Poisson equation solution

Source: Internet
Author: User

Original article link

Poisson equation is a mathematical partial differential equation that is common in electrostatic, mechanical engineering, and theoretical physics. It is named after French mathematicians, physicists, and physicists. Poisson Equation

 

Here, △represents the Laplace operator, while F and θ can be real or complex numerical equations on the manifold. When the manifold belongs to the Euclidean space, and the Laplace operator is usually expressed as, the Poisson equation is usually written

 

In the three-dimensional Cartesian coordinate system, it can be written

 

Without F, this equation will become the Laplace equation.

In addition

In mathematics and physics, the Laplace operator or the Laplace operator (Laplace operator or Laplacian) is a differential operator, which is generally written as a Delta or operator. It is named to commemorate Pierre-Simon Laplace.

The Laplace operator has many functions and is also an important example of an elliptical operator.

In physics, it is often used in the mathematical model of wave equations, the heat conduction equation, and the limhoz equation.

In electrostatic science, applications of Laplace and Poisson equations are everywhere. In quantum mechanics, it represents the kinetic energy term in the schödnex equation.

In mathematics, a function that is computed by the Laplace operator to zero is called a harmonic function. The Laplace operator is the core of the huochi theory and the result of the simultaneous adjustment of diram.

[Edit] Definition

The Laplace operator is a second-order differential operator in the n-dimensional Euclidean space. It is defined as the divergence () of the gradient (). Therefore, if F is a second-order real function, the Laplace operator of F is defined:

(1)

The Laplace operator of F is also all non-mixed second-order partial derivatives in the Cartesian coordinate system XI:

(2)

As a second-order differential operator, the Laplace operator maps the CK function to the Ck-2 function, for k ≥ 2. Expression (1) (or (2) defines an operator delta: CK (RN) → Ck-2 (RN), or, more generally, defines an operator delta: CK (Ω) → Ck-2 (Ω), for any open set Ω.

The Laplace operator of the function is also the trace of the matrix of the function:

Coordinate Representation

Two-Dimensional Space

X and Y represent the Cartesian coordinates on the x-y plane.
In addition, the polar coordinate representation is:

 

 

3D space

Representation in the flute Coordinate System
Representation in a Cylindrical Coordinate System
Representation in the Spherical Coordinate System

Poisson equation solution

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