Project Overview

The GENIAL project aims at developing a numerical method and a SW tool to model the current return networks (called ALEEN, ALmost Equipotential Electrical Network) installed aboard composite aircrafts. This tool will be able to:

  • accept geometry and material property input of the ALEEN (including any metallic structural parts of the aircraft) from CAD;
  • accept measured data as partial characterization of ALEEN sub-parts;
  • evaluate the ALEEN impedance matrix in the frequency range DC-100 kHz, while also considering the EWIS (Electrical Wiring Interconnection System) and the electromagnetic interaction with aircraft body;
  • interface the above mentioned impedance matrix with an electrical database of EWIS, in order to evaluate the impedance between any two interconnection points of EWIS.

A 3D full-wave procedure will be implemented based on the PEEC (Partial Element Equivalent Circuit) method. A number of improvements with respect to the “standard” PEEC algorithm will be implemented (e.g. non-orthogonal PEEC to avoid the staircase problem; modelling of anisotropic composites; modelling of non-radiating networks; effective skin-effect modelling; Model Order Reduction, MOR). Acceleration methods like MLFMA (Multi-Level Fast Multipole Algorithm) and parallel coding will be applied to allow effective analysis of large structures in a limited amount of time, with currently available HW resources (i.e. no expensive HPC resources required).

The computational module will be integrated, together with pre-processing and post-processing modules, into a SW CAE tool (“ALEEN Modelling Tool”), and will also provide user-friendly working procedures, project management, data storing and data navigation features. A general “client-server” HW configuration will be allowed (with no limitations as to the number of clients and servers), with automatic dispatching procedures for optimal exploitation of the HW resources. The procedure will be validated against experimental data measured on a mock-up.