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Что (кто) такое boundary conditions - определение
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Boundary conditions in fluid dynamics
Boundary conditions in fluid dynamics are the set of constraints to boundary value problems in computational fluid dynamics. These boundary conditions include inlet boundary conditions, outlet boundary conditions, wall boundary conditions, constant pressure boundary conditions, axisymmetric boundary conditions, symmetric boundary conditions, and periodic or cyclic boundary conditions.
Robin boundary condition
CLASS OF PROBLEMS IN PDES
Impedance boundary condition; Impedance Boundary Condition; Robin boundary conditions; Third type boundary condition; Impedance boundary conditions; Insulating boundary condition
In mathematics, the Robin boundary condition (; properly ), or third type boundary condition, is a type of boundary condition, named after Victor Gustave Robin (1855–1897).Gustafson, K.
Mixed boundary condition
MATHEMATICAL PROBLEM
Mixed boundary conditions
In mathematics, a mixed boundary condition for a partial differential equation defines a boundary value problem in which the solution of the given equation is required to satisfy different boundary conditions on disjoint parts of the boundary of the domain where the condition is stated. Precisely, in a mixed boundary value problem, the solution is required to satisfy a Dirichlet or a Neumann boundary condition in a mutually exclusive way on disjoint parts of the boundary.
Free boundary condition
In image processing, the free boundary condition is the convention used when applying a convolution kernel to a digital image in which pixel locations that lie outside the image boundaries are interpreted as having a value of zero.The question of what value to assign out-of-bounds pixels may arise, for instance, when applying a 3×3 kernel to the corner pixel in an image.
Dirichlet boundary condition
TYPE OF CONSTRAINT ON SOLUTIONS TO DIFFERENTIAL EQUATIONS
Dirichlet boundary conditions; Dirichlet BC; Dirichlet condition; Dirichlet data; First-type boundary condition; Fixed boundary condition
In the mathematical study of differential equations, the Dirichlet (or first-type) boundary condition is a type of boundary condition, named after Peter Gustav Lejeune Dirichlet (1805–1859). When imposed on an ordinary or a partial differential equation, it specifies the values that a solution needs to take along the boundary of the domain.
Cauchy boundary condition
In mathematics, a Cauchy () boundary condition augments an ordinary differential equation or a partial differential equation with conditions that the solution must satisfy on the boundary; ideally so as to ensure that a unique solution exists. A Cauchy boundary condition specifies both the function value and normal derivative on the boundary of the domain.
Neumann boundary condition
In mathematics, the Neumann (or second-type) boundary condition is a type of boundary condition, named after Carl Neumann.
Boundary (topology)
![Boundary of hyperbolic components of [[Mandelbrot set]]](https://commons.wikimedia.org/wiki/Special:FilePath/Mandelbrot Components.svg?width=200 "Boundary of hyperbolic components of [[Mandelbrot set]]")
DIVIDING LINE BETWEEN TWO AREAS OR SETS OF POINTS IN A TOPOLOGICAL SPACE; DIFFERENCE BETWEEN THE CLOSURE AND THE INTERIOR
Boundary point; Boundary points; Frontier (mathematics); Boundary component; Boundary set; Frontier (topology); Boundary (algebraic topology); Boundary of a set; Boundary Functions; Boundary (mathematics); Topological boundary; Boundary (geometry)
In topology and mathematics in general, the boundary of a subset of a topological space is the set of points in the closure of not belonging to the interior of . An element of the boundary of is called a boundary point of .
Helical boundary conditions
In mathematics, helical boundary conditions are a variation on periodic boundary conditions. Helical boundary conditions provide a method for determining the index of a lattice site's neighbours when each lattice site is indexed by just a single coordinate.
K/T boundary
![Luis]] (left) and his son [[Walter Alvarez]] (right) at the K-T Boundary in [[Gubbio]], Italy, 1981](https://commons.wikimedia.org/wiki/Special:FilePath/LWA with Walt.JPG?width=200 "Luis]] (left) and his son [[Walter Alvarez]] (right) at the K-T Boundary in [[Gubbio]], Italy, 1981")
GEOLOGICAL SIGNATURE, USUALLY A THIN BAND OF ROCK, MARKING THE TRANSITION FROM THE END OF THE CRETACEOUS PERIOD AND THE BEGINNING OF THE PALEOGENE PERIOD, DATED WITH RADIOMETRIC METHODS, AT THE AGE OF 66.043 ± 0.011 MA
K-T boundary; K-T layer; KT boundary; KT Boundary; Kt boundary; C-T boundary; K/T impact; K-T impact; Cretaceous-Paleogene boundary; K-t boundary; K-T Boundary; K–T boundary extinction mechanisms; K–Pg boundary; K-Pg boundary; K-T boundary extinction mechanisms; K/T boundary; K-T Line; K–T boundary; Cretaceous–Tertiary boundary; Cretaceous-Tertiary boundary
¦ noun Geology the boundary between the Cretaceous and Tertiary periods, about 65 million years ago, marked by the extinction of dinosaurs and many other groups of animals.
Origin
from symbols for Cretaceous and Tertiary.
