检索结果-内蒙古大学图书馆

Application of computational fluid dynamics and physics informed neural networks in predicting rupture risk of thoracoabdominal aneurysms with fluid-structure interaction analysis

引用

CHINESE JOURNAL OF PHYSICS 2025年 95卷 433-454页

作者： Rehman, M. Abaid Ur Ekici, Ozgur Farooq, M. Asif Talha, Rashid M. Amir, Sadaf Natl Univ Sci & Technol NUST Sch Nat Sci SNS Dept Math Sect H-12 Islamabad 44000 Pakistan Hacettepe Univ Dept Mech Engn TR-06800 Ankara Turkiye

laminar and turbulent flow conditions are explored to reflect the diastolic and systolic phases, respectively.

关键词： Thoracoabdominal aneurysms Physics informed neural networks fluid-structure interaction Asymmetry Thrombus Rupture risk CFD Turbulent flow

来源：评论

学校读者我要写书评

暂无评论

Hydro-acoustic and structural analysis of marine propeller using two-way fluid-structure interaction

引用

JOURNAL OF MARINE SCIENCE AND TECHNOLOGY 2024年第2期29卷 418-431页

作者： Sanaka, Srinivas Prasad Krishna, V. Rama Ramanaiah, K. VR Siddhartha Engn Coll Dept Mech Engn Vijayawada 520007 India Naval Sci & Technol Lab Visakhapatnam 530027 India

The aim of the paper is the prediction of noise generated by the propeller, hydrodynamic performance and the structural behavior of the marine propeller using two-way fluid-structure interaction (FSI) method at advanced velocities of 6, 8, 10, 12 and 14 Knots. ANSYS-Workbench software is used to establish the coupling between the fluid flow and structural solver. The computed hydrodynamic performance parameters of DTMB 4119 propeller at different advanced velocities and Sound Pressure Level (SPL) at advance coefficient of 0.833 are compared with the data available in the literature and found close agreement. The validated computational methodology is applied for the two-way FSI analysis of the marine propeller. Ffowcs William's-Hawkings (FW-H) model is used to predict the noise spectrum over the frequency range of 0-10 kHz in FSI analysis. Large Eddy Simulation (LES) model is used to capture viscous effects. The speed of the propeller is 1000 rpm and advanced velocity is varied for the systematic study carried out. The effect of advanced velocity on the maximum stress induced in the propeller, deformation of the propeller, acoustic characteristics and hydrodynamic performance of the propeller are studied using FSI method.

关键词： Advance ratio Coupled analysis CFD Marine propeller Hydrodynamic parameters fluid-structure interaction

来源：评论

学校读者我要写书评

暂无评论

Pressure coefficient distributions on Hyperbolic Paraboloid membranes by Numerical fluid-structure interaction

引用

LATIN AMERICAN JOURNAL OF SOLIDS AND structureS 2025年第4期22卷

作者： Maldonado-Rios, Ricardo Gamboa-Marrufo, Mauricio Cismasiu, Corneliu Moreno-Herrera, Joel Alberto Autonomous Univ Yucatan Engn Fac Struct Engn Grp Ave Ind Contaminantes S-N Merida 97000 Yucatan Mexico NOVA Sch Sci & Technol CERIS NOVA P-2829516 Caparica Portugal NOVA Sch Sci & Technol Dept Civil Engn P-2829516 Caparica Portugal

Most studies, standards, and codes on wind pressure distributions commonly disregard the influence of the flexibility of structures. Nevertheless, in the case of tensile-membrane structures, their flexibility cannot be ignored, so this study presents the results of numerical simulations evaluating wind pressure coefficient distributions on tensile-membrane structures, accounting for fluid-structure interaction (FSI) choosing the most common geometry: the hyperbolic paraboloid. Various curvature configurations, wind incidence directions, and structural models (both open and enclosed) were analyzed. The FSI solution involves a twoway partitioned simulation between Computational fluid Dynamics, Computational Structural Dynamics and through a coupling system that culminates in the derivation of final pressure coefficient distributions. Results indicate that pressure coefficients obtained for rigid models underestimate those obtained by the FSI methodology, which accounts for deformations altering the interaction between the fluid and membrane.

关键词： Hyperbolic paraboloid fluid-structure interaction computational fluid dynamics pressure coefficients wind analysis tensile membrane structures tensile membrane structures

来源：评论

学校读者我要写书评

暂无评论

Attractors for a fluid-structure interaction problem in a time-dependent phase space

引用

JOURNAL OF FUNCTIONAL ANALYSIS 2024年第2期286卷

作者： Gazzola, Filippo Pata, Vittorino Patriarca, Clara Politecn Milan Dipartimento Matemat Milan Italy Politecn Torino Dipartimento Sci Matemat Turin Italy

This paper is concerned with the long-time dynamics of a fluid-structure interaction problem describing a Poiseuille inflow through a 2D channel containing a rectangular obstacle. Physically, this models the interaction between the wind and the deck of a bridge in a wind tunnel experiment, as time goes to infinity. Due to this interaction, the fluid domain depends on time in an unknown fashion and the problem needs a delicate functional analytic setting. As a result, the solution operator associated to the system acts on a timedependent phase space, and it cannot be described in terms of a semigroup nor of a process. Nonetheless, we are able to extend the notion of global attractor to this particular setting, and prove its existence and regularity. This provides a strong characterization of the asymptotic behavior of the problem. Moreover, when the inflow is sufficiently small, the attractor reduces to the unique stationary solution of the system, corresponding to a perfectly symmetric configuration. (c) 2023 The Author(s). Published by Elsevier Inc. This is an open access article under the CC BY-NC-ND license (http://creativecommons .org /licenses /by -nc -nd /4 .0/).

关键词： Attractors fluid-structure interaction Time-dependent domain

来源：评论

学校读者我要写书评

暂无评论

A 2D stochastic nonlinearly coupled fluid-structure interaction problem in compliant arteries with unrestricted structural displacement

引用

JOURNAL OF DIFFERENTIAL EQUATIONS 2025年 431卷

作者： Tawri, Krutika Univ Calif Berkeley Dept Math Berkeley CA 94720 USA

In this paper, we study a nonlinear fluid-structure interaction (FSI) problem driven by a multiplicative, white-in-time noise. The problem consists of the Navier-Stokes equations describing the flow of an incompressible, viscous fluid in a 2D cylinder interacting with an elastic wall whose elastodynamics is described by membrane/shell equations. The stochastic force is applied both to the fluid equations as a volumetric body force, and to the structure as an external forcing to the deformable fluid boundary. The fluid and the structure are nonlinearly coupled via the kinematic and dynamic conditions assumed at the moving interface, which is a random variable not known a priori. Majority of the existing FSI literature builds on the assumption that the structure can only be deformed radially, neglecting its longitudinal displacement. In this article, we consider the case where the structure is allowed to have vectorial (unrestricted) deformations. (c) 2025 The Author(s). Published by Elsevier Inc. This is an open access article under the CC BY license (http://***/licenses/by/4.0/).

关键词： Stochastic moving boundary problems fluid-structure interaction Martingale solutions

来源：评论

学校读者我要写书评

暂无评论

Vanishing centre-of-mass limit of the 2D-1D corotational Oldroyd-B polymeric fluid-structure interaction problem

引用

NONLINEARITY 2025年第3期38卷 035027-035027页

作者： Mensah, Prince Romeo Tech Univ Clausthal Inst Math Erzstr 1 D-38678 Clausthal Zellerfeld Germany

We consider the Oldroyd-B model for a two-dimensional dilute corotational polymer fluid with centre-of-mass diffusion that is interacting with a one-dimensional viscoelastic shell. We show that any family of strong solutions of the system described above that is parametrized by the centre-of-mass diffusion coefficient converges, as the coefficient goes to zero, to a weak solution of a corotational polymer fluid-structure interaction system without centre-of-mass diffusion but with essentially bounded polymer number density and extra stress tensor. As a consequence, we also obtain a weak-strong uniqueness result that says that the weak solution of the latter is unique in the class of the strong solution of the former as the centre-of-mass diffusion vanishes.

关键词： incompressible Navier-Stokes-Fokker-Planck system Oldroyd-B fluid-structure interaction polymeric fluid corotational fluid

来源：评论

学校读者我要写书评

暂无评论

Analysis of fluid-structure interaction during Fracturing with Supercritical CO_(2)

引用

fluid Dynamics & Materials Processing 2024年第12期20卷 2887-2906页

作者： Jiarui Cheng Yirong Yang Sai Ye Yucheng Luo Bilian Peng Xi’an Key Laboratory of Wellbore Integrity Evaluation Xi’an Shiyou UniversityXi’an710065China CCDC Changqing Downhole Technology Company China National Petroleum CorporationXi’an712042China

During the implementation of CO_(2) fracturing for oil and gas development,the force transfer effect caused by the unsteady flow of high-pressure CO_(2) fluid can lead to forced vibration of the tubing and ensuing structural *** this study,a forced vibration analysis of tubing under CO_(2) fracturing conditions is carried out by taking into account the fluid-structure coupling and related interaction forces by means of the method of characteristics(MOC).The results show that for every 1 m^(3)/min increase in pumping displacement,the fluid flow rate increases up to 3.67 m/*** flow pressure in the pipe tends to be consistent with the pumping pressure at the initial stage and then decreases with an increase in the pump starting *** the pumping pressure increases by 10 MPa,the additional stress in the tubing increases by 11.8%,and the peak value of the additional stress at the bottom of the well is the *** temperature in the tubing grows with well depth,which causes a phase change in CO_(2) due to heat *** this time the pressure in the tubing decreases,the fluid flow rate increases by about 1.12 m/s,and the additional stress grows by about 1.5 MPa.

关键词： Supercritical CO_(2) fracturing fluid-structure interaction method of characteristics(MOC) vibration characteristics

来源：评论

学校读者我要写书评

暂无评论

Analysis of fluid-structure interaction galloping characteristics of high-speed railway catenary positive feeder in stranded convex shape in windy areas

引用

JOURNAL OF THE CHINESE INSTITUTE OF ENGINEERS 2025年第1期48卷 66-80页

作者： Zhao, Shanpeng Zhu, Ziheng Zhang, Haixi Lanzhou Jiaotong Univ Sch Automat & Elect Engn 88 Anning Rd Lanzhou 730070 Peoples R China Lanzhou Jiaotong Univ Rail Transit Elect Automat Engn Lab Gansu Prov Lanzhou Peoples R China

To further clarify the galloping characteristics of the non-iced catenary positive feeder under the influence of the windbreak wall wake, this study constructs a model for the galloping of the Lanzhou-Urumqi high-speed railway catenary positive feeder in windy areas, considering the stranded convex shape based on aerodynamic theory. Using fluid-structure interaction methods, the displacement, lift, and drag coefficients were analyzed in both time and frequency domains. The results indicate that the natural frequency ratio significantly affects the positive feeder at different wind speeds. When horizontal and vertical frequencies are equal, the positive feeder experiences coupled vibration with the maximum galloping amplitude. There are significant differences in galloping amplitude under different degrees of freedom systems, with horizontal motion suppressing vertical galloping. The flow fields of smooth and stranded convex shapes show significant differences at various time points, with the stranded convex shape separating earlier, resulting in a counterclockwise long-axis elliptical trajectory, while the smooth shape shows a clockwise short-axis elliptical trajectory. This indicates that the galloping characteristics of the positive feeder are closely related to its shape, highlighting the advantages of the stranded convex shape in dynamic simulations. This study provides important theoretical support for understanding and preventing the galloping of catenary in windy areas of the Lanzhou-Urumqi high-speed railway.

关键词： Lanzhou-Urumqi high-speed railway galloping characteristics stranded convex shape fluid-structure interaction

来源：评论

学校读者我要写书评

暂无评论

Research on fluid-structure interaction vibration and bandgap properties of periodic composite hydraulic pipes

引用

APPLIED OCEAN RESEARCH 2025年 158卷

作者： Zhou, Fuming Liao, Jian He, Lin Chen, Zongbin Tan, Xiaopeng Liang, Yundong Naval Univ Engn Inst Noise & Vibrat Wuhan 430033 Peoples R China Nation Key Lab Ship Vibrat & Noise Wuhan 430033 Peoples R China

This research incorporates the Bragg scattering mechanism in phononic crystal theory into fluid-structure interaction vibration suppression of hydraulic pipes. Based on steel pipes and hydraulic composite hoses, a periodic composite hydraulic pipe structure is developed, and its vibration and bandgap properties are investigated. Firstly, based on the anisotropic laminated shell theory, fluid dynamic equations and fluid-structure interaction boundary conditions, the one-dimensional fluid-structure interaction axial and transverse vibration models of the hydraulic composite hoses are derived. This model is compatible with the classical fluid-structure interaction model;specifically, when the pipe material is steel, it degenerates into the classical fluid-structure interaction 8-equation model. Secondly, the transfer matrix is constructed using the Laplace-characteristics method to solve the fluid-structure interaction model of the steel and hose-based periodic composite hydraulic pipes. By incorporating the Bloch wave vector theorem, the bandgaps and frequency response functions of the composite pipes are determined. The accuracy of the proposed method is validated by comparing the results with those from finite element simulations. On this basis, the influence of the fluid-structure interaction effect on bandgaps and vibration properties is investigated. Numerical results indicate that in the axial direction, Poisson coupling modulates the pulsation pressure and vibration wave vectors to form new bandgaps, while friction coupling has minimal impact on bandgaps but dissipates high-frequency vibration energy. In the transverse direction, the mass and inertia effects of the fluid shift the vibration bandgaps towards lower frequencies. Finally, the effects of fluid and pipe parameters on axial and transverse vibration bandgaps are examined. This research provides a novel and effective approach for vibration suppression in hydraulic pipes and offers valuable theoretical g

关键词： Hydraulic composite hoses Periodic pipes fluid-structure interaction Vibration bandgaps

来源：评论

学校读者我要写书评

暂无评论

Computational Methods and Representative Cases for fluid-structure interaction in Nuclear Reactor Vessel and Internals

引用

ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2025年第5期50卷 3591-3615页

作者： Veber, Pascal Tornberg, Fredrik Shams, Afaque Siddiqui, Osman K. Ringhals AB Varobacka Sweden Onsala Engn AB Kungsbacka Sweden King Fahd Univ Petr & Minerals KFUPM Dept Mech Engn Dhahran Saudi Arabia KFUPM Interdisciplinary Res Ctr Ind Nucl Energy IRC INE Dhahran Saudi Arabia

Flow-induced vibration (FIV) in nuclear reactor vessels has been extensively studied during the mechanical design of reactor vessels. Many power plants have increased the interest in coupled modern fluid and solid mechanics codes to facilitate the understanding of the phenomena causing damage to components termed fluid-structure interaction (FSI). A better understanding of these structure interactions is critical for enhancing safety, minimizing radiation risks, improving public health and safety, and fostering innovation in the nuclear industry. Furthermore, it supports nuclear energy as a clean alternative to fossil fuels, contributing to the reduction of global carbon emissions and advancing responsible production and consumption. Pressure wave propagation, acoustic resonance, flow-induced turbulence, and fluid-elastic instability are the four types of FSI-coupled systems that are investigated in this work. Different computational methods are presented to simulate FSI problems and should be selected depending on the physical complexity of the problems. One-way FSI where Computational fluid Dynamics (CFD) or thermal-hydraulics results are applied on a structural model is common, while FSI calculations with iterative fluid-structure simulations will be more and more available with the increase in computer capacity and the development of a more cost-effective turbulence model. Most modeling results have resulted in errors in the range of +/- 10% with the experimental data;however, in some cases, the choice of a different boundary condition has been shown to result in up to 30% errors.

关键词： Flow-induced vibration fluid-structure interaction Reactor vessel CFD Thermal-hydraulics

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：