A 3-D chimera grid embedding technique

TLDR

The paper introduces a three‑dimensional chimera grid‑embedding technique. The method partitions the physical domain into regions with simple grids, links them by interpolating variables at boundaries, and builds a composite mesh with associated data structures. This technique simplifies grid construction for complex geometries and is validated by solving Euler equations for transonic flow around wing‑body and multi‑body configurations.

Abstract

A three-dimensional (3-D) chimera grid-embedding technique is described. The technique simplifies the construction of computational grids about complex geometries. The method subdivides the physical domain into regions which can accommodate easily generated grids. Communication among the grids is accomplished by interpolation of the dependent variables at grid boundaries. The procedures for constructing the composite mesh and the associated data structures are described. The method is demonstrated by solution of the Euler equations for the transonic flow about a wing/body, wing/body/tail, and a configuration of three ellipsoidal bodies.