ESI Group is a world-leading supplier and pioneer of digital simulation software for prototyping and manufacturing processes that take into account the physics of materials. ESI has developed an extensive suite of coherent, industry-oriented applications to realistically simulate a product's behaviour during testing, to fine-tune manufacturing processes in accordance with desired product performance, and to evaluate the environment's impact on product performance. ESI's software product CFD-ACE+ incorporates proper mathematical models for multiphase and heat transfer modelling and numerically solves the coupled equation set using a finite-volume based methodology.

The German ESI GmbH office in Essen is rated as a Centre of Excellence for CFD & Multiphysics modelling inside ESI Group. The team in Essen is a group of simulation specialists and provides technical support and training to CFD-ACE+ customers, conducts customer projects and works on special software developments, for example on improved multiphase modelling capabilities. The office is equipped with extensive hardware resources and training facilities.