Physical Models Overview¶

MKF implements multiple scientific models for electromagnetic calculations. Each phenomenon has several competing implementations, allowing you to choose the most appropriate model for your application.

Model Selection Philosophy¶

MKF follows a multi-model approach:

Multiple implementations for each physical phenomenon
Documented accuracy through error metrics from validation tests
Scientific references linking to original papers
Default recommendations based on comprehensive testing

Available Physical Models¶

Category	Models	Default
Core Losses	Steinmetz, iGSE, MSE, NSE, Roshen, Albach, Barg, Proprietary	iGSE
Reluctance	Zhang, Muehlethaler, Partridge, Stenglein, Balakrishnan, Classic	Zhang
Thermal	Kazimierczuk, Maniktala, TDK, Dixon, Amidon	Maniktala

Category	Models	Default
Skin Effect	Dowell, Wojda, Albach, Payne, Kutkut, Ferreira	Wire-dependent
Proximity Effect	Rossmanith, Wang, Ferreira, Lammeraner, Albach, Dowell	Wire-dependent

Field Models¶

Category	Models	Default
Magnetic Field	Binns-Lawrenson, Lammeraner, Dowell, Wang, Albach	Binns-Lawrenson
Fringing Field	Roshen, Albach	Roshen

Other Models¶

Category	Models	Default
Capacitance	Koch, Albach, Duerdoth, Massarini	Albach
Inductance	Based on reluctance model	-

Using Models Programmatically¶

Factory Pattern¶

All models use a factory pattern for instantiation:

// Create a specific model
auto model = OpenMagnetics::ReluctanceModel::factory(
    OpenMagnetics::ReluctanceModels::ZHANG
);

// Or use default settings
auto model = OpenMagnetics::ReluctanceModel::factory();

Querying Model Information¶

Each model class provides static methods for introspection:

// Get descriptions of all reluctance models
auto info = OpenMagnetics::ReluctanceModel::get_models_information();
for (const auto& [name, description] : info) {
    std::cout << name << ": " << description << std::endl;
}

// Get error metrics
auto errors = OpenMagnetics::ReluctanceModel::get_models_errors();

// Get external references (papers, books)
auto links = OpenMagnetics::ReluctanceModel::get_models_external_links();

Configuring Default Models¶

Use the Settings singleton to configure defaults:

auto& settings = OpenMagnetics::Settings::GetInstance();

// Set default reluctance model
settings.set_reluctance_model(OpenMagnetics::ReluctanceModels::MUEHLETHALER);

// Set default skin effect model
settings.set_winding_skin_effect_losses_model(
    OpenMagnetics::WindingSkinEffectLossesModels::ALBACH
);

Model Accuracy¶

Each model page includes:

Mean error: Average deviation from measured values
Standard deviation: Variability of predictions
Validation dataset: Description of test conditions

Error metrics are computed against published experimental data and internal test suites.

Adding Custom Models¶

MKF's model architecture supports extension. To add a custom model:

Inherit from the appropriate base class (e.g., ReluctanceModel)
Implement the required virtual methods
Register in the factory function

See the source code for examples of model implementations.