# Definition of regions for an incomplete computation

## Introduction

The simplified or incomplete computation is a computation carried out under the following conditions:

- the computation is accomplished without taking into account of the current density in the structure
- the structure introduced in the electrolyte is represented by means of boundary conditions

## Volume region

Volume regions are gathered in the table below.

A volume region… |
is a material region which enables the modeling… |
---|---|

electrolytic conducting | of a conducting medium (resistivity ρ) |

inactive | of an insulating medium |

## Face region

Face regions are gathered in the table below.

A face region… | is a BC that enables one to impose… |
---|---|

electrochemical interface |
conditions at the interface “electrolyte – cathode” by the intermediate of a polarization law |

imposed potential |
a potential (varying formula / spatial formula) (sacrificial anode) |

imposed normal current density |
a normal current density* (varying formula / spatial formula) (active anode) |

## Line region

Line regions are gathered in the table below.

A line region … | is a BC that enables one to impose … |
---|---|

imposed potential |
a potential (varying formula / spatial formula) (sacrificial anode) |

imposed normal current density |
a radial current density* (varying formula / spatial formula) (active anode) |

## Point region

Point regions are gathered in the table below.

A point region… | is a BC that enables one to impose… |
---|---|

imposed potential | a potential in a point |