.. _U4.67.02:

**u4.67.02** Operator DEFI_DOMAINE_REDUIT
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The aim of the operator is to enrich an existing mesh by groups (of meshes or nodes) that define a sub-domain called a reduced integration domain (RID).

The operator relies on one or more sd results of the type mode_empi to determine specific nodes, called interpolation points, by applying the discrete empirical interpolation method (DEIM). The reduced integration domain is the set of cells positioned in the vicinity of these interpolation points.

The operator enriches the sd mesh by creating two groups:


* a group of elements corresponding to the reduced domain;


* a group of nodes corresponding to the interface between the reduced domain and the rest of the initial domain.




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    Syntaxe
    Op_randes