![]() ![]() If User defined is selected, select Isotropic, Diagonal, Symmetric, or Anisotropic and enter values or expressions in the field or matrix. If User defined is selected, select Isotropic, Diagonal, Symmetric, or Anisotropic and enter values or expressions in the field or matrix.* If Polarization is selected, enter components (3 in 3D, 2 in 2D) for the Polarization vector P (SI unit: C/m2).* If Remanent displacement is selected, the default is to take the Relative permittivity (er) values From material. Select:- Relative permittivity to use the constitutive relation D = ε0εrE (the default).- Polarization to use the constitutive relation D = ε0E + P.- Remanent displacement to use constitutive relation D = ε0εrE + Dr, where Dr is the remanent displacement (the displacement when no electric field is present).* If Relative permittivity is selected, the default is to take the Relative permittivity (εr) values From material. The Coordinate system list contains any additional coordinate systems that the model includes.ĮLECTRIC FIELDSelect a Constitutive relation to describe the macroscopic properties of the medium (relating the electric displacement D with the electric field E) and the applicable material properties, such as the relative permittivity. By default, this section is empty.COORDINATE SYSTEM SELECTIONThe Global coordinate system is selected by default. ![]() The Charge Conservation page contains these sections for defining the related material properties:To display additional features for the physics interface feature nodes (and the physics interfaces), click the Show button ( ) on the Model Builder and then select the applicable option.ĭOMAIN SELECTIONSelect the domains where you want to define the electric potential and the equation based on Gauss’ law that describes the potential field.MODEL INPUTSThis section contains field variables that appear as model inputs, if the current settings include such model inputs. The Charge Conservation node adds the equations for charge conservation according to Gauss’ law for the electric displacement field. ![]() If User defined is selected, select Isotropic, Diagonal, Symmetric, or * If Relative permittivity is selected, the default is to take the Relative permittivity (ε r ) values From material. Remanent displacement to use constitutive relation D = ε 0 ε r E + D r, where D r is the remanent displacement (the displacement when no electric field is present). Polarization to use the constitutive relation D = ε 0 E + P. Select: - Relative permittivity to use the constitutive relation D = ε 0 ε r E (the default). ELECTRIC FIELD Select a Constitutive relation to describe the macroscopic properties of the medium (relating the electric displacement D with the electric field E ) and the applicable material properties, such as the relative permittivity. The Coordinate system list contains any additional coordinate systems that the model includes. COORDINATE SYSTEM SELECTION The Global coordinate system is selected by default. MODEL INPUTS This section contains field variables that appear as model inputs, if the current settings include such model inputs. DOMAIN SELECTION Select the domains where you want to define the electric potential and the equation based on Gauss’ law that describes the potential field. The Charge Conservation page contains these sections for defining the related material properties: To display additional features for the physics interface feature nodes (and the physics interfaces), click the Show button ( ) on the Model Builder and then select the applicable option. Charge Conservation The Charge Conservation node adds the equations for charge conservation according to Gauss’ law for the electric displacement field. ![]()
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