11th April 2007

STRONG PRELIMINARY AGENDA ANNOUNCED FOR THE FIRST ‘INTERNATIONAL AEROSPACE CFD CONFERENCE’ (IACC), 18 – 19 JUNE, PARIS, FRANCE

ANSYS Inc. (Nasdaq: ANSS), a global innovator of simulation software and technologies designed to optimize product development processes, today announced a strong preliminary agenda (see link below) for the first ‘International Aerospace CFD Conference’ (IACC), to be held on 18 – 19 June in Paris. The list of presentations from across Europe, North and South America, Asia and Africa, highlights the status of the IACC as one of the largest forums worldwide for the aerospace and defense CFD community.

An unprecedented number and breadth of papers, covering aerospace and marine applications in the commercial and defense sectors, is planned with over 50 presentations including five plenary sessions and 10 subject areas: aerodynamics; cryogenics; installations; missiles; multiphysics; naval; nozzles; optimization, coupling and automation; preprocessing and visualisation; turbomachinery. Some of the biggest companies in aerospace and defense will be sharing their knowledge and expertise including General Electric Aviation, USA; Qinetiq, UK; the Ministry of Defence, India; Pratt and Whitney, Canada; EADS Airbus, Germany; SINMEC, Brazil; CNES, France; Honeywell, USA; INTA, Spain; L’Air Liquide, France; Alenia Spazio, Italy; Siemens Power Generation, USA; Politecnico di Milano and Aermacchi, Italy; and the French and US Navies.

In addition to the presentations, a Round Table Panel Discussion is being planned with industry experts, to discuss the revolutionary impact on aerospace CFD of high performance computing. An accompanying partner exhibition and an evening social occasion on the 18th all adds up to what promises to be a seminal event for aerospace CFD that should not be missed, offering an unmatched opportunity to network with your industry peers and share information and ideas. Register before the end of April to get an Early Bird discount.

The IACC is timed and located conveniently at the Congress Centre of La Villette, Paris, to fit the schedule of those wishing to attend the nearby Paris Air Show at the Le Bourget Exhibition Centre.

For more information and to secure your place, please visit: www.fluent.com/events/iacc or www.iacc.ansys.com, or contact Vincent Canu at: iacc@fluent.com

-ends-

For further general information, contact: Leigh Bramall ANSYS Fluent 0044 (0)114 281 8888 leigh@fluent.co.uk www.iacc.ansys.com

About ANSYS, Inc. ANSYS, Inc., founded in 1970, develops and globally markets engineering simulation software and technologies widely used by engineers and designers across a broad spectrum of industries. The Company focuses on the development of open and flexible solutions that enable users to analyse designs directly on the desktop, providing a common platform for fast, efficient and cost- conscious product development, from design concept to final-stage testing and validation. The Company and its global network of channel partners provide sales, support and training for customers. Headquartered in Canonsburg, Pennsylvania, U.S.A., with more than 40 strategic sales locations throughout the world, ANSYS, Inc. and its subsidiaries employ approximately 1,400 people and distribute ANSYS products through a network of channel partners in over 40 countries. Visit http://www.ansys.com for more information.

ANSYS, ANSYS Workbench, CFX, AUTODYN, FLUENT and any and all ANSYS, Inc. product and service names are registered trademarks or trademarks of ANSYS, Inc. or its subsidiaries located in the United States or other countries. ICEM CFD is a trademark licensed by ANSYS, Inc. All other trademarks or registered trademarks are the property of their respective owners.

About Fluent Inc. Fluent Inc. is a wholly owned subsidiary of ANSYS, Inc., the world's largest provider of computational fluid dynamics (CFD) software and consulting services. Fluent software is used for simulation, visualization and prediction of fluid flow, heat and mass transfer and chemical reactions. It is a vital part of the computer-aided engineering (CAE) process for companies around the world and is deployed in nearly every manufacturing industry. Using Fluent software, product development, design and research engineers build virtual prototypes and simulate the performance of proposed and existing designs, allowing them to improve design quality while reducing cost and speeding time to market.