Communications in Nonlinear Science and Numerical Simulation最新文献_第8页

A novel two-dimensional D2Q9 cumulant-based lattice Boltzmann method: simulation and validation across multiple flow phenomena 一种基于二维D2Q9累积量的晶格玻尔兹曼方法：跨多种流动现象的模拟与验证

IF 3.8 2区数学

Communications in Nonlinear Science and Numerical Simulation Pub Date : 2025-09-19 DOI: 10.1016/j.cnsns.2025.109327

Md. Mamun Molla

{"title":"A novel two-dimensional D2Q9 cumulant-based lattice Boltzmann method: simulation and validation across multiple flow phenomena","authors":"Md. Mamun Molla","doi":"10.1016/j.cnsns.2025.109327","DOIUrl":"10.1016/j.cnsns.2025.109327","url":null,"abstract":"<div><div>This study presents a novel two-dimensional (2D) cumulant lattice Boltzmann method (CuLBM), known as D2Q9 CuLBM, which has been implemented using compute unit device architecture (CUDA) C/C++ to leverage graphics processing unit (GPU) computing for enhanced efficiency and performance. The cumulant-based lattice Boltzmann approach is a recent advancement in computational fluid dynamics (CFD) methods designed to offer improved stability and accuracy, particularly for simulating complex fluid flows. This work comprehensively describes the D2Q9 CuLBM formulation, focusing on its application to several benchmark and complex fluid flow cases. The well known validation tests include lid-driven cavity (LDC) flow and backward-facing step (BFS) flow, both frequently used in CFD to assess the accuracy and stability of numerical methods. Additionally, the model is evaluated on periodic double shear layer flow, a challenging problem for flow stability, Green–Taylor vortex and Kida–Pelz vortex flows and extended to shear-dependent non-Newtonian fluids, specifically those obeying power-law and Bingham models in the lid driven cavity, Couette and Poiseuille flows. These non-Newtonian cases are critical for capturing flows with complex rheological properties, demonstrating the versatility and accuracy of the D2Q9 CuLBM approach in handling a broad spectrum of fluid dynamics problems.</div></div>","PeriodicalId":50658,"journal":{"name":"Communications in Nonlinear Science and Numerical Simulation","volume":"152 ","pages":"Article 109327"},"PeriodicalIF":3.8,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145157943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modelling wildfire propagation using the stochastic level-set method 用随机水平集方法模拟野火传播

IF 3.8 2区数学

Communications in Nonlinear Science and Numerical Simulation Pub Date : 2025-09-19 DOI: 10.1016/j.cnsns.2025.109305

Sahar Masoudian , Jason Sharples , Duncan Sutherland , Zlatko Jovanoski , James Hilton

{"title":"Modelling wildfire propagation using the stochastic level-set method","authors":"Sahar Masoudian , Jason Sharples , Duncan Sutherland , Zlatko Jovanoski , James Hilton","doi":"10.1016/j.cnsns.2025.109305","DOIUrl":"10.1016/j.cnsns.2025.109305","url":null,"abstract":"<div><div>The modelling of wildfire spread involves managing uncertainties from various sources, typically addressed through probabilistic rather than deterministic approaches. Natural random variability in the dynamics of the fire front can be directly captured by integrating stochastic noise into the fire front tracking model. To achieve this, a Gaussian noise is introduced into the level-set model using a stochastic level-set approach in the wildfire spread simulator “<span>spark</span>”. The incorporation of stochasticity into the fire spread model enables the simulation to capture variability in fire front growth.</div><div>The model is calibrated and validated by comparing the stochastic fire spread simulations to observed fire data. The developed model is also compared to a specific case of fire spread simulation created using the Wildland-Urban Fire Dynamic Simulator (<span>wfds</span>). This comparative analysis provides a conclusive evaluation, highlighting the performance and capabilities of the stochastic approach in capturing the uncertainties and complexities of fire behavior.</div></div>","PeriodicalId":50658,"journal":{"name":"Communications in Nonlinear Science and Numerical Simulation","volume":"152 ","pages":"Article 109305"},"PeriodicalIF":3.8,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145219359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A new predefined-time fractional-order sliding mode synchronization control scheme for multi-motor systems 一种新的多电机系统的预定义时间分数阶滑模同步控制方案

IF 3.8 2区数学

Communications in Nonlinear Science and Numerical Simulation Pub Date : 2025-09-19 DOI: 10.1016/j.cnsns.2025.109307

Jia-Meng Wu, Xin Huang, Cheng-Lin Liu

{"title":"A new predefined-time fractional-order sliding mode synchronization control scheme for multi-motor systems","authors":"Jia-Meng Wu, Xin Huang, Cheng-Lin Liu","doi":"10.1016/j.cnsns.2025.109307","DOIUrl":"10.1016/j.cnsns.2025.109307","url":null,"abstract":"<div><div>This paper investigates the tracking and synchronization control of multi-motor systems and proposes a novel predefined-time fractional-order sliding mode control strategy. First, a novel simplified predefined-time stability condition is introduced, which alleviates the problem of parameter complexity in existing predefined-time stability theories and broadens their applicability. The validity of this condition is rigorously established through a Lyapunov-based analysis. Then, a fractional-order sliding mode observer is designed based on this stability condition. By integrating fractional-order calculus, the proposed observer increases flexibility and enhances the overall control performance compared to conventional observers. Furthermore, a fractional-order controller is developed by constructing a fractional-order sliding surface and a corresponding switching control law. The stability of the controller is further guaranteed by employing the Lyapunov function. Finally, simulation results are presented to verify the effectiveness of the proposed control strategy. These results highlight the advantages of the proposed controller, including rapid disturbance rejection, reduced chattering, and robust performance against unknown lumped disturbances.</div></div>","PeriodicalId":50658,"journal":{"name":"Communications in Nonlinear Science and Numerical Simulation","volume":"152 ","pages":"Article 109307"},"PeriodicalIF":3.8,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145157241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimal tracking control for multi-player systems with irregular full-state constraints 具有不规则全状态约束的多玩家系统的最优跟踪控制

IF 3.8 2区数学

Communications in Nonlinear Science and Numerical Simulation Pub Date : 2025-09-19 DOI: 10.1016/j.cnsns.2025.109295

Haoming Zou , Guoshan Zhang

引用次数: 0

The exponential stability criteria for second-order neural networks with time-varying mixed delays and actuator faults 具有时变混合延迟和执行器故障的二阶神经网络的指数稳定性准则

IF 3.8 2区数学

Communications in Nonlinear Science and Numerical Simulation Pub Date : 2025-09-19 DOI: 10.1016/j.cnsns.2025.109320

Yongfang Jin , Xingwu Liu , Lanfeng Hua , Shouming Zhong , Xingwen Liu

引用次数: 0

Finite-time stability of 2D continuous switched nonlinear systems 二维连续切换非线性系统的有限时间稳定性

IF 3.8 2区数学

Communications in Nonlinear Science and Numerical Simulation Pub Date : 2025-09-19 DOI: 10.1016/j.cnsns.2025.109340

Mengying Sun , Yongping Zhang , Dadong Tian

{"title":"Finite-time stability of 2D continuous switched nonlinear systems","authors":"Mengying Sun , Yongping Zhang , Dadong Tian","doi":"10.1016/j.cnsns.2025.109340","DOIUrl":"10.1016/j.cnsns.2025.109340","url":null,"abstract":"<div><div>The finite-time stability theory of 2D switched linear systems has been well developed, whereas few studies have focused on 2D switched nonlinear systems. In this paper, the finite-time stability of 2D continuous switched nonlinear systems is discussed. Firstly, by employing a common Lyapunov function method, the upper bounds on the times <span><math><msub><mi>T</mi><mn>1</mn></msub></math></span> and <span><math><msub><mi>T</mi><mn>2</mn></msub></math></span> required for the system to achieve finite-time stability are obtained. The results indicate that these upper bounds mainly depend on the system parameters and are independent of the switching signals. Sufficient conditions for the finite-time stability of 2D continuous switched nonlinear systems are further derived. Secondly, considering a wider range of situations, we introduce the multiple Lyapunov function methods, and derive the upper bounds on the times <span><math><msub><mi>T</mi><mn>1</mn></msub></math></span> and <span><math><msub><mi>T</mi><mn>2</mn></msub></math></span> again. The results reveal that, in addition to the system parameters, the upper bounds on the times <span><math><msub><mi>T</mi><mn>1</mn></msub></math></span> and <span><math><msub><mi>T</mi><mn>2</mn></msub></math></span> are also influenced by the switching signals. Additionally, a finite-time stabilization strategy is proposed based on the average dwell time method. We also extend the conclusions of finite-time stability to 2D continuous switched linear systems. Finally, two numerical examples are provided to illustrate the validity of our results.</div></div>","PeriodicalId":50658,"journal":{"name":"Communications in Nonlinear Science and Numerical Simulation","volume":"152 ","pages":"Article 109340"},"PeriodicalIF":3.8,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145157232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Output formation control and energy optimization strategies for singular swarm systems under budget constraint 预算约束下奇异群系统的输出编队控制与能量优化策略

IF 3.8 2区数学

Communications in Nonlinear Science and Numerical Simulation Pub Date : 2025-09-19 DOI: 10.1016/j.cnsns.2025.109318

Cheng Wang, Jianxiang Xi, Le Wang, Zhicheng Yao, Jiuan Gao

{"title":"Output formation control and energy optimization strategies for singular swarm systems under budget constraint","authors":"Cheng Wang, Jianxiang Xi, Le Wang, Zhicheng Yao, Jiuan Gao","doi":"10.1016/j.cnsns.2025.109318","DOIUrl":"10.1016/j.cnsns.2025.109318","url":null,"abstract":"<div><div>This paper proposes an energy-optimized output formation control framework for singular swarm systems with dynamic communication topologies, addressing the critical challenge of coordinating energy-constrained multi-agent networks. By integrating constrained equivalent transformation and observability decomposition, we develop a dynamic output feedback protocol featuring a state-dependent formation mapping mechanism. The framework establishes sufficient conditions for leaderless time-varying output formation realization under topology switching, while providing explicit energy feasibility criteria and formation construction constraints. Crucially, a linear matrix inequality-based two-stage optimization method is introduced to determine gain matrices, and the explicit expression of the output formation center function is analytically determined to characterize the swarm’s global motion. Numerical simulation demonstrates the theoretical validity, in which an time-varying regular-octagon output formation along circular trajectories is achieved under the constraint of a given energy budget.</div></div>","PeriodicalId":50658,"journal":{"name":"Communications in Nonlinear Science and Numerical Simulation","volume":"152 ","pages":"Article 109318"},"PeriodicalIF":3.8,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145157233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Adaptive fixed-time tracking control based on a novel command filter for uncertain nonlinear systems with asymmetric time-varying constraints 非对称时变约束下不确定非线性系统基于新型命令滤波器的自适应定时跟踪控制

IF 3.8 2区数学

Communications in Nonlinear Science and Numerical Simulation Pub Date : 2025-09-19 DOI: 10.1016/j.cnsns.2025.109312

Xiaohong Cheng , Shuang Liu , Shaomeng Gu , Wenbo Wang

{"title":"Adaptive fixed-time tracking control based on a novel command filter for uncertain nonlinear systems with asymmetric time-varying constraints","authors":"Xiaohong Cheng , Shuang Liu , Shaomeng Gu , Wenbo Wang","doi":"10.1016/j.cnsns.2025.109312","DOIUrl":"10.1016/j.cnsns.2025.109312","url":null,"abstract":"<div><div>In this paper, an adaptive fixed-time tracking control method is proposed for uncertain nonlinear systems under asymmetric time-varying constraints to enhance control performance and stability, which includes a novel command filter, a series of newly designed adaptive laws, and a fixed-time controller. First, an improved fixed-time command filtering framework incorporating dynamic error compensation is proposed to effectively address the “complexity explosion” problem caused by the backstepping technology. Second, novel adaptive laws are designed based on radial basis function neural networks (RBFNN) to handle the uncertain nonlinear term and disturbance. Subsequently, based on the time-varying asymmetric barrier Lyapunov function (TABLF), a fixed-time controller is designed to track the reference signal, and all system states can be remained within asymmetric time-varying constraints. Finally, two simulation examples are presented to demonstrate the effectiveness of the proposed control method.</div></div>","PeriodicalId":50658,"journal":{"name":"Communications in Nonlinear Science and Numerical Simulation","volume":"152 ","pages":"Article 109312"},"PeriodicalIF":3.8,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145157940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bifurcation sequences in the secular 3D planetary 3-Body problem: a geometric approach 长期三维行星三体问题的分岔序列：几何方法

IF 3.8 2区数学

Communications in Nonlinear Science and Numerical Simulation Pub Date : 2025-09-19 DOI: 10.1016/j.cnsns.2025.109324

Rita Mastroianni , Antonella Marchesiello , Christos Efthymiopoulos , Giuseppe Pucacco

{"title":"Bifurcation sequences in the secular 3D planetary 3-Body problem: a geometric approach","authors":"Rita Mastroianni , Antonella Marchesiello , Christos Efthymiopoulos , Giuseppe Pucacco","doi":"10.1016/j.cnsns.2025.109324","DOIUrl":"10.1016/j.cnsns.2025.109324","url":null,"abstract":"<div><div>We implement the geometric method proposed in [14, 17, <span><span>21</span></span>] to analytically predict the sequence of bifurcations leading to a change of stability and/or the appearance of new periodic orbits in the secular 3D planetary three body problem. Stemming from the analysis in [1], we examine various normal form models as regards the extent to which they lead to a phase space dynamics qualitatively similar as that in the complete system. For fixed total angular momentum, the phase space in Hopf variables is the 3D sphere, and the complete sequence of bifurcations of new periodic orbits can be recovered through formulas yielding the tangencies or degenerate intersections between the sphere and the surfaces of a constant second integral of motion of the normal form flow. In particular, we find the critical values of the second integral giving rise to pitchfork and saddle-node bifurcations of new periodic orbits in the system. This analysis renders possible to predict the most important structural changes in the phase space, as well as the emergence of new possible stable periodic planetary orbital configurations which can take place as the mutual inclination between the two planets is allowed to increase.</div></div>","PeriodicalId":50658,"journal":{"name":"Communications in Nonlinear Science and Numerical Simulation","volume":"152 ","pages":"Article 109324"},"PeriodicalIF":3.8,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145219439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Event-triggered impulsive control for nonlinear impulsive disturbed systems with applications 非线性脉冲扰动系统的事件触发脉冲控制及其应用

IF 3.8 2区数学

Communications in Nonlinear Science and Numerical Simulation Pub Date : 2025-09-19 DOI: 10.1016/j.cnsns.2025.109292

Qi Fang , Xiaodi Li

{"title":"Event-triggered impulsive control for nonlinear impulsive disturbed systems with applications","authors":"Qi Fang , Xiaodi Li","doi":"10.1016/j.cnsns.2025.109292","DOIUrl":"10.1016/j.cnsns.2025.109292","url":null,"abstract":"<div><div>This paper researches the Lyapunov stability of nonlinear impulsive disturbed systems in the framework of anti-impulse disturbance event-triggered impulsive control (<em>ETIC</em>), where impulsive control instants are determined by the designed event-triggered mechanism (<em>ETM</em>) with intermittent detection. Different from the existing event-triggered mechanisms, a novel <em>ETM</em> which utilizes impulsive interference information is proposed by which the impulsive controller is always accurately activated once between two adjacent impulsive disturbances, thus the divergent dynamics caused by impulsive disturbances can be suppressed promptly and effectively. Moreover, some sufficient conditions are derived to eliminate Zeno behavior and to achieve asymptotical stability of nonlinear systems subject to impulsive disturbances under <em>ETIC</em>. Then, the theoretical results are applied to chaotic systems with impulsive disturbances, and some linear matrix inequalities are established to realize the synchronization of chaotic systems. Finally, two numeral simulations are given to demonstrate the feasibility and superiority of the proposed results.</div></div>","PeriodicalId":50658,"journal":{"name":"Communications in Nonlinear Science and Numerical Simulation","volume":"152 ","pages":"Article 109292"},"PeriodicalIF":3.8,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145157931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0