# Concept of scenario and solving process control

## Introduction

In order to carry out a parametric analysis, it is necessary to define what the values are, which are taken by the various parameters of the parametric analysis, for each of the cases to be treated: air gap values, material magnetic properties values, …

In order to carry out a time dependent study ( transient application ), it is necessary to define the values of the calculus instants.

The definition of the cases to be treated (parametric analysis) or of the computation time steps (time dependent study) is carried out by means of a solving process scenario.

## Concept of scenario and of control

A solving process scenario regroups the following data:

• the name of the I/O parameter(s) to be controlled
• for each I/O parameter, its variation mode (variation interval and values)

## Examples

Scenarios of the I/O (input/output) parameters control, corresponding to the previously quoted examples (see § Parametric analysis: examples ) are presented in the tables below.

Parametric analysis Scenario to control the solving process
Controlled parameter Example of control
(1) geometric airgap

Variation interval: 0.7, 1.3

Step value: 0.2 mm

(2) physical mur

Variation interval: 100, 4000

List of steps: 1000

Parametric analysis Scenario to control the solving process
Controlled parameter Example of control
(3) time dependent study (transient application) time

Variation interval: 0, 0.04

Step value: 0.005 s