unstructured grid


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unstructured grid

[¦ən·strək·chərd ′grid]
(mathematics)
In the discretization of partial differential equations, a collection of triangular elements or a random distribution of points at which the equations are expressed in discrete form.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
However, the unstructured grid proposed in that paper will be very difficult to implement in an inversion program.
So the grid division adopts the tetrahedral grid form of the unstructured grid. According to literature [14], this unstructured tetrahedral grid can well reflect the flow field of the respiratory tracts.
Gong, "Particle transport with unstructured grid on GPU," Computer Physics Communications, vol.
A three-dimensional Navier-Stokes equations solver with an unstructured grid, SURF (Hino, 1997; Sato and Hino, 2010), is employed for the CFD simulation.
Structured grid is also known as FDM [6, 7] grid, that is difference grid, unstructured grid FEM mesh is also known that the finite element mesh.
The manner in which the unstructured grid is distributed follows the basic rules that 12 in.
He introduces key concepts and generalized function theory; elaborates on the Euler equations and definitions and assumptions used throughout the treatment; discusses the theory in relation to one-dimensional and quasi-one-dimensional Euler equations; applies shock fitting techniques to two-dimensional flows, specifically in reference to the problems of the classical blunt body problem, conical flow over an external corner, and steady supersonic flow; and considers current and future developments in shock-fitting methods within the context of unstructured grid methods.
Capability: The Tetrahedral Unstructured Software System, or Tetruss, is an unstructured grid flow analysis and design computational fluid dynamic software application.
It uses cell-centered numerics, via a segregated approach, on a collocated, unstructured grid. The Delayed DES (DDES) method with the standard Spalart Allmaras (SA) model was used.
Lohner, "Three-dimensional parallel unstructured grid generation," International Journal for Numerical Methods in Engineering, vol.
In the present paper we discuss the use of multigrid methods for Large-Eddy Simulation in a parallel unstructured grid environment.