristian Dumbser, Michael Univ Trento Lab Appl Math Via Mesiano 77 I-38123 Trento TN Italy

Simulating fluid-structure interaction problems usually requires a considerable computational effort. In this article, a novel semi-implicit finite volume scheme is developed for the coupled solution of free surface shallow water flow and the movement of one or more floating rigid structures. The model is well-suited for geophysical flows, as it is based on the hydrostatic pressure assumption and the shallow water equations. The coupling is achieved via a nonlinear volume function in the mass conservation equation that depends on the coordinates of the floating structures. Furthermore, the nonlinear volume function allows for the simultaneous existence of wet, dry and pressurized cells in the computational domain. The resulting mildly nonlinear pressure system is solved using a nested Newton method. The accuracy of the volume computation is improved by using a subgrid, and time accuracy is increased via the application of the theta method. Additionally, mass is always conserved to machine precision. At each time step, the volume function is updated in each cell according to the position of the floating objects, whose dynamics is computed by solving a set of ordinary differential equations for their six degrees of freedom. The simulated moving objects may for example represent ships, and the forces considered here are simply gravity and the hydrostatic pressure on the hull. For a set of test cases, the model has been applied and compared with available exact solutions to verify the correctness and accuracy of the proposed algorithm. The model is able to treat fluid-structure interaction in the context of hydrostatic geophysical free surface flows in an efficient and flexible way, and the employed nested Newton method rapidly converges to a solution. The proposed algorithm may be useful for hydraulic engineering, such as for the simulation of ships moving in inland waterways and coastal regions.

关键词： fluid-structure interaction pressurized flow rigid body motion semi-implicit finite volume scheme subgrid wetting and drying

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fluid-structure interaction computational analysis and experiments of tsunami bore forces on coastal bridges

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INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & fluid FLOW 2021年第5期31卷 1373-1395页

作者： Mazinani, Iman Sarafraz, Mohammad Mohsen Ismail, Zubaidah Hashim, Ahmad Mustafa Safaei, Mohammad Reza Wongwises, Somchai Univ Malaya Dept Civil Engn Kuala Lumpur Malaysia Univ Adelaide Sch Mech Engn Adelaide SA Australia Univ Teknol Petronas Dept Civil & Environm Engn Seri Iskandar Perak Malaysia King Abdulaziz Univ Dept Mech Engn Fac Engn Jeddah Saudi Arabia China Med Univ Dept Med Res China Med Univ Hosp Taichung Taiwan King Mongkuts Univ Technol Thonburi KMUTT Dept Mech Engn Fac Engn Bangkok Thailand Natl Sci & Technol Dev Agcy NSTDA Pathum Thani Thailand

Purpose Two disastrous Tsunamis, one on the west coast of Sumatra Island, Indonesia, in 2004 and another in North East Japan in 2011, had seriously destroyed a large number of bridges. Thus, experimental tests in a wave flume and a fluid structure interaction (FSI) analysis were constructed to gain insight into tsunami bore force on coastal bridges. Design/methodology/approach Various wave heights and shallow water were used in the experiments and computational process. A 1:40 scaled concrete bridge model was placed in mild beach profile similar to a 24 x 1.5 x 2 m wave flume for the experimental investigation. An Arbitrary Lagrange Euler formulation for the propagation of tsunami solitary and bore waves by an FSI package of LS-DYNA on high-performance computing system was used to evaluate the experimental results. Findings The excellent agreement between experiments and computational simulation is shown in results. The results showed that the fully coupled FSI models could capture the tsunami wave force accurately for all ranges of wave heights and shallow depths. The effects of the overturning moment, horizontal, uplift and impact forces on a pier and deck of the bridge were evaluated in this research. Originality/value Photos and videos captured during the Indian Ocean tsunami in 2004 and the 2011 Japan tsunami showed solitary tsunami waves breaking offshore, along with an extremely turbulent tsunami-induced bore propagating toward shore with significantly higher velocity. Consequently, the outcomes of this current experimental and numerical study are highly relevant to the evaluation of tsunami bore forces on the coastal, over sea or river bridges. These experiments assessed tsunami wave forces on deck pier showing the complete response of the coastal bridge over water.

关键词： fluid-structure interaction Tsunami Arbitrary Lagrange Euler Coastal bridge Bore forces

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