Gravity models

The gravity model is responsible for describing the magnitude and direction of the gravity vector at each point inside the domain. To implement a new gravity model, you need to overload the aspect::GravityModel::Interface class and use the ASPECT_REGISTER_GRAVITY_MODEL macro to register your new class. The implementation of the new class should be in namespace aspect::GravityModel.

The functions you need to overload are extensively discussed in the documentation of this interface class at aspect::GravityModel::Interface.