Review and recent developments on the perfectly matched layer (PML) method for the numerical modeling and simulation of elastic wave propagation in unbounded …

F Pled, C Desceliers - Archives of Computational Methods in Engineering, 2022 - Springer
This review article revisits and outlines the perfectly matched layer (PML) method and its
various formulations developed over the past 25 years for the numerical modeling and …

[HTML][HTML] Airfoil trailing-edge noise and drag reduction at a moderate Reynolds number using wavy geometries

TA Smith, CA Klettner - Physics of Fluids, 2022 - pubs.aip.org
This study utilizes a hybrid aeroacoustic model to investigate how airfoils with spanwise
wavy geometries can be used to reduce trailing-edge noise alongside improving the …

[HTML][HTML] 修正辛格式有限元法的地震波场模拟

苏波, 李怀良, 刘少林, 杨顶辉 - 地球物理学报, 2019 - html.rhhz.net
三角网格有限元法具有网格剖分的灵活性, 能有效模拟地震波在复杂介质中的传播.
但传统有限元法用于地震波场模拟时计算效率较低, 消耗较大计算资源. 本文采用改进的核矩阵 …

[图书][B] A toolbox for digital twins: from model-based to data-driven

M Asch - 2022 - SIAM
A digital twin (DT) is a numerical model (in silico) of a system that runs alongside its physical
counterpart and exchanges (bidirectional) information with it. The digital twin, once suitably …

An improved hybrid absorbing boundary condition for wave equation modeling

Y Liu, MK Sen - Journal of Geophysics and Engineering, 2018 - academic.oup.com
A recently developed hybrid absorbing boundary condition (ABC) can significantly suppress
artificial boundary reflections by inserting a transition area between the boundary and the …

A hybrid computational aeroacoustic model with application to turbulent flows over foil and bluff bodies

TA Smith, Y Ventikos - Journal of Sound and Vibration, 2022 - Elsevier
In this study, a versatile and general three-dimensional hybrid aeroacoustic model is
presented for low Mach number turbulent flows. A dual-domain approach is adopted, with …

A new hybrid optimization approach using PSO, Nelder-Mead Simplex and Kmeans clustering algorithms for 1D Full Waveform Inversion

R Aguiar Nascimento, ÁB Neto, YSF Bezerra… - PloS one, 2022 - journals.plos.org
The FWI is formulated as a nonlinear optimization problem that traditionally uses local
(derivative-based) minimization to find the scalar field of properties that best represents the …

Reducing error accumulation of optimized finite-difference scheme using the minimum norm

Z Miao, J Zhang - Geophysics, 2020 - pubs.geoscienceworld.org
The finite-difference (FD) scheme is popular in the field of seismic exploration for numerical
simulation of wave propagation; however, its accuracy and computational efficiency are …

[HTML][HTML] Designing CFD methods for bandwidth—a physical approach

P Roe - Computers & Fluids, 2021 - Elsevier
A hoped-for outcome from high-order CFD methods, in addition to achieving accurate
solutions on fine grids, is to achieve useful answers on coarse grids. In this paper we note …

A level-set approach based on reaction–diffusion equation applied to inversion problems in acoustic wave propagation

DL Lanznaster, PB De Castro, H Emmendoerfer… - Inverse …, 2021 - iopscience.iop.org
In this work, a topology optimization procedure based on the level-set method is applied to
the solution of inverse problems for acoustic wave propagation in the time-domain. In this …