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Characterization of phases of soft matter systems is a challenge faced in many physicochemical problems. For polymorphic fluids it is an even greater challenge. Specifically, glass forming fluids, as water, can have, besides solid…

软凝聚态物质 · 物理学 2021-12-15 Vinicius F. Hernandes , Murilo S. Marques , José R. Bordin

Properties of classical molecular systems can be calculated with integral equation theories based on the Ornstein-Zernike (OZ) equation and a complementing closure relation. One such closure relation is the hyper netted chain (HNC)…

统计力学 · 物理学 2025-05-26 Martin Panholzer , Michael Haring , Thomas Wallek , Robert E. Zillich

A method of representation of a solution as segments of the series in powers of the step of the independent variable is expanded for solving complex systems of ordinary differential equations (ODE): the Lorenz system and other systems. A…

数值分析 · 计算机科学 2014-05-26 Vladimir Aristov , Andrey Stroganov

One of the biggest challenges for simulating the Boltzmann equation is the evaluation of fivefold collision integral. Given the recent successes of deep learning and the availability of efficient tools, it is an obvious idea to try to…

计算物理 · 物理学 2021-07-28 Tianbai Xiao , Martin Frank

Incorporating computational fluid dynamics in the design process of jets, spacecraft, or gas turbine engines is often challenged by the required computational resources and simulation time, which depend on the chosen physics-based…

计算物理 · 物理学 2019-12-09 Cristina White , Daniela Ushizima , Charbel Farhat

Fluid data completion is a research problem with high potential benefit for both experimental and computational fluid dynamics. An effective fluid data completion method reduces the required number of sensors in a fluid dynamics experiment,…

机器学习 · 计算机科学 2024-02-28 Dule Shu , Wilson Zhen , Zijie Li , Amir Barati Farimani

In this paper a problem of stationary flow of generalized Newtonian fluid in a thin channel is considered. An efficient algorithm of solution is proposed that includes a flexible procedure for a continuous approximation of the apparent…

流体动力学 · 物理学 2020-08-18 Michal Wrobel

Using liquid integral equation theory, we calculate the pair correlations of particles that interact via a smooth repulsive pair potential in d = 4 spatial dimensions. We discuss the performance of different closures for the…

软凝聚态物质 · 物理学 2015-10-09 M. Heinen , J. Horbach , H. Löwen

This work presents a novel methodology for analysis and control of nonlinear fluid systems using neural networks. The approach is demonstrated on four different study cases being the Lorenz system, a modified version of the…

流体动力学 · 物理学 2023-08-28 Tarcísio Déda , William Wolf , Scott Dawson

The interaction of neural networks with physical equations offers a wide range of applications. We provide a method which enables a neural network to transform objects subject to given physical constraints. Therefore an U-Net architecture…

人工智能 · 计算机科学 2021-03-22 Lukas Harsch , Johannes Burgbacher , Stefan Riedelbauch

A finite element method for solving nonlinear differential equations on a grid, with potential applicability to computational fluid dynamics (CFD), is developed and tested. The current method facilitates the computation of solutions of a…

计算物理 · 物理学 2014-09-04 Jesper Tveit

The structural properties of single component fluids of hard hyperspheres in odd space dimensionalities $d$ are studied with an analytical approximation method that generalizes the Rational Function Approximation earlier introduced in the…

统计力学 · 物理学 2011-11-10 Rene D. Rohrmann , Andres Santos

Solving for detailed chemical kinetics remains one of the major bottlenecks for computational fluid dynamics simulations of reacting flows using a finite-rate-chemistry approach. This has motivated the use of fully connected artificial…

计算工程、金融与科学 · 计算机科学 2021-10-11 Opeoluwa Owoyele , Pinaki Pal

We investigate the spatial structure of dense square-shoulder fluids. To this end we derive analytical perturbative solutions of the Ornstein-Zernike equation in the low- and high-temperature limits as expansions around the known hard…

统计力学 · 物理学 2020-06-08 O. Coquand , M. Sperl

This paper employs physics-informed neural networks (PINNs) to solve Fisher's equation, a fundamental reaction-diffusion system with both simplicity and significance. The focus is on investigating Fisher's equation under conditions of large…

机器学习 · 计算机科学 2024-11-20 Franz M. Rohrhofer , Stefan Posch , Clemens Gößnitzer , Bernhard C. Geiger

In this work we approach the Schr\"odinger equation in quantum wells with arbitrary potentials, using the machine learning technique. Two neural networks with different architectures are proposed and trained using a set of potentials,…

计算物理 · 物理学 2022-02-22 Adrian Radu , Carlos A. Duque

This paper solves the discretised multiphase flow equations using tools and methods from machine-learning libraries. The idea comes from the observation that convolutional layers can be used to express a discretisation as a neural network…

Fluid simulation is an important research topic in computer graphics (CG) and animation in video games. Traditional methods based on Navier-Stokes equations are computationally expensive. In this paper, we treat fluid motion as point cloud…

计算机视觉与模式识别 · 计算机科学 2025-01-07 Yu Chen , Shuai Zheng , Nianyi Wang , Menglong Jin , Yan Chang

The neural network method of solving differential equations is used to approximate the electric potential and corresponding electric field in the slit-well microfluidic device. The device's geometry is non-convex, making this a challenging…

计算物理 · 物理学 2020-07-29 Martin Magill , Andrew M. Nagel , Hendrick W. de Haan

In this work, we study the Galerkin-Boltzmann formulation within a physics-informed neural network (PINN) framework to solve flow problems in weakly compressible regimes. The Galerkin-Boltzmann equations are discretized with second-order…

流体动力学 · 物理学 2024-09-11 Atakan Aygun , Ali Karakus