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22 036 (0,091s)

Výsledek výzkumu

Separability conditions for the vector Helmholtz equation

Separability conditions for the vector Helmholtz equation...

DE - Zemský magnetismus, geodesie, geografie

  • 2002
  • Jx
Výsledek výzkumu

Ultrasound Simulation Using Helmholtz Equation

Software for computing Helmholtz equation by means of finite element method...

JA - Elektronika a optoelektronika, elektrotechnika

  • 2010
  • R
Výsledek výzkumu

Numerical solution of Helmholtz equation by boundary element method

We study a method of solution of exterior time-harmonic acoustic wave problem described by Helmholtz equations using boudary element technique....

BI - Akustika a kmity

  • 2007
  • D
Výsledek výzkumu

Helmholtz conditions in the geometry of second order ordinary differential equations

Helmholtz conditions (necessary and sufficient conditions of existence of a Lagrangian for a system of second order ordinary differential equations) carry a lot of geometric information about variational equations. Some of ...

BA - Obecná matematika

  • 2007
  • C
Výsledek výzkumu

Maxwell equations in the problems with periodical boundary. Part II: Boundary integral equations

Solution of a diffraction problem on periodical boundary. Solution of Helmholtz equation using transition to boundary integral equation. Analysing existence and uniqueness of the solution....

BB - Aplikovaná statistika, operační výzkum

  • 2007
  • D
Výsledek výzkumu

The Helmholtz Conditions and the Method of Controlled Lagrangians

The inverse problem for systems of second-order ordinary differential equations is studied. New ideas are introduced for possible applications of the inverse problem and the Helmholtz conditions to control and stabilization of mecha...

BA - Obecná matematika

  • 2015
  • C
  • Odkaz
Výsledek výzkumu

Helmholtz conditions and their generalizations

equations. We find identities, that are a generalization of the Helmholtz conditions that the kernel of the Helmholtz morphism E2 consists of locally variational dynamical forms, and is characterized by Helmholtz ...

BA - Obecná matematika

  • 2010
  • Jx
Výsledek výzkumu

Helmholtz conditions and their generalizations

equations. We find identities, that are a generalization of the Helmholtz conditions that the kernel of the Helmholtz morphism E2 consists of locally variational dynamical forms, and is characterized by Helmholtz ...

BA - Obecná matematika

  • 2010
  • Jx
Výsledek výzkumu

Effective semi-analytic integration for hypersingular Galerkin boundary integral equations for the Helmholtz equation in 3D

We deal with the Galerkin discretization of the boundary integral equations corresponding to problems with the Helmholtz equation in 3D. Our main result is the semi-analytic integration for the bilinear form induced by the ...

BA - Obecná matematika

  • 2014
  • Jx
  • Odkaz
Výsledek výzkumu

On a topology optimization problem governed by two-dimensional Helmholtz equation

The paper deals with a class of shape/topology optimization problems governed by the Helmholtz equation in 2D. Two numerical methods for solving such problems are proposed and theoretically justified: a direct discretization of the ...

BA - Obecná matematika

  • 2015
  • Jx
  • Odkaz
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