Engineering Analysis with Boundary Elements最新文献_第4页

Interaction analysis between single pile and multilayered saturated soils under horizontal transient loading 水平瞬态荷载下单桩与多层饱和土的相互作用分析

IF 4.2 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2024-09-21 DOI: 10.1016/j.enganabound.2024.105973

{"title":"Interaction analysis between single pile and multilayered saturated soils under horizontal transient loading","authors":"","doi":"10.1016/j.enganabound.2024.105973","DOIUrl":"10.1016/j.enganabound.2024.105973","url":null,"abstract":"<div><div>This study employs the coupled finite element-boundary element method to investigate the dynamic response of single pile subjected to horizontal transient loading, which is a common scenario in high-rise building, transportation, and ocean engineering. Firstly, the single pile is modeled as a Timoshenko beam and then discretized with the finite element method (FEM). The transient solution for multilayered saturated soils due to a horizontal load, serving as the kernel function for the boundary element method (BEM), aids in the derivation of the flexibility matrix of the soils. Considering the pile-soil displacement coordination conditions, the coupled FEM-BEM equation is constructed and solved to characterize the pile-soil interaction. Since the pile discretization pattern is applied consistently to the soils, it is more effective than the discretization of infinite domain in the finite element analysis. The validity of the presented method is confirmed through comparison with the full FEM numerical simulations, demonstrating the correctness and enhanced computational efficiency. Finally, parametric studies are carried out to discuss the effects of pile's length-diameter ratio, soil's shear wave velocity and stratification.</div></div>","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142311179","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 radial basis function-finite difference method for solving Landau–Lifshitz–Gilbert equation including Dzyaloshinskii-Moriya interaction 用于求解包含 Dzyaloshinskii-Moriya 相互作用的 Landau-Lifshitz-Gilbert 方程的径向基函数-有限差分法

IF 4.2 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2024-09-20 DOI: 10.1016/j.enganabound.2024.105966

引用次数: 0

An efficient flux-reconstructed lattice boltzmann flux solver for flow interaction of multi-structure with curved boundary 针对具有弯曲边界的多结构流动相互作用的高效通量重构晶格玻尔兹曼通量求解器

IF 4.2 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2024-09-20 DOI: 10.1016/j.enganabound.2024.105958

{"title":"An efficient flux-reconstructed lattice boltzmann flux solver for flow interaction of multi-structure with curved boundary","authors":"","doi":"10.1016/j.enganabound.2024.105958","DOIUrl":"10.1016/j.enganabound.2024.105958","url":null,"abstract":"<div><div>Recently, the escalating computational capability provided by advanced GPU technology for numerical simulations is well-suited for tackling large-scale engineering challenges. The lattice Boltzmann flux solver (LBFS), as a relatively new fluid-solving method, combines the parallelization characteristics of the lattice Boltzmann method (LBM) with the ability to handle non-uniform grids. Building upon these advantages, this study aligns its flux computational steps with the demands of the GPU parallel computing environment, thus developing an efficient flux-reconstructed lattice Boltzmann flux solver (FRLBFS), the improved algorithm not only ensures precision but also achieves a significant enhancement in efficiency, reaching up to a remarkable 500-fold improvement. Additionally, this work combines the immersed boundary method, significantly improving the efficiency of addressing hydrodynamic problems with multiple structures. Through numerical validation, under identical GPU hardware conditions, the proposed method in this paper outperform LBM in terms of computational efficiency. Lastly, simulations of flow past an array of eight cylinders at different Reynolds numbers are conducted, instantaneous contour plots at various dimensionless time points and time-dependent curves of drag and lift coefficients for different cylinders are provided, to demonstrate the complex vortex shedding surrounding multiple cylinders and its extraordinary computational efficiency.</div></div>","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142275747","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

Stokes flow past an array of circular cylinders through slip-patterned microchannel using boundary element method 利用边界元法计算通过滑移图案微通道的圆柱阵列的斯托克斯流

IF 4.2 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2024-09-20 DOI: 10.1016/j.enganabound.2024.105925

{"title":"Stokes flow past an array of circular cylinders through slip-patterned microchannel using boundary element method","authors":"","doi":"10.1016/j.enganabound.2024.105925","DOIUrl":"10.1016/j.enganabound.2024.105925","url":null,"abstract":"<div><div>Two-dimensional viscous incompressible, pressure-driven, creeping flow at low Reynold's number (<em>Re</em> ≪ 1) around a series of circular cylinders in a slip-patterned rectangular microchannel is investigated numerically by using the boundary element method (BEM) based on a non-primitive variables approach. The non-primitive variables approach refers to the combination of stream function and vorticity variables. The Stokes equations are used to govern the flow of creeping fluid through a microchannel. We consider the alteration of the slip on both the upper and lower surfaces of the microchannel maintain the same phase (i.e., in-phase configuration). Here, the slip boundary condition refers to Navier's slip boundary condition. We considered both small as well as large patterned slip on both surfaces of the microchannel. Moreover, we have assumed that a number of cylinders of equal diameter are present in the in-line configuration in the path of flow. We studied streamlines, velocity profiles, pressure gradients, and the shear stresses with varied slip-length, and the radius of the cylinder, to get a complete comprehension of flow dynamics. We observed that the velocity and shear stress profiles exhibit significant variability in the case of fine slip patterning. Additionally, the proposed investigation holds several potential applications, such as drug capsule delivery systems, hemodynamics, bio-MEMS technology, and so forth.</div></div>","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142275748","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 multi-domain singular boundary method for dynamic analysis of multilayered saturated porous media 用于多层饱和多孔介质动态分析的多域奇异边界法

IF 4.2 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2024-09-20 DOI: 10.1016/j.enganabound.2024.105967

{"title":"A multi-domain singular boundary method for dynamic analysis of multilayered saturated porous media","authors":"","doi":"10.1016/j.enganabound.2024.105967","DOIUrl":"10.1016/j.enganabound.2024.105967","url":null,"abstract":"<div><div>The singular boundary method (SBM) is a boundary-only meshless collocation method, but it is not applicable to solve multi-material cases directly with closed-form fundamental solutions. In this study, a semi-analytical boundary-only approach, multi-domain SBM (MD-SBM), is firstly formulated to study the dynamic analysis of multilayered saturated porous media. Firstly, the domain is divided into several subdomains with the consistent material. Then, the singular boundary method (SBM) simulates the dynamic response in each subdomain via a linear combination of fundamental solutions. The source singularity issue is removed by the origin intensity factors (OIFs) rather than singular integrals in the BEM. Finally, the SBM solutions in each layer are coupled by the continuity and compatibility conditions on the interface boundaries between adjacent layers. The SBM does not require domain discretization and desingularizes the source singularity with simple formulas. Thus, it is easy to implement. The MD-SBM is tested to both finite and semi-infinite cases to illustrate its accuracy and feasibility. It is worthnoting that the closed-form fundamental solutions can be directly applied to the semi-infinite cases without requiring additional modifications.</div></div>","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142275745","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 investigation of dynamic droplet wetting within the smoothed dissipative particle dynamics (SDPD) multi-scale modeling framework 在平滑耗散颗粒动力学（SDPD）多尺度建模框架内对液滴动态润湿的研究

IF 4.2 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2024-09-18 DOI: 10.1016/j.enganabound.2024.105968

{"title":"An investigation of dynamic droplet wetting within the smoothed dissipative particle dynamics (SDPD) multi-scale modeling framework","authors":"","doi":"10.1016/j.enganabound.2024.105968","DOIUrl":"10.1016/j.enganabound.2024.105968","url":null,"abstract":"<div><p>The multi-scale numerical procedure proposed in our previous work based on smoothed dissipative particle dynamics (SDPD) is employed, and a new multi-phase interaction model based on the inter-particle force (IPF) that includes a consistent repulsion force is presented and verified. A comparative investigation utilizing smoothed particle hydrodynamics (SPH), SDPD, and our multi-scale methods is then carried out and the computational efficiency, droplet morphology, wetting flow field, and advantages of the multi-scale method are demonstrated. In addition, the droplet thickness is derived from the Navier–Stokes equations with a stochastic force, demonstrating the effect of thermal fluctuations on the mesoscopic scale. Finally, the wetting states are simulated at different surface roughness values, and the transition of states and some new mechanisms are clarified. When the roughness scale is smaller than the interaction range between particles, the wetting state may change significantly, and this effect becomes weaker when the roughness scale exceeds the interaction range. The results also show that the horizontal roughness (direction of droplet spreading) is more decisive than vertical one (perpendicular to the direction of droplet spreading), usually leading to a transition of the wetting states, while the vertical roughness usually plays a reinforcing role.</p></div>","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142243792","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

Quadtree SBFEM-based nonlocal damage analysis for soft biological tissues with interval parameters 基于四叉树 SBFEM 的带区间参数的软生物组织非局部损伤分析

IF 4.2 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2024-09-18 DOI: 10.1016/j.enganabound.2024.105959

引用次数: 0

Anderson accelerated preconditioning iterative method for RBF interpolation 用于 RBF 插值的安德森加速预处理迭代法

IF 4.2 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2024-09-18 DOI: 10.1016/j.enganabound.2024.105970

引用次数: 0

A DR-BEM approach for analyzing the transient SH-wave scattering problems: A comparative study 分析瞬态 SH 波散射问题的 DR-BEM 方法：比较研究

IF 4.2 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2024-09-17 DOI: 10.1016/j.enganabound.2024.105962

{"title":"A DR-BEM approach for analyzing the transient SH-wave scattering problems: A comparative study","authors":"","doi":"10.1016/j.enganabound.2024.105962","DOIUrl":"10.1016/j.enganabound.2024.105962","url":null,"abstract":"<div><p>In this paper, a new approach was presented for the transient analysis of <em>SH</em>-wave scattering problems by the dual reciprocity boundary element method (DR-BEM). In the use of static fundamental solutions and the concept of estimator functions, the effect of domain inertia integrals was applied in the boundary integral equations (BIEs). Then, the solvable form of the BIE was obtained by adding the free-field displacement to satisfy the stress-free boundary conditions on the surface. By implementing the formulation in a time-domain computer code, the accuracy and efficiency of the approach were evaluated by solving different examples including the embedded circular cavity, the semi-circular valley, and the twin hump hill subjected to obliquely propagating incident <em>SH</em>-wave. In this regard, a comprehensive comparative study was carried out with the half-space time-domain BEM (TD-BEM), previously presented by the corresponding author, to observe the accuracy of the results as well as the analysis time. The results showed that although the presented method had more complex models compared to the half-space TD-BEM, the analysis time was significantly reduced with the use of a simple formulation. This approach can be applied to prepare half-space models in the field of geotechnical earthquake engineering in substituting other time-consuming methods.</p></div>","PeriodicalId":51039,"journal":{"name":"Engineering Analysis with Boundary Elements","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142243788","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

Numerical analysis of nonlinear Klein–Gordon equations by a meshless superconvergent finite point method 用无网格超收敛有限点法对非线性克莱因-戈登方程进行数值分析

IF 4.2 2区工程技术

Engineering Analysis with Boundary Elements Pub Date : 2024-09-17 DOI: 10.1016/j.enganabound.2024.105954

引用次数: 0