Lattice Boltzmann Method for Fluid-Structure Interaction with incompressible NeoHookean materials in small perturbationsThis paper deals with the numerical modelling of the interaction between a fluid and an incompressible solid (Neo Hookean) in small perturbations with the lattice Boltzmann method (LBM). In order to…Sébastien Mey, Erwan Liberge, Claudine Béghein·Nov 18, 2019SaveLearn
The Strongly Coupled Electron Liquid: ab initio Path Integral Monte Carlo Simulations and Dielectric TheoriesThe strongly coupled electron liquid provides a unique opportunity to study the complex interplay of strong coupling with quantum degeneracy effects and thermal excitations. To this end, we carry out…Tobias Dornheim, Travis Sjostrom, Shigenori Tanaka et al.·Nov 18, 2019SaveLearn
Exponential Integrators for Stochastic Schrödinger EquationWe present a class of exponential integrators to compute solutions of the stochastic Schrödinger equation arising from the modeling of open quantum systems. In order to be able to implement the…Jingze Li, Xiantao Li·Nov 18, 2019SaveLearn
Cellular automaton model for substitutional binary diffusion in solidsIn this paper we use the cellular automaton (CA) approach to model one-dimensional binary diffusion in solids. Employing a very simple state change rule we define an asynchronous CA model and take…Helena Ribera, Brian Wetton, Timothy Myers·Nov 17, 2019SaveLearn
An accurate moving wall boundary algorithm for Direct Simulation of Monte Carlo in unsteady rarefied flowAn accurate algorithm is proposed to improve the prediction of a particle in collision with a moving wall within the direct simulation Monte Carlo (DSMC) framework for the simulation of unsteady…He Zhang, Fanli Shan, Hong Fang et al.·Nov 16, 2019SaveLearn
Key to understanding supersonic radiative Marshak waves using simple models and advanced simulationsThis article studies the propagation of supersonic radiative Marshak waves. These waves are radiation dominated, and play an important role in inertial confinement fusion and in astrophysical and…Avner P. Cohen, Guy Malamud, Shay I. Heizler·Nov 16, 2019SaveLearn
Enforcing Deterministic Constraints on Generative Adversarial Networks for Emulating Physical SystemsGenerative adversarial networks (GANs) were initially proposed to generate images by learning from a large number of samples. Recently, GANs have been used to emulate complex physical systems such as…Zeng Yang, Jin-Long Wu, Heng Xiao·Nov 15, 2019SaveLearn
Energy Minimization and Preconditioning in the Simulation of Athermal Granular Materials in Two DimensionsGranular materials are heterogenous grains in contact, which are ubiquitous in many scientific and engineering applications such as chemical engineering, fluid mechanics, geomechanics, pharmaceutics,…Haolei Wang, Lei Zhang·Nov 15, 2019SaveLearn
Low Order Finite Element Methods for the Navier-Stokes-Cahn-Hilliard EquationsA computationally efficient, low order finite element formulation is developed for modelling the Navier-Stokes-Cahn-Hilliard equations, which have been established as a promising phase field…Aleksander Lovrić, Wulf G. Dettmer, Djordje Perić·Nov 15, 2019SaveLearn
Enforcing Boundary Conditions on Physical Fields in Bayesian InversionInverse problems in computational mechanics consist of inferring physical fields that are latent in the model describing some observable fields. For instance, an inverse problem of interest is…Carlos A. Michelén Ströfer, Xinlei Zhang, Heng Xiao et al.·Nov 15, 2019SaveLearn
A meshfree formulation for large deformation analysis of flexoelectric structures accounting for the surface effectsIn this work, we present a compactly supported radial basis function (CSRBF) based meshfree method to analyse geometrically nonlinear flexoelectric nanostructures considering surface effects.…Xiaoying Zhuang, S. S. Nanthakumar, Timon Rabczuk·Nov 15, 2019SaveLearn
Toward Scalable Many-Body Calculations for Nuclear Open Quantum Systems using the Gamow Shell ModelDrip-line nuclei have very different properties from those of the valley of stability, as they are weakly bound and resonant. Therefore, the models devised for stable nuclei can no longer be applied…Nicolas Michel, Hasan Metin Aktulga, Yannen Jaganathen·Nov 15, 2019SaveLearn
HeTDSE: GPU based program to solve full-dimensional-time-dependent Schrödinger equation for two-electron Helium subjected to strong laser fieldsWe present a GPU based openACC fortran program named HeTDSE, which provides an efficient way to investigate the non-perturbative electronic dynamics of helium subjected to a strong laser pulse by…Changli Wei, Xi Zhao·Nov 14, 2019SaveLearn
Accelerating Least Squares Imaging Using Deep Learning TechniquesWave equation techniques have been an integral part of geophysical imaging workflows to investigate the Earth's subsurface. Least-squares reverse time migration (LSRTM) is a linearized inversion…Janaki Vamaraju, Jeremy Vila, Mauricio Araya-Polo et al.·Nov 14, 2019SaveLearn
A Forecasting System of Computational Time of DFT/TDDFT Calculations under the Multiverse ansatz via Machine Learning and CheminformaticsA top-level designed forecasting system for predicting computational times of density-functional theory (DFT)/time-dependent density-functional theory (TDDFT) calculations is presented. The…Shuo Ma, Yingjin Ma, Baohua Zhang et al.·Nov 13, 2019SaveLearn
Effect of the polar distortion on the thermoelectric properties of GeTeFirst principle calculations are performed to investigate the effect of polar order strength on the thermoelectric (TE) properties of GeTe alloy in its rhombohedral structure. The variation in the…Aida Sheibani, Charles Paillard, Abhyian Pandit et al.·Nov 13, 2019SaveLearn
Feature engineering and symbolic regression methods for detecting hidden physics from sparse sensorsIn this study we put forth a modular approach for distilling hidden flow physics in discrete and sparse observations. To address functional expressiblity, a key limitation of the black-box machine…Harsha Vaddireddy, Adil Rasheed, Anne E Staples et al.·Nov 13, 2019SaveLearn
A comparative study of some analytic approximate methods for the anharmonic oscillator described by cubic quartic potentialThe improved formulations of the Lindstedt Poincare perturbation method, the harmonic balance method and its modifications using the rational functions, the energy balance method and the two terms…Sonia, Sunita Srivastava, Vishwamittar·Nov 13, 2019SaveLearn
A scalable weakly-synchronous algorithm for solving partial differential equationsSynchronization overheads pose a major challenge as applications advance towards extreme scales. In current large-scale algorithms, synchronization as well as data communication delay the parallel…Konduri Aditya, Tobias Gysi, Grzegorz Kwasniewski et al.·Nov 13, 2019SaveLearn
An investigation of the Brumadinho Dam Break with HEC RAS simulationThe Brumadinho dam disaster occurred on the 25 January, 2019 when Dam I, an upstream tailings dam at the Corrego do Feijao iron ore mine, 9 kilometres (5.6 mi) east of Brumadinho, Minas Gerais,…Arun Raman, Fei Liu·Nov 13, 2019SaveLearn
Small Angle and Non-Monotonic Behavior of the Thermal Conductivity in Twisted Bilayer GrapheneNothing is known about the thermal conductivity in twisted bilayer graphene (TBG) at small twist angles, and how it approaches its aligned value as the twist angle approaches 0 degrees. To provide…Chenyang Li, Roger K. Lake·Nov 12, 2019SaveLearn
Turbulence forecasting via Neural ODEFluid turbulence is characterized by strong coupling across a broad range of scales. Furthermore, besides the usual local cascades, such coupling may extend to interactions that are non-local in…Gavin D. Portwood, Peetak P. Mitra, Mateus Dias Ribeiro et al.·Nov 12, 2019SaveLearn
Weak Scaling of DSA Preconditioning of Transport Sweeps using HYPREThis report summarizes the weak scaling performance of the diffusion-synthetic acceleration (DSA) of transport sweeps in PDT (a massively parallel deterministic transport solver developed at Texas…Milan Hanus·Nov 12, 2019SaveLearn
Calculation of electron-ion temperature equilibration rates and friction coefficients in plasmas and liquid metals using quantum molecular dynamicsWe discuss a method to calculate with quantum molecular dynamics simulations the rate of energy exchanges between electrons and ions in two-temperature plasmas, liquid metals and hot solids.…Jacopo Simoni, Jérôme Daligault·Nov 12, 2019SaveLearn
Tensor methods for the Boltzmann-BGK equationWe present a tensor-decomposition method to solve the Boltzmann transport equation (BTE) in the Bhatnagar-Gross-Krook approximation. The method represents the six-dimensional BTE as a set of six…Arnout Boelens, Daniele Venturi, Daniel Tartakovsky·Nov 11, 2019SaveLearn