• An eikonal equation (from Greek εἰκών, image) is a non-linear first-order partial differential equation that is encountered in problems of wave propagation...
    23 KB (3,769 words) - 15:23, 6 January 2024
  • Eikonal is the German form of the Greek word εἰκών, meaning likeness, icon or image. It can refer to: Eikonal equation, a non-linear partial differential...
    487 bytes (90 words) - 12:31, 1 November 2015
  • physics, the eikonal approximation (Greek εἰκών for likeness, icon or image) is an approximative method useful in wave scattering equations, which occur...
    4 KB (608 words) - 14:50, 13 February 2024
  • recommendation. Solve the eikonal equation. The first two are only of 1st order approximation (see Orders of approximation). For the eikonal equation, many numerical...
    11 KB (1,418 words) - 14:08, 3 May 2023
  • Fast sweeping method (category Numerical differential equations)
    method is a numerical method for solving boundary value problems of the Eikonal equation. | ∇ u ( x ) | = 1 f ( x )  for  x ∈ Ω {\displaystyle |\nabla u(\mathbf...
    2 KB (292 words) - 05:40, 19 May 2024
  • first equation is known as the eikonal equation, which determines the eikonal S ( r ) {\displaystyle S(\mathbf {r} )} is a Hamilton–Jacobi equation, written...
    29 KB (4,688 words) - 19:09, 15 May 2024
  • Thumbnail for Fast marching method
    Fast marching method (category Numerical differential equations)
    created by James Sethian for solving boundary value problems of the Eikonal equation: | ∇ u ( x ) | = 1 / f ( x )  for  x ∈ Ω {\displaystyle |\nabla u(x)|=1/f(x){\text{...
    5 KB (718 words) - 04:07, 22 August 2023
  • Thumbnail for Signed distance function
    is differentiable almost everywhere, and its gradient satisfies the eikonal equation | ∇ f | = 1. {\displaystyle |\nabla f|=1.} If the boundary of Ω is...
    11 KB (1,359 words) - 07:47, 15 July 2024
  • This is due to this being effectively the temporal integration of the Eikonal equation with a fixed front velocity. In mathematical modeling of combustion...
    10 KB (1,222 words) - 20:58, 27 June 2024
  • Thumbnail for Mild-slope equation
    phase θ {\displaystyle \theta } , a scalar field. The second equation is the eikonal equation. It shows the effects of diffraction on the effective wavenumber:...
    25 KB (4,161 words) - 08:20, 12 June 2024