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| NASA Tech Briefs Opens Software Center |
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Posted Wed June 12, 2002 @06:11PM
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Daat Research Corp. has added multiple processor capabilities to boost the calculating speed of its CFD thermal and flow analysis software, Coolit.
When installed into a multiple processor system, Coolit automatically recognizes the number of processors and parallelizes the computation accordingly. The result is a significant speed increase that ranges from a minimum of 1.5 times to almost double for dual processors. For more processors, speed gains are even greater.
This latest Coolit release, version 4.50, also incorporates numerous new features that aid the model building process and increase modeling accuracy. Most significant is the addition of new shapes to the component library. Tetrahedron, pyramid and spherical cap components join the previously released triangular prism components to make possible more complex shapes and more accurate geometries.
Other changes in the new release included greater editing flexibility, a wider range of component characteristics, and customizable projections in panel views. Coolit v.4.50 also implements a new advanced model for porous media. The new model is a significant improvement over the standard Brinkman model, which is used in most commercial CFD programs.
Coolit v.4.50 operates on all Windows-based platforms: Windows 95,98,2000,XP and NT. More information on Daat and Coolit can be found on the Daat web site.
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Posted Tue June 11, 2002 @05:17PM
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In a first for the product design industry, PTC announced its intention to support the Linux operating system for Pro/ENGINEER®. Pro/ENGINEER, PTC's flagship mechanical computer aided design (MCAD) application, gives users the power to create advanced, high-quality product models and designs that result in superior products. With the release of a Linux supported Pro/ENGINEER, PTC plans to accommodate the growing demand from top design engineers to support the Linux open-source operating system.
PTC also announced its intention to align with the Hewlett-Packard Company as the Linux partner for PTC's Pro/ENGINEER. Working with HP, PTC intends to support two popular Linux distributions, including Red Hat, on the full range of 32-bit Intel-based architecture workstations available from HP with the release of Pro/ENGINEER Wildfire later this year.
Now that there is reliable 3D OpenGL graphics hardware for Linux (thanks to NVIDIA), many more interactive engineering programs will be finding their way to Linux.
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| FLUENT Software Meets JSAE Benchmark |
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Posted Mon June 10, 2002 @04:51PM
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Earlier this year, the Japan Society of Automotive Engineers (JSAE) invited the major CFD software vendors who serve Japan's automotive industry to take part in a benchmarking exercise which tested CFD predictions on six classical automotive problems. Fluent Asia Pacific, Tokyo, Japan, using the worldwide company's flagship product, FLUENT, was one of the few companies to successfully complete all of the challenge problems with a high score.
The test cases included:
External aerodynamics
HVAC climate control in an automobile cabin
Static port modeling for internal combustion engine analysis
HVAC defrosting of an automobile windscreen
Automatic meshing capabilities
Visualization capabilities
Although Fluent has numerous turbulence models and wall functions, the rules of the competition specified that participants use the default turbulence model without modifying any of the turbulence model constants. Fluent employed the realizable k-epsilon model throughout. Participants were, however, allowed some flexibility over the mesh design. A tetra mesh with a hybrid prism near the surface proved to be most popular.
In addition to checking the accuracy of the solutions against experimental data, the calculation speed and memory requirements were also taken into consideration. In all these important areas, FLUENT performed well. A full description of the results is available from the Japanese Society of Automotive Engineers.
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Posted Fri June 07, 2002 @05:53PM
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Fuel-Tech N.V., a world leader in air pollution control technology and advanced engineering solutions for energy systems, today announced the launch of Virtual Vantage™ 3.0 software, a state-of-the art virtual reality-based product used for the visualization of computational fluid dynamics (CFD) datasets in a 3D, interactive, immersive environment.
The Company’s proprietary Virtual Vantage technology which is based upon internally developed software for the visualization of complex CFD modeling results, provides users with high-end visualization services. This technology is a cost-effective and easy to use software tool that stimulates problem solving in a visual environment, accelerating design decisions and helping users to enhance their time to market.
Virtual Vantage 3.0 software is being introduced at the 2002 Fluent Users’ Group Meeting in Lebanon, New Hampshire on June 10-12. Through a strategic partnership, Fluent provides Fuel Tech with marketing support for its Virtual Vantage technology.
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Posted Thu June 06, 2002 @03:08PM
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For limited time, you can receive the 3-D Navier-Stokes solver PAB3D limited edition free of charge. The limited edition will have all the options except it will limit the problem size to 500,000 grid points and the number of distributed computers to 4.
The PAB3D code, which was developed at NASA Langley Research Center,
solves the three-dimensional Reynolds-averaged Navier-Stokes equations with a finite-volume formulation on structured multi-block grids. The flow solver has a robust (production quality) two-equation k-epsilon turbulence models with anisotropic algebraic Reynolds stress models. PAB3D also has the capability of modeling standard air real-gas effects. The code is capable of working in multiprocessors and distributed computer systems (CFD on Inexpensive Clustered Computers). This code has been used to simulate complex aerodynamic flow configurations and is currently being used in several national programs.
If you are interested, please fill the download registration form at http://www.eagle.com/demopab3d.html. The PAB3D solver has been tested using several operating systems, such as, LINUX, MAC, WINDOWS, SGI, SUN, and HP.
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