CFD package aims to model modern engine designs

A CD-adapco product story
Edited by the Engineeringtalk editorial team Dec 21, 2004

The latest release of Star-CD is packed full of new features aimed directly at the engine modelling community.

CD-Adapco announces the latest release of its world leading computational fluid dynamics (CFD) code, Star-CD v3.24 which is packed full of new features aimed directly at the engine modelling community.

The eagerly anticipated Extended Coherent Flame Model combustion models (ECFM and ECFM-3Z) extend CFD combustion modelling beyond the usual single mixture regime restriction of traditional combustion models.

The ECFM models are equally valid whether the charge is "pre-mixed", "partially mixed" or "non-mixed" or any combination of these.

Jointly developed by Renault and IFP (Institut Francais du Petrole), the ECFM models are intended to address the specific combustion challenges posed by direct injection (DI) engines.

Unlike traditional port fuel injection (PFI) engines DI engines are characterised by a high degree of charge stratification.

Standard models (such as the original CFM model), which require a homogeneous charge, are therefore not easily applied to DI engines.

The ECFM models are not subject to this restriction and are valid in all mixture regimes, from very lean through to very rich.

The models are equally applicable for GDI engines (using a spark ignition model) and for HCCI and DI diesel engines (using an auto-ignition model).

The long-standing relationship between CD-Adapco and Gamma Technologies continues with the release of an upgraded interface between Star-CD and GT-Suite (GT-Power, GT-Cool, GT-Fuel).

Timed to coincide with the release of GT-Suite V6.1, the new interface takes full advantage of the new features in both codes.

Star and GT-Suite can be distributed across a network, communicating via the GT-Link server.

The link is fully compatible with HPC analyses and there are no constraints on domain decomposition A new interface between Star-CD and Ricardo's Wave code is also supported.

By coupling Wave and Star-CD, engineers can optimise the focus of their system simulations, applying Star-CD to the components where detailed three-dimensional analysis is required, and Wave to the remainder.

Steve MacDonald, President of CD-Adapco comments: "With Star-CD's advanced engine modelling capabilities, our clients' development cycles will be significantly decreased by achieving more iterations with more performing simulation models and a reduced number of physical tests".

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