Results 11 to 20 of about 16,809 (204)

Hybrid of differential quadrature and sub-gradients methods for solving the system of Eikonal equations

open access: yesNonlinear Engineering, 2021
Many important natural phenomena of wave propagations are modeled by Eikonal equations and a variety of new methods are needed to solve them. The differential quadrature method (DQM) is an effective numerical method for solving the system of differential
Meher Mehrollah, Rostamy Davood
doaj   +1 more source

Three-dimensional acoustic vector field model using Gaussian beam tracing [PDF]

open access: yesJASA Express Letters, 2023
A three-dimensional acoustic vector field model was developed using Gaussian beam tracing. The field at any location is computed by coherently summing all contributing beams, where the beam equation of particle velocity depends only on beam width and ...
Yuchen Chen, Minghui Zhang, Lijia Gong
doaj   +1 more source

Numerical Solutions to Wave Propagation and Heat Transfer Non-Linear PDEs by Using a Meshless Method

open access: yesMathematics, 2022
The applications of the Eikonal and stationary heat transfer equations in broad fields of science and engineering are the motivation to present an implementation, not only valid for structured domains but also for completely irregular domains, of the ...
Jesús Flores   +5 more
doaj   +1 more source

Eikonal Equation Reproduces Natural Landscapes With Threshold Hillslopes

open access: yesGeophysical Research Letters, 2023
Many natural landscapes maintain steep planar hillslopes bounded at a typical angle, beyond which shallow landslides or slope failures remove the excess sediment volume by mass wasting.
Shashank Kumar Anand   +3 more
doaj   +1 more source

A Unified Shape-From-Shading Approach for 3D Surface Reconstruction Using Fast Eikonal Solvers

open access: yesInternational Journal of Optics, 2020
Object shape reconstruction from images has been an active topic in computer vision. Shape-from-shading (SFS) is an important approach for inferring 3D surface from a single shading image.
Guohui Wang, Xuan Zhang, Jin Cheng
doaj   +1 more source

EikoNet traveltime calculation method and application based on deep neural network

open access: yes地球与行星物理论评, 2023
Seismic wave traveltime calculation plays an important role in many areas of seismology, such as seismic tomography, migration and microseismic location.
Shi Yao   +5 more
doaj   +1 more source

Unifying approaches: derivation of Balitsky hierarchy from the Lipatov effective action

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
We consider a derivation of the hierarchy of correlators of ordered exponentials directly from the Lipatov’s effective action (Lipatov in Nucl Phys B 452:369, 1995; Phys Rep 286:131, 1997; Subnucl Ser 49:131, 2013; Int J Mod Phys Conf Ser 39: 1560082 ...
S. Bondarenko   +2 more
doaj   +1 more source

Numerical analysis of eikonal equation [PDF]

open access: yesSaratov Fall Meeting 2018: Laser Physics, Photonic Technologies, and Molecular Modeling, 2019
The Maxwell equations have a fairly simple form. However, finding solutions of Maxwell's equations is an extremely difficult task. Therefore, various simplifying approaches are often used in optics. One such simplifying approach is to use the approximation of geometric optics.
Kulyabov D.S.   +3 more
openaire   +3 more sources

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