Computers & Fluids最新文献

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Applying a compact porous media model to numerically derive resistance coefficients for lattice structures 应用致密多孔介质模型数值推导晶格结构的阻力系数
IF 3 3区 工程技术
Computers & Fluids Pub Date : 2025-08-16 DOI: 10.1016/j.compfluid.2025.106798
Kyle Pittman , Jacob Riglin , Jay Chen , Cesar Dominguez , Marvin Davis , Rami Batrice
{"title":"Applying a compact porous media model to numerically derive resistance coefficients for lattice structures","authors":"Kyle Pittman ,&nbsp;Jacob Riglin ,&nbsp;Jay Chen ,&nbsp;Cesar Dominguez ,&nbsp;Marvin Davis ,&nbsp;Rami Batrice","doi":"10.1016/j.compfluid.2025.106798","DOIUrl":"10.1016/j.compfluid.2025.106798","url":null,"abstract":"<div><div>Additive Manufacturing allows for exploring various geometries to achieve specific engineering criteria. Lattices are one geometry with unique properties, including being periodically repeating structures which allow flow through them to be represented as a porous media according to Darcy-Forchheimer equations. These equation’s coefficients are generally experimentally derived, but this work demonstrates the ability to numerically derive them with CFD. Simulations were performed using three-dimensional stead state Reynolds-averaged Navier-Stokes with a k-ω Shear Stress Transport turbulence model using Ansys Fluent. Three lattice geometries were investigated and drag coefficients were derived. The method was validated against externally published data for similar geometries demonstrating strong agreement, and grid convergence for all simulations was calculated with a Grid Convergence Index method. Wall roughness is demonstrated to have a non-negligible impact on results and roughness values are considered for the primary focus Octahedral geometry where both smooth wall and rough wall coefficients were derived. The porosity coefficients for the Octahedral geometry at 1.0 [m/s] were found to be 2.89×10<sup>6</sup> and 2.90×10<sup>6</sup> [1/(Pa*m*s)] for the permeability coefficients, 6.37×10<sup>1</sup> and 5.44×10<sup>1</sup> [m<sup>2</sup>/kg] for the inertial resistance coefficients, and with a max pressure drop of 5116.7 [Pa] and 4429.5 [Pa] for the smooth walls and rough walls, respectively. The derived numerical method enables rapid exploration and optimization of new lattice designs for diverse engineering applications.</div></div>","PeriodicalId":287,"journal":{"name":"Computers & Fluids","volume":"303 ","pages":"Article 106798"},"PeriodicalIF":3.0,"publicationDate":"2025-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145264408","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 class of dynamically programmed ENO schemes with adaptive order 一类具有自适应阶数的动态规划ENO方案
IF 3 3区 工程技术
Computers & Fluids Pub Date : 2025-08-14 DOI: 10.1016/j.compfluid.2025.106801
HuangSheng Wei, TongSheng Wang, Zhu Huang, Guang Xi
{"title":"A class of dynamically programmed ENO schemes with adaptive order","authors":"HuangSheng Wei,&nbsp;TongSheng Wang,&nbsp;Zhu Huang,&nbsp;Guang Xi","doi":"10.1016/j.compfluid.2025.106801","DOIUrl":"10.1016/j.compfluid.2025.106801","url":null,"abstract":"<div><div>For compressible flow with broadband length scales and discontinuities, an effective method for dissipation control is the use of a large centered, very-high-order stencil for smooth regions and a low-order scheme for regions near discontinuities. A smoothness indicator is commonly used to detect discontinuities, but it can be challenging to distinguish them from critical points and small-scale structures. This work theoretically analyzes whether local reconstruction polynomials converge as the accuracy order increases based on the d’Alembert’s ratio test. The analysis considers the monochromatic sinusoidal function in complex exponential form and the step function, which respectively model smooth and discontinuous regions. The polynomials are found to converge absolutely in the low-to-high-wavenumber space when central stencils are used, and in the low-wavenumber space when biased stencils are used. Based on this analysis, an adaptive-order method is developed without relying on the commonly used smoothness indicator. This method would automatically reduce to a low-order scheme when encountering discontinuities or high-wavenumber oscillations. Additionally, a dynamically-programmed essentially non-oscillatory (DPENO) stencil selection strategy is proposed. This strategy excludes discontinuous and biased stencils by solving a classical dynamic programming problem known as the minimum path sum (MPS) problem. The goal of the MPS problem is to find the optimal “path” from the first-order upwind stencil to the large centered, very-high-order stencil. This leads to a class of dynamically-programmed ENO schemes with adaptive order (DPENO-AO). The schemes are verified through a series of benchmark simulations, demonstrating their high computational efficiency and effectiveness in handling critical points, resolving small-scale structures, and capturing shocks.</div></div>","PeriodicalId":287,"journal":{"name":"Computers & Fluids","volume":"301 ","pages":"Article 106801"},"PeriodicalIF":3.0,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144878804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Wall-modeled large-eddy simulation of supersonic parachute inflation 超音速降落伞膨胀的壁型大涡模拟
IF 3 3区 工程技术
Computers & Fluids Pub Date : 2025-08-14 DOI: 10.1016/j.compfluid.2025.106800
Francois Cadieux, Michael F. Barad
{"title":"Wall-modeled large-eddy simulation of supersonic parachute inflation","authors":"Francois Cadieux,&nbsp;Michael F. Barad","doi":"10.1016/j.compfluid.2025.106800","DOIUrl":"10.1016/j.compfluid.2025.106800","url":null,"abstract":"<div><div>Supersonic parachutes have been used in nearly every robotic mission to another planetary body with an atmosphere because they are a mass-efficient ways to decelerate a payload to land on the surface. Short of performing flight tests in the upper Earth atmosphere, we currently cannot reliably predict a novel parachute system’s performance or potential failure modes, or even confidently explain it after the fact, as was the case with the Low Density Supersonic Decelerator flight tests and subsequent investigations. High-fidelity fluid–structure interaction (FSI) simulations have the potential to bridge this gap. To this end, we present several improvements to the state-of-the-art for simulating supersonic parachutes using FSI: a higher effective resolution convective flux, an immersed boundary turbulent wall layer modeling approach to capture viscous effects, and a novel method to obtain a more realistic initial parachute shape. A recent supersonic parachute flight test is simulated and compared with measurements for the purposes of model validation.</div></div>","PeriodicalId":287,"journal":{"name":"Computers & Fluids","volume":"301 ","pages":"Article 106800"},"PeriodicalIF":3.0,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144860625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Assessment of a consistent multi-internal-temperature kinetic model for hypersonic neutral air flows using a finite volume solver 用有限体积求解器评估高超声速中性气流的一致多内温动力学模型
IF 3 3区 工程技术
Computers & Fluids Pub Date : 2025-08-14 DOI: 10.1016/j.compfluid.2025.106796
Francesco Bonelli , Davide Ninni , Antonio Narracci , Gianpiero Colonna , Giuseppe Pascazio
{"title":"Assessment of a consistent multi-internal-temperature kinetic model for hypersonic neutral air flows using a finite volume solver","authors":"Francesco Bonelli ,&nbsp;Davide Ninni ,&nbsp;Antonio Narracci ,&nbsp;Gianpiero Colonna ,&nbsp;Giuseppe Pascazio","doi":"10.1016/j.compfluid.2025.106796","DOIUrl":"10.1016/j.compfluid.2025.106796","url":null,"abstract":"<div><div>A multi-internal-temperature approach for hypersonic air kinetics has been consistently derived from the state-specific vibrational kinetics. Vibrational levels have been grouped in a limited number of subsets (one to five), each one characterized by its own concentration and temperature, approximating the entire distribution as a piecewise Boltzmann. The capability of the reduced-order model in terms of accuracy and computational savings has been tested comparing the results with those obtained using the state-to-state approach. Firstly, a 0D heat bath evolution in thermochemical non-equilibrium is considered. Then, the proposed model has been implemented in a finite volume solver for the solution of the Euler equations, employing a Flux Vector Splitting scheme with MUSCL reconstruction, and used to solve an axisymmetric hypersonic flow past a sphere.</div></div>","PeriodicalId":287,"journal":{"name":"Computers & Fluids","volume":"301 ","pages":"Article 106796"},"PeriodicalIF":3.0,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144892798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
On the integration of geometry agnostic variational-autoencoders into large-scale SVD based models 基于SVD的大尺度模型中几何不可知变分自编码器的集成
IF 3 3区 工程技术
Computers & Fluids Pub Date : 2025-08-14 DOI: 10.1016/j.compfluid.2025.106797
Benet Eiximeno , Arnau Miró , J. Nathan Kutz , Ivette Rodriguez , Oriol Lehmkuhl
{"title":"On the integration of geometry agnostic variational-autoencoders into large-scale SVD based models","authors":"Benet Eiximeno ,&nbsp;Arnau Miró ,&nbsp;J. Nathan Kutz ,&nbsp;Ivette Rodriguez ,&nbsp;Oriol Lehmkuhl","doi":"10.1016/j.compfluid.2025.106797","DOIUrl":"10.1016/j.compfluid.2025.106797","url":null,"abstract":"<div><div>This manuscript introduces GAVI (<strong>G</strong>eometry <strong>A</strong>gnostic <strong>V</strong>ariational-autoencoder <strong>I</strong>ntegration), a scalable technique for model order reduction of terabyte-level state spaces. Such methodology is agnostic to the spatial location of the data points, hence, it can handle any complex geometry regardless of the grid type in which it is represented. The dimensionality reduction of GAVI is performed on two separate steps. First, a parallel QR factorization is applied to the snapshot matrix to decompose, then a variational autoencoder learns a latent representation of the reduced R matrix. The final step can be done at laptop level regardless of the size of the original data. The methodology is used to compress the streamwise velocity component of the flow around a circular cylinder at <span><math><mrow><mi>R</mi><msub><mrow><mi>e</mi></mrow><mrow><mi>D</mi></mrow></msub><mo>=</mo><msub><mrow><mi>U</mi></mrow><mrow><mi>∞</mi></mrow></msub><mi>D</mi><mo>/</mo><mi>ν</mi><mo>=</mo><mn>1</mn><msup><mrow><mn>0</mn></mrow><mrow><mn>4</mn></mrow></msup></mrow></math></span>, the pressure coefficient of the flow around the Windsor body at <span><math><mrow><mi>R</mi><msub><mrow><mi>e</mi></mrow><mrow><mi>L</mi></mrow></msub><mo>=</mo><msub><mrow><mi>U</mi></mrow><mrow><mi>∞</mi></mrow></msub><mi>L</mi><mo>/</mo><mi>ν</mi><mo>=</mo><mn>2</mn><mo>.</mo><mn>9</mn><mo>×</mo><mn>1</mn><msup><mrow><mn>0</mn></mrow><mrow><mn>6</mn></mrow></msup></mrow></math></span> and the streamwise velocity of the realistic urban flow in the Zona Universitària neighborhood located in Barcelona. The latter example is the most demanding one as the 1032 snapshots, which are represented on an unstructured grid of 335 million points, have a total size of 2.05 Tb. GAVI can compress the full dataset into 6 latent vectors that recover up to the 95.29% of the energy.</div></div>","PeriodicalId":287,"journal":{"name":"Computers & Fluids","volume":"302 ","pages":"Article 106797"},"PeriodicalIF":3.0,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145005031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Direct Discontinuous Galerkin methods for the reacting multi-component flow equations 反应多组分流动方程的直接不连续伽辽金方法
IF 3 3区 工程技术
Computers & Fluids Pub Date : 2025-08-13 DOI: 10.1016/j.compfluid.2025.106774
G. Absillis , H. Luo , P. Greene , R. Nourgaliev , M. Goodson
{"title":"Direct Discontinuous Galerkin methods for the reacting multi-component flow equations","authors":"G. Absillis ,&nbsp;H. Luo ,&nbsp;P. Greene ,&nbsp;R. Nourgaliev ,&nbsp;M. Goodson","doi":"10.1016/j.compfluid.2025.106774","DOIUrl":"10.1016/j.compfluid.2025.106774","url":null,"abstract":"<div><div>The Direct Discontinuous Galerkin (DDG (Liu and Yan, 2008)) method and a counterpart with Interface Correction (DDGIC (Danis and Yan, 2022)) are extended to compute diffusion terms that arise when solving the compressible multi-component flow equations in thermochemical nonequilibrium. Thermodynamic properties, transport properties, chemical reaction rates, and energy exchange terms are computed using Mutation++ (Scoggins et al., 2020). The DG method is applied on unstructured grids, where the accuracy and convergence rates can be sensitive to the numerical method chosen for parabolic terms. A method for determining the homogeneity tensor of the flow equations required for DDGIC is shown. The convergence properties of the DDG methods are studied and compared to the Interior Penalty (IP) method. A number of numerical experiments are conducted to assess the accuracy and performance of the method. The numerical results and convergence studies indicate that DDG and DDGIC provide accurate solutions and perform well for general flows in thermochemical nonequilibrium.</div></div>","PeriodicalId":287,"journal":{"name":"Computers & Fluids","volume":"301 ","pages":"Article 106774"},"PeriodicalIF":3.0,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144863888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 positive-preserving unified gas-kinetic scheme for radiative transfer equations in cylindrical coordinates 柱面坐标系下辐射传递方程的正保持统一气体动力学格式
IF 3 3区 工程技术
Computers & Fluids Pub Date : 2025-08-11 DOI: 10.1016/j.compfluid.2025.106770
Yi Wang , Shuang Tan , Guoxi Ni , Yanli Wang
{"title":"A positive-preserving unified gas-kinetic scheme for radiative transfer equations in cylindrical coordinates","authors":"Yi Wang ,&nbsp;Shuang Tan ,&nbsp;Guoxi Ni ,&nbsp;Yanli Wang","doi":"10.1016/j.compfluid.2025.106770","DOIUrl":"10.1016/j.compfluid.2025.106770","url":null,"abstract":"<div><div>The radiative transfer equations (RTEs) are important in the study of inertial confinement fusion (ICF). Cylindrical configurations are commonly employed in ICF studies, such as at the National Ignition Facility. Therefore we focus on numerical schemes for RTEs in cylindrical coordinates. Based on the unified gas-kinetic scheme (UGKS), a positive-preserving and asymptotic-preserving scheme is proposed. First, the kinetic equation in RTEs is decomposed into the rotation part and the transport-absorption part using a splitting strategy. The rotation part is solved using the positive-preserving semi-Lagrangian method. The positive-preserving scheme for the transport-absorption part is derived by establishing the equivalence between the time evolution solver and the update formula. Compared to previous studies, our scheme enables arbitrarily high-order reconstruction in both spatial and velocity spaces while preserving the positive-preserving property. Additionally, the asymptotic-preserving property is proven. Various numerical experiments confirm the high-order accuracy, positive-preserving property, and asymptotic-preserving property of our scheme.</div></div>","PeriodicalId":287,"journal":{"name":"Computers & Fluids","volume":"301 ","pages":"Article 106770"},"PeriodicalIF":3.0,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144810659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Direct numerical simulation of smooth-body flow separation around a ramp 坡道周围光滑体流分离的直接数值模拟
IF 3 3区 工程技术
Computers & Fluids Pub Date : 2025-08-09 DOI: 10.1016/j.compfluid.2025.106779
Ali Uzun , Mujeeb R. Malik
{"title":"Direct numerical simulation of smooth-body flow separation around a ramp","authors":"Ali Uzun ,&nbsp;Mujeeb R. Malik","doi":"10.1016/j.compfluid.2025.106779","DOIUrl":"10.1016/j.compfluid.2025.106779","url":null,"abstract":"<div><div>Spanwise-periodic computation of a turbulent flow past a two-dimensional smooth ramp geometry is performed in the form of a direct numerical simulation. The Reynolds number based on the ramp height is about 147,000. A straight section that precedes the smooth ramp allows the incoming turbulent boundary layer to grow under a weak favorable pressure gradient. The boundary layer introduced at the domain inlet has a momentum-thickness based Reynolds number of 2000. The turbulent boundary layer nearing the ramp first interacts with a relatively stronger favorable pressure gradient, followed by a strong adverse pressure gradient. Consequently, the boundary layer experiences a modest acceleration before decelerating and separating. Analysis of the data over this region hints at the formation of an internal layer beneath the accelerated boundary layer. The analysis also reveals that this internal layer forms the origin of the free shear layer that emerges in the deceleration region and separates. The streamwise extent of the separated region is comparable to the ramp length, while the viscous layer thickness near reattachment is about the same as the ramp height; hence, the boundary layer undergoing separation and subsequent reattachment in the present configuration experiences its thickness being amplified by about tenfold. The reattached flow continues to develop further under a diminishing pressure gradient in the recovery region in a similar fashion to a zero pressure gradient turbulent boundary layer.</div></div>","PeriodicalId":287,"journal":{"name":"Computers & Fluids","volume":"301 ","pages":"Article 106779"},"PeriodicalIF":3.0,"publicationDate":"2025-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144852476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Hybrid quantum physics-informed neural network: Towards efficient learning of high-speed flows 混合量子物理信息神经网络:迈向高速流的有效学习
IF 3 3区 工程技术
Computers & Fluids Pub Date : 2025-08-08 DOI: 10.1016/j.compfluid.2025.106782
Fong Yew Leong, Wei-Bin Ewe, Si Bui Quang Tran, Zhongyuan Zhang, Jun Yong Khoo
{"title":"Hybrid quantum physics-informed neural network: Towards efficient learning of high-speed flows","authors":"Fong Yew Leong,&nbsp;Wei-Bin Ewe,&nbsp;Si Bui Quang Tran,&nbsp;Zhongyuan Zhang,&nbsp;Jun Yong Khoo","doi":"10.1016/j.compfluid.2025.106782","DOIUrl":"10.1016/j.compfluid.2025.106782","url":null,"abstract":"<div><div>This study benchmarks hybrid quantum physics-informed neural network (HQPINN) to model high-speed flows, compared against classical physics-informed neural networks (PINNs) and fully quantum neural networks (QNNs). The HQPINN architecture integrates a parameterized quantum circuit (PQC) with a classical neural network in parallel, trained via a physics-informed loss. Across harmonic, non-harmonic, and transonic benchmarks, HQPINNs demonstrate balanced performance, offering competitive accuracy and stability with reduced parameter cost. Quantum PINNs are highly efficient for harmonic problems achieving the lowest loss with minimal parameters due to their Fourier structure, but struggle to generalize in non-harmonic settings involving shocks and discontinuities. HQPINNs mitigate such artifacts, and with sufficient parameterization, can match the performance of classical models in more complex regimes. Although constrained by current quantum emulation costs and scalability, HQPINNs show promise as general-purpose solvers, offering parameter efficiency with robust fallback behavior, particularly suited for problems where the nature of the solution is not known <em>a-priori</em>.</div></div>","PeriodicalId":287,"journal":{"name":"Computers & Fluids","volume":"301 ","pages":"Article 106782"},"PeriodicalIF":3.0,"publicationDate":"2025-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144842369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Eulerian modeling of compressible multicomponent elastic materials 可压缩多组分弹性材料的欧拉模型
IF 3 3区 工程技术
Computers & Fluids Pub Date : 2025-08-08 DOI: 10.1016/j.compfluid.2025.106778
A. Serezhkin, I. Menshov
{"title":"Eulerian modeling of compressible multicomponent elastic materials","authors":"A. Serezhkin,&nbsp;I. Menshov","doi":"10.1016/j.compfluid.2025.106778","DOIUrl":"10.1016/j.compfluid.2025.106778","url":null,"abstract":"<div><div>An Eulerian numerical model is developed for calculating dynamic processes in multimaterial elastic media. Accurate and correct description of the interaction of materials on the surface of the interface and the dynamics of the interface itself is inevitably required. Problems with large deformation of the interface cause serious difficulty when using Lagrangian numerical methods as they lead to strong distortion of the computational grid and loss of the accuracy. For such problems, so-called diffuse interface models are more preferred allowing one to track the interface and calculate the propagation of perturbations due to the interaction of materials on a fixed grid with a larger degree of accuracy. However, most of such models consider the dynamics of the medium in the hydrodynamic approach. The present paper is devoted to the extension of the class of diffuse interface models to the elastoplastic rheology of materials. The two-material model proposed is basically the extension of the hydrodynamic Baer–Nunziato two-phase model to hypoelastic materials. Numerical results demonstrate the capabilities of the model to accurately simulate wave processes in multimaterial media.</div></div>","PeriodicalId":287,"journal":{"name":"Computers & Fluids","volume":"301 ","pages":"Article 106778"},"PeriodicalIF":3.0,"publicationDate":"2025-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144829071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
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