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Feature: Report on the 10th International Meshing Roundtable
Posted Fri October 26, 2001 @02:51PM
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Grid Generation John Chawner of the International Meshing Roundtable Steering Committee has been kind enough to provide us with a report of the recent gathering in Newport Beach, California.
This year's roundtable featured five short courses, thirty-six technical papers (including the keynote and three invited talks), and the crowd pleasing Poster (from which the annual "Meshing Maestro" is chosen), Birds of a Feather, and Panel sessions.
Jump over to the features section for this and other interesting articles.

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CFX Northern European Users Conference
Posted Fri October 26, 2001 @08:54AM
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News AEA Technology will hold an event for their northern European customers on 12-13 November 2001 at Birmingham, UK. All CFX users are welcome to attend.

The meeting will focus on user modelling experiences, best-practice use of CFD by industry experts, and future CFX software development plans.

The event will consist of plenary sessions covering

  • Product development plans
  • Turbulence modeling
  • Geometry and Meshing
and application and industry-specific parallel sessions covering
  • Turbomachinery
  • HVAC / Fire & Safety / Environment
  • Multiphase Flows & Mixing
  • Reacting Flows
There will also be demonstrations of the latest CFX software, including CFX-5.5.

For further information please contact Lin Hall at

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Application: Design of Electronics Cooling with CFD
Posted Thu October 25, 2001 @06:24PM
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Application High powered electronic equipment generates a considerable amount of heat - often in very confined enclosures. Furthermore, electronic equipment has narrow thermal operating conditions. This is why thermal control has always played an important role in the design of electronics which must be extremely reliable, such as on board aircraft.

Complicating the design of airborne electronics is the fact that the environment is harsh with ambient air temperatures ranging from -55 to 100 C or more, and weight and volume constraints demand a compact design.

Natural convection alone is not sufficient to keep airborne electronics at reasonable temperature levels, therefore, designers have turned to forced convection. On board advanced aircraft, such as fighters, an environment control system is used to supply cool air to the electronic equipment. This type of cooling creates problems due to pollutants (dust, sand, metals, liquid droplets) in the flow which can cause micro electronic shorts and/or abraid the electronic surface.

To solve the problem, engineers have turned to passing the cooling flow over fins. The only accurate way of predicting pressure drops and temperatures is to perform a CFD analysis. The simulation yields cooling performance and pressure drops for aid in fan selection. The CFD results can also be used as input to a detailed thermal analysis of the circuit board.

Through the use of CFD, advanced designs of airborne electronics are made possible.

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10th European STAR-CD User Group Meeting
Posted Wed October 24, 2001 @01:59PM
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News The CD adapco Group will hold the 10th European STAR-CD User Group Meeting on November 19-20 at London, U.K. The meeting will include:
  • The opportunity to meet employees of the CD adapco Group and fellow users
  • Presentations about new features of STAR-CD
  • Presentations on a variety of STAR-CD applications given by users from across all industries
  • An exhibition by our hardware and software partners
  • Evening entertainment

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CFX Announces New Release
Posted Mon October 22, 2001 @05:44PM
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News AEA Technology has announced the release of CFX-5.5, the latest addition to their CFD product line.

CFX-5.5 offers a number of improvements over previous versions including:

  • Improved meshing with proximity detection and general interface support
  • Improved multiphase modeling
  • Free surface modeling
  • Single and multiple step chemical reaction models
  • Multiple frame of reference modeling
  • Advanced turbulence modeling including a Shear Stress Transport (SST) model
  • A new post-processor featuring a scripting language
CFX-5.5 combines the world-class meshing and solver technology of earlier CFX-5 releases with new physical modeling, meshing and post-processing tools that make it possible to apply the most powerful and precise CFD technology to a very broad range of problems. -- Chris Reid, President and Chief Executive Officer of CFX
For more information, contact:
Gillian Rowe
AEA Technology
The Gemini Building, Fermi Avenue
Harwell International Business Centre
OX11 0QR
Tel: 01235 448035
Fax:. 01235 448001

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Application: CFD for Ship and Yacht Design
Posted Fri October 19, 2001 @04:48PM
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Application Ship and yacht designers are increasingly turning to CFD to help in the design of hulls and propellers. Recent advances in fluid modeling allow designers to tackle tough problems such as wake prediction, propeller-hull interaction, and acoustics. Military applications include reducing acoustic and non-acoustic signatures (such as the wake field observed by synthetic aperture radar).
The naval and commercial ship design communities have long needed a predictive capability to address the complex interaction between a ship's boundary layer, the nonlinear free-surface, and the propulsor. In commercial ship design, the prediction of near-field flows is central to the problems of unsteady propeller loads, cavitation, and propeller-induced hull vibrations. The solution to these problems requires detailed knowledge of the turbulent stern flow (including thick and perhaps separated boundary layers), bilge vorticity, and propeller/hull interaction.

Another interesting application is the prediction of ship hydrodynamic response, how the ship pitches and rolls, in heavy seas.

There are several CFD codes available which are tailored for hydraulic analysis.

The use of CFD in the ship building industry has been spured by the expense and time-consuming nature of hydrodynamic tank testing.

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