Engineering Analysis with Boundary Elements最新文献_第7页

Sphere elements in the BEM for the analysis of elastic bodies with spherical voids or inclusions 边界元法中用于分析具有球形空隙或夹杂的弹性体的球面元

IF 3.3 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2024-12-06 DOI: 10.1016/j.enganabound.2024.106057

Yong-Tong Zheng, Yijun Liu, Xiao-Wei Gao, Wei-Zhe Feng

引用次数: 0

Numerical study of flow-induced noise response of lightweight composite sandwich sail based on the boundary element method 基于边界元法的轻质复合材料夹层帆流致噪声响应数值研究

IF 3.3 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2024-12-05 DOI: 10.1016/j.enganabound.2024.106059

Peng Yin, Xu-Chang Liu, Jin-Shui Yang, Yao-Yao Xu, Shuang Li, Xiao-Bin Lu, Lin-Zhi Wu

{"title":"Numerical study of flow-induced noise response of lightweight composite sandwich sail based on the boundary element method","authors":"Peng Yin, Xu-Chang Liu, Jin-Shui Yang, Yao-Yao Xu, Shuang Li, Xiao-Bin Lu, Lin-Zhi Wu","doi":"10.1016/j.enganabound.2024.106059","DOIUrl":"https://doi.org/10.1016/j.enganabound.2024.106059","url":null,"abstract":"The submarine's sail, as the largest appendage structure, is more susceptible to turbulence induced vibrations during medium to high-speed navigation, making it a critical area for the generation of flow-induced noise, significantly impacting the stealth and safety of submarine. Considering the excellent mechanical properties and high damping characteristics of lightweight composite sandwich structures, by combining large eddy simulation with vibro-acoustic coupling methods based on boundary element method, under the premise of verifying the accuracy of the numerical methods, a series of three-dimensional dynamic numerical models are established to investigate the flow-induced noise response of the novel composite sandwich sail. The results indicate that the overall sound power level of composite sandwich sail is reduced by approximately 8.9 dB compared to steel structure. The maximum sound power level of composite sandwich sail is lower than the steel with equal areal density. The sound pressure of the sail with buoyant material is lower than that of foam and PVC with the same damping. This work can provide theoretical support for the design methods of new lightweight, multifunctional sail structures.","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":"83 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142793487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A novel spatial-temporal collocation solver for long-time transient diffusion with time-varying source terms 具有时变源项的长时间瞬态扩散的一种新的时空搭配求解器

IF 3.3 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2024-12-05 DOI: 10.1016/j.enganabound.2024.106060

Wenzhi Xu, Zhuojia Fu, Qiang Xi, Qingguo Liu, Božidar Šarler

{"title":"A novel spatial-temporal collocation solver for long-time transient diffusion with time-varying source terms","authors":"Wenzhi Xu, Zhuojia Fu, Qiang Xi, Qingguo Liu, Božidar Šarler","doi":"10.1016/j.enganabound.2024.106060","DOIUrl":"https://doi.org/10.1016/j.enganabound.2024.106060","url":null,"abstract":"In this paper, a novel spatial-temporal collocation solver is proposed for the solution of 2D and 3D long-time diffusion problems with source terms varying over time. In the present collocation solver, a series of semi-analytical spatial-temporal fundamental solutions are used to approximate the solutions of the time-dependent diffusion equations with only the node discretization of the initial and boundary conditions. This approach avoids the numerical inverse Laplace/Fourier transformations or the selection of the time-step size in the traditional time discretization methods (Laplace/Fourier transformations and time-stepping scheme, etc.). To treat with the time-varying source terms, an extension of the multiple reciprocity method from the spatial domain to the spatial-temporal domain is achieved, which converts the nonhomogeneous governing equation into a high-order partial differential equation via a series of differential operators without the need for additional discretization in the spatial-temporal domain. Several numerical examples validate the feasibility, efficiency and accuracy of the proposed solver.","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":"7 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142793485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Wave–current–wind interaction with elastic floating offshore wind turbines 弹性浮式海上风力发电机的波浪-流-风相互作用

IF 3.3 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2024-12-05 DOI: 10.1016/j.enganabound.2024.106052

A. Lamei, M. Hayatdavoodi, H.R. Riggs, R.C. Ertekin

{"title":"Wave–current–wind interaction with elastic floating offshore wind turbines","authors":"A. Lamei, M. Hayatdavoodi, H.R. Riggs, R.C. Ertekin","doi":"10.1016/j.enganabound.2024.106052","DOIUrl":"https://doi.org/10.1016/j.enganabound.2024.106052","url":null,"abstract":"This study is concerned with rigid-body responses and elastic motion of floating offshore wind turbines (FOWTs) under combined wave, current and wind loads. A numerical approach is developed in frequency domain based on the linear diffraction theory with a Green function for small current speeds and the blade-element momentum method for hydrodynamic and aerodynamic analysis, respectively. This approach is coupled with the finite-element method to obtain the hydro- and aeroelastic motion of FOWTs. The interaction of combined wave–current–wind with three FOWTs, namely SPAR, semisubmersible and barge, is considered. Rigid-body responses of the three FOWTs to waves and wind are compared to those when current loads are present. Furthermore, the effect of current speed and misalignment of incident waves with current-wind on the motion of the FOWTs is investigated. Discussion is provided on the importance of considering wave–current interaction together with aerodynamic loads on the responses of the considered FOWTs. It is observed that the motion of the SPAR FOWT to combined waves and wind changes the most when the current loads are added. Finally, the effect of wave–current-wind interaction on the elastic motion of flexible FOWTs is investigated and compared with their rigid-body counterparts.","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":"35 6 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142793488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Properties optimisation of nanostructures via machine learning: Progress and perspective 基于机器学习的纳米结构性能优化：进展与展望

IF 3.3 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2024-12-04 DOI: 10.1016/j.enganabound.2024.106063

Nurul Akmal Che Lah

{"title":"Properties optimisation of nanostructures via machine learning: Progress and perspective","authors":"Nurul Akmal Che Lah","doi":"10.1016/j.enganabound.2024.106063","DOIUrl":"https://doi.org/10.1016/j.enganabound.2024.106063","url":null,"abstract":"Nanostructures play a vast role in the current Internet of NanoThings (IoNT) era due to remarkable properties and features that precisely impart their desired application functions in catalysis, energy and other fields. The exploration in understanding their minute features caused by the flexibility of compositional and complex atomic arrangement from the synthesis reaction widely opens for the in-depth discovery of their search space such as particle size, morphology and structures that controlled the characteristics. A wide range of possible compositions and various lattice atomic arrangements combined with small particle size distribution and large surface area create grand challenges to copy/differentiate their corresponding specific properties. Thus, the employment of machine learning (ML)-based strategies using the closed-loop experimental data from the nanostructure synthesis to help navigate and optimise for the large classes of data attributes related to the size, morphology and other properties from the trained model are reviewed. The data attributes are assisted by discussions of the selected case studies from the recent literature that highlight different condition nanostructures. The review concludes with a discussion of perspectives on the major challenges in the implementation of ML data-driven design in the field of nanostructure synthesis.","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":"23 2 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142793489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Solving electrostatic and electroelastic problems with the node's residual descent method 用节点残差下降法求解静电和电弹性问题

IF 3.3 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2024-12-02 DOI: 10.1016/j.enganabound.2024.106053

Tailang Dong, Shanju Wang, Yuhong Cui

{"title":"Solving electrostatic and electroelastic problems with the node's residual descent method","authors":"Tailang Dong, Shanju Wang, Yuhong Cui","doi":"10.1016/j.enganabound.2024.106053","DOIUrl":"https://doi.org/10.1016/j.enganabound.2024.106053","url":null,"abstract":"Piezoelectric materials are extensively used in engineering for the fabrication of sensors, transducers, and actuators. Due to the coupling characteristics, anisotropy, and arbitrariness of polarization directions, the tasks of mesh generation, numerical integration, and global equation formulation involved in numerical computations are complex and nontrivial. To solve electrostatic and electroelastic problems, an easily implementable node's residual descent method (NRDM) is established in this study. The capability and accuracy of NRDM are validated through the solution of three-dimensional electrostatic, linear elastic, and electroelastic problems, achieving relative errors of 0.17%–1.60% for stress and 0.02%–0.15% for other variables. Fundamental and higher-order variables exhibit second-order accuracy, with convergence rates ranging from 1.98 to 2.27 using a first-order generalized finite difference scheme. This comprehensively validates the double derivation technique. The electroelastic coupling problems can be addressed by explicitly calculating electric displacement and stress based on the stress–charge form of piezoelectric constitutive equations during the iteration process. Additionally, the local basis coordinate technique is seamlessly integrated, enabling the solution of anisotropic piezoelectric problems with arbitrary polarization directions through explicit tensor operations.","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":"14 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142793491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on the ice-water interaction problem based on MPS-NDEM coupling model 基于MPS-NDEM耦合模型的冰水相互作用问题研究

IF 3.3 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2024-12-02 DOI: 10.1016/j.enganabound.2024.106055

Biye Yang, Jinxin Wu, Zhe Sun, Borui Yang, Guiyong Zhang

{"title":"Study on the ice-water interaction problem based on MPS-NDEM coupling model","authors":"Biye Yang, Jinxin Wu, Zhe Sun, Borui Yang, Guiyong Zhang","doi":"10.1016/j.enganabound.2024.106055","DOIUrl":"https://doi.org/10.1016/j.enganabound.2024.106055","url":null,"abstract":"Ice-water coupling is a unique fluid-solid interaction problem characterized by collisions and hydrodynamic interaction between multiple bodies, accompanied by significant changes in the free surface. This paper presents a novel numerical model that achieves two-way coupling between the moving particle semi-implicit (MPS) method and the non-smooth discrete element method (NDEM) to simulate ice-water interactions. The MPS method is employed to model fluid motion, while the NDEM is applied to simulate the motion and collision of ice floes. The improved MPS method presented in this study, based on our previous research, addresses several issues found in the traditional MPS method. To improve the computational efficiency, the domain decomposition method is implemented to parallel the fluid solver and the AMG preconditioned GMRES iterative solver is selected as the optimal solution scheme for the improved MPS method. The accuracy and feasibility of the present coupling model are validated through benchmark cases, such as dam break, wave motion, ice motion in regular waves and debris dam break flow. Furthermore, the simulation of the ship moving in the broken ice field is successfully conducted with the coupling model and the influence of ice-water coupling load on predicting broken ice resistance is also investigated.","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":"69 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142793492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A meshless Runge-Kutta-based Physics-Informed Neural Network framework for structural vibration analysis 结构振动分析的无网格龙格-库塔神经网络框架

IF 3.3 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2024-11-30 DOI: 10.1016/j.enganabound.2024.106054

Shusheng Xiao, Jinshuai Bai, Hyogu Jeong, Laith Alzubaidi, YuanTong Gu

{"title":"A meshless Runge-Kutta-based Physics-Informed Neural Network framework for structural vibration analysis","authors":"Shusheng Xiao, Jinshuai Bai, Hyogu Jeong, Laith Alzubaidi, YuanTong Gu","doi":"10.1016/j.enganabound.2024.106054","DOIUrl":"https://doi.org/10.1016/j.enganabound.2024.106054","url":null,"abstract":"In recent years, Physics-Informed Neural Networks (PINN) have emerged as powerful meshless numerical methods for solving partial differential equations (PDEs) in engineering and science, including the field of structural vibration. However, PINN struggles due to the spectral bias when the target PDEs exhibit high-frequency features. In this work, a meshless Runge-Kutta-based PINN (R-KPINN) framework for structural vibration modelling is proposed for the first time. In the framework, the meshless features of traditional PINN are retained while applying Runge-Kutta (R-K) time integration to discretise the temporal domain, thereby reducing computational demands and enhancing temporal flexibility. Besides, the proposed R-KPINN allows for segmental training of PINN, reducing the dimensionality of the structural vibration problems and offering accurate solutions to relatively high-frequency functions. Through numerical examples including free, damped, and forced vibration of Euler-Bernoulli beams, the proposed framework provides effective and precise solutions for predicting the responses of structures. In summary, the proposed R-KPINN framework provides a flexible, efficient, and interpretable meshless method for solving structural vibration problems with state-of-the-art PINN techniques.","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":"18 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142758687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Gradient-constrained algorithm for simulating bubble growth in microchannel boiling flow using volume of fluid method 用流体体积法模拟微通道沸腾流中气泡生长的梯度约束算法

IF 3.3 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2024-11-30 DOI: 10.1016/j.enganabound.2024.106051

Hongtao Gao, Jianrong Zhai, Yuying Yan

{"title":"Gradient-constrained algorithm for simulating bubble growth in microchannel boiling flow using volume of fluid method","authors":"Hongtao Gao, Jianrong Zhai, Yuying Yan","doi":"10.1016/j.enganabound.2024.106051","DOIUrl":"https://doi.org/10.1016/j.enganabound.2024.106051","url":null,"abstract":"This study focuses on the numerical simulation of bubble growth in microchannels and addresses the interfacial deformations associated with phase transitions in the Volume of Fluid (VOF) method. In order to avoid the blurred deformation of the interface during bubble growth, a gradient-constrained algorithm is proposed to simulate bubble growth with sharp interface. The algorithm proposed in this paper is to compress the phase interface by selecting a suitable gradient range of the gas phase volume share change, and then adjust the position of the gas phase mass source to the compressed interface. It is recommended that the selected minimum value of the gas phase volume fraction gradient mode value falls between 20 % and 50 % of the maximum value. The proposed method is verified by three engineering problems: bubble growth in the microchannel, Taylor bubble movement in the microchannel and bubbles side-by-side rise and coalescing. The simulation results of these three engineering problems show good agreement with other researchers' simulation, theoretical model and experimental results. The algorithm proposed in this paper is more convenient in capturing the phase interface and describing the evaporation process.","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":"80 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142758688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An efficient coupled fluid flow-geomechanics model for capturing the dynamic behavior of fracture systems in tight porous media 一种有效的流体流动-地质力学耦合模型，用于捕获致密多孔介质中裂缝系统的动态行为

IF 4.2 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2024-11-29 DOI: 10.1016/j.enganabound.2024.106046

Xulin Du , Linsong Cheng , Maojun Fang , Xiang Rao , Sidong Fang , Renyi Cao

{"title":"An efficient coupled fluid flow-geomechanics model for capturing the dynamic behavior of fracture systems in tight porous media","authors":"Xulin Du , Linsong Cheng , Maojun Fang , Xiang Rao , Sidong Fang , Renyi Cao","doi":"10.1016/j.enganabound.2024.106046","DOIUrl":"10.1016/j.enganabound.2024.106046","url":null,"abstract":"<div><div>This paper introduces an efficient hybrid numerical discretization method designed to address the coupled mechanical challenges of geomechanics and fluid flow during pressure depletion in tight reservoirs. Utilizing the extended finite element method, this approach solves the elastic deformation of rock, while the mixed boundary element method precisely calculates the unsteady fluid exchange between the matrix and fractures. These numerical schemes are integrated fully, with temporal dynamics managed through a fully implicit method that effectively characterizes fracture deformation and fluid flow in hydrocarbon development. Furthermore, this model incorporates embedded pre-treatment to represent hydraulic macro-fractures and considers the effects of proppant. It captures dynamic information regarding the matrix and minor natural fractures through the double-porosity effective stress principle and a dual-medium implicit fracture characterization method. Thus, the proposed hybrid model provides a comprehensive depiction of the complex interplay between the matrix, natural fractures, and hydraulic fractures. The model's accuracy is validated through various examples, highlighting its reliability. This research offers valuable theoretical insights for advancing the development of unconventional hydrocarbon resources.</div></div>","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":"169 ","pages":"Article 106046"},"PeriodicalIF":4.2,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0